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Instruction Manual 760A/760D/760N Stereo Audio Monitors (760A S/N B050000 & Above) (760D/760N S/N B030000 & Above) 070-5992-05 Warning The servicing instructions are for use by qualified personnel only. To avoid personal injury, do not perform any servicing unless you are qualified to do so. Refer to all safety summaries prior to performing service. Please check for change information at the rear of this manual. Copyright © Tektronix, Inc. All rights reserved. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved. Printed in the U.S.A. Tektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000 TEKTRONIX and TEK are registered trademarks of Tektronix, Inc. WARRANTY Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product. In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix, with shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations. This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting from attempts by personnel other than Tektronix representatives to install, repair or service the product; b) to repair damage resulting from improper use or connection to incompatible equipment; c) to repair any damage or malfunction caused by the use of non-Tektronix supplies; or d) to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product. THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY OTHER WARRANTIES, EXPRESSED OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. Table of Contents List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Service Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv v vii ix xi Introduction and Specifications Section 1 Introduction and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 1–1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CRT Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bar Graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dynamic response characteristics for peak program meters . . . . . . . . . . . . Return Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1 1–1 1–1 1–2 1–2 1–3 1–3 1–3 1–4 Section 2 Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Front–Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rear–Panel Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CRT Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Display Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Graticule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LED BARS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Using The 760A / 760D / 760N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Initial Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Level Setups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . System Phase Error Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Energy Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Monaural Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Polarity Reversal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clipping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1 2–1 2–2 2–3 2–3 2–4 2–5 2–6 2–6 2–7 2–7 2–8 2–9 2–9 2–10 Section 3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1 Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mains Frequency and Voltage Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Changing Input Sensitivity (Standard 760A only) . . . . . . . . . . . . . . . . . . . . User–Definable Input Sensitivity (Standard 760A only) . . . . . . . . . . . . . . . Changing Input Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Changing Display Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1 3–1 3–1 3–1 3–2 3–2 3–2 Operating Instructions Installation 760A / 760D / 760N i Contents Maintenance Section 4 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Visual Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Static–Sensitive Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Performance Checks and Readjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . Corrective Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . How To Use This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Obtaining Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Troubleshooting Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DAC Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PAL Signal Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Supply Troubleshooting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Low Volts Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . High Volts Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical Disassembly And Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bezel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Graticule Light Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . CRT Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CRT Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rear Panel Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Front Panel Assembly Removal and Replacement . . . . . . . . . . . . . . . . . . . . LED Bar and Socket Removal and Replacement . . . . . . . . . . . . . . . . . . . . . Main Board Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Supply Board Removal and Replacement . . . . . . . . . . . . . . . . . . . . . Repackaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1 4–1 4–1 4–2 4–2 4–2 4–2 4–2 4–5 4–5 4–5 4–6 4–7 4–7 4–8 4–10 4–13 4–13 4–14 4–14 4–14 4–15 4–15 4–16 4–16 4–17 4–17 Performance Check and Calibration Section 5 Performance Check and Calibration Procedures . . . . . . . . . . . . 5–1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Required Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Performance Check Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–1 5–1 5–2 5–11 Section 6 Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Detailed Circuit Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INPUT AMPLIFIERS <1> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MATRIX & AGC CONTROL LOGIC <4> . . . . . . . . . . . . . . . . . . . . . . . . AGC & CRT DEFLECTION AMPLIFIERS <5> . . . . . . . . . . . . . . . . . . . . LEVEL INDICATORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GRAPH DRIVERS <2> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dynamic Response Control (Left) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Signal Peak Processor (Left) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bar Anode Driver (Left) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Peak Hold On/Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BAR SCANNER/DRIVER & DAC <3> . . . . . . . . . . . . . . . . . . . . . . . . . . . Master Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Down Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scale Shaper Lookup Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–1 6–1 6–1 6–1 6–2 6–3 6–3 6–4 6–4 6–4 6–5 6–5 6–6 6–6 6–6 6–6 Theory of Operation ii 760A / 760D / 760N Contents DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LOW VOLTAGE POWER SUPPLY <6> . . . . . . . . . . . . . . . . . . . . . . . . . . Line Rectifier and Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pulse Width Modulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Error Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Feedback Transformer Driver and Peak Detector . . . . . . . . . . . . . . . . . Output Under-Voltage Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HIGH VOLTAGE POWER SUPPLY <7> . . . . . . . . . . . . . . . . . . . . . . . . . . HV Osc and Error Amp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Supply Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Focus Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Grid Drive Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Z-Axis Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CRT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–6 6–6 6–7 6–7 6–8 6–8 6–8 6–8 6–9 6–9 6–10 6–10 6–10 6–10 6–11 Options Section 7 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–1 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–1 Replaceable Electrical Parts Section 8 Replaceable Electrical Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Parts Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Using the Replaceable Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Column Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cross Index – Mfr. Code Number To Manufacturer . . . . . . . . . . . . . . . . . . . . . . Replaceable Electrical Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8–1 8–1 8–1 8–2 8–3 8–6 Diagrams and Circuit Board Illustrations Section 9 Diagrams/Circuit Board Illustrations . . . . . . . . . . . . . . . . . . . . . . 9–1 Replaceable Mechanical Parts Section 10 Replaceable Mechanical Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . Parts Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Using the Replaceable Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . Column Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cross Index–Mfr. Code Number to Manufacturer . . . . . . . . . . . . . . . . . . . . . . . . 760A / 760D / 760N 10–1 10–1 10–1 10–2 10–3 iii Contents List of Figures iv Figure 1–1: LED Bar Graph scales for the 760A, 760D, and 760N . . . . . 1–1 Figure 2–1: 760A Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2–2: 760A Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2–3: 760A Sound Stage Graticule . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2–4: 760A X–Y Graticule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2–5: Ellipse with approximately 13° phase error . . . . . . . . . . . . . Figure 2–6: Strong left content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2–7: Well balanced stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2–8: Stereo unsuited to monaural reception . . . . . . . . . . . . . . . . . . Figure 2–9: Severe clipping of stereo signal . . . . . . . . . . . . . . . . . . . . . . . 2–2 2–3 2–4 2–4 2–8 2–8 2–9 2–9 2–10 Figure 3–1: 760A / 760D / 760N jumper locations . . . . . . . . . . . . . . . . . . 3–3 Figure 4–1: Using the foldout pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 4–2: Circuit board locations in the 760A/760D/760N . . . . . . . . . . Figure 4–3: Bezel removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 4–4: Retaining screw locations . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 4–5: Repackaging the 760A/760D/760N . . . . . . . . . . . . . . . . . . . . 4–3 4–4 4–13 4–17 4–18 Figure 5–1: Jumper and adjustment locations on the A3 Main board . . . . Figure 5–2: 760–Series adjustment locations . . . . . . . . . . . . . . . . . . . . . . 5–2 5–12 Figure 6–1: 760A / 760D / 760N Block Diagram . . . . . . . . . . . . . . . . . . . Figure 6–2: Simplified Level Indicator block diagram . . . . . . . . . . . . . . . Figure 6–3: Pinout of the CRT Socket . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–2 6–4 6–11 760A / 760D / 760N Contents List of Tables 760A / 760D / 760N Table 1–1: Response Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 1–2: Return Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 1–3: Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 1–4: Environmental Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 1–5: Physical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 1–6: Certifications and Compliances . . . . . . . . . . . . . . . . . . . . . . . 1–3 1–3 1–4 1–6 1–6 1–6 Table 2–1: Front-Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1 Table 3–1: Factory Set Input Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . 3–1 Table 4–1: Power Supply Fault Symptoms . . . . . . . . . . . . . . . . . . . . . . . Table 4–2: Low Volts Supply Voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 4–3: Control Circuit Test Points . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 4–4: High Volts Supply Fault Symptoms . . . . . . . . . . . . . . . . . . . . Table 4–5: High Voltage Oscillator Test Points . . . . . . . . . . . . . . . . . . . . 4–8 4–8 4–10 4–11 4–12 Table 5–1: Verifying Input Sensitivity (760A only) . . . . . . . . . . . . . . . . . Table 5–2: LED Bar Gain Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 5–3: LED Bar Reference Adjustment . . . . . . . . . . . . . . . . . . . . . . . 5–5 5–15 5–15 Table 7–1: Power Cord Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–1 v Contents vi 760A / 760D / 760N General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. To avoid potential hazards, use this product only as specified. Only qualified personnel should perform service procedures. To Avoid Fire or Personal Injury Use Proper Power Cord. Use only the power cord specified for this product and certified for the country of use. Ground the Product. This product is grounded through the grounding conductor of the power cord. To avoid electric shock, the grounding conductor must be connected to earth ground. Before making connections to the input or output terminals of the product, ensure that the product is properly grounded. Do Not Operate Without Covers. Do not operate this product with covers or panels removed. Use Proper Fuse. Use only the fuse type and rating specified for this product. Avoid Exposed Circuitry. Do not touch exposed connections and components when power is present. Do Not Operate With Suspected Failures. If you suspect there is damage to this product, have it inspected by qualified service personnel. Do Not Operate in Wet/Damp Conditions. Do Not Operate in an Explosive Atmosphere. Keep Product Surfaces Clean and Dry. Provide Proper Ventilation. Refer to the manual’s installation instructions for details on installing the product so it has proper ventilation. Symbols and Terms Terms in this Manual. These terms may appear in this manual: WARNING. Warning statements identify conditions or practices that could result in injury or loss of life. CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property. Terms on the Product. These terms may appear on the product: 760A / 760D / 760N vii General Safety Summary DANGER indicates an injury hazard immediately accessible as you read the marking. WARNING indicates an injury hazard not immediately accessible as you read the marking. CAUTION indicates a hazard to property including the product. Symbols on the Product. The following symbols may appear on the product: CAUTION Refer to Manual viii WARNING High Voltage Double Insulated Protective Ground (Earth) Terminal 760A / 760D / 760N Service Safety Summary Only qualified personnel should perform service procedures. Read this Service Safety Summary and the General Safety Summary before performing any service procedures. Do Not Service Alone. Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation is present. Disconnect Power. To avoid electric shock, disconnect the mains power by means of the power cord or, if provided, the power switch. Use Caution When Servicing the CRT. To avoid electric shock or injury, use extreme caution when handling the CRT. Only qualified personnel familiar with CRT servicing procedures and precautions should remove or install the CRT. CRTs retain hazardous voltages for long periods of time after power is turned off. Before attempting any servicing, discharge the CRT by shorting the anode to chassis ground. When discharging the CRT, connect the discharge path to ground and then the anode. Rough handling may cause the CRT to implode. Do not nick or scratch the glass or subject it to undue pressure when removing or installing it. When handling the CRT, wear safety goggles and heavy gloves for protection. Use Care When Servicing With Power On. Dangerous voltages or currents may exist in this product. Disconnect power, remove battery (if applicable), and disconnect test leads before removing protective panels, soldering, or replacing components. To avoid electric shock, do not touch exposed connections. X-Radiation. To avoid x-radiation exposure, do not modify or otherwise alter the high-voltage circuitry or the CRT enclosure. X-ray emissions generated within this product have been sufficiently shielded. 760A / 760D / 760N ix Service Safety Summary x 760A / 760D / 760N Preface This manual documents the TEKTRONIX 760A/760D/760N Stereo Audio Monitor and is intended for instrument operators and service technicians. Operatorsare assumed to be familiar with basic television terms and measurements. Qualified service technicians are also assumed to be familiar with television terms and measurements, and have moderate experience with analog and logic circuits. The manual is divided into two parts: Operator’s Information and Service Information. The Operators information is useful to both operators and service technicians. The Service Information is intended only for qualified service technichians. Features Operators Part The Operators part includes Sections 1 and 2. Section 1, Introduction and Specification, includes a general description of the instrument, followed by the Specifications. The Specifications include references to the corresponding Performance Check steps. Section 2, Operating Instructions, familiarizes the user with the front– and rear–panel controls, connectors, and indicators; includes operator familiarization information. Service Part The Servfice part contains information required by service technicians to install, calibrate, maintain, and troubleshoot the instrument. This is included in the remaining sections of the manual. Section 3, Installation, includes electrical and mechanical installation information. The electrical installation information includes operational changes available within the instrument. Section 4, Maintenance, includes preventive troubleshooting and corrective information. Section 5 Performance Check and Calibration Procedures, includes information to verify and restore the instrument to meet its specifications. The procedures are preceded by list of recommended test equipment. 760A / 760D / 760N xi Preface Section 6, Theory of Operation, provides an overall block diagram and detailed circuit descriptions. The detailed circuit descriptions should be used with the block diagram and schematic diagrams in the foldout pages for specific information about the individual circuits. Section 7, Options, documents available instrument options. Section 8, Replaceable Electrical Parts List, includes order information and part numbers for all rep,aceable electrical parts. Section 9, Diagrams, contains servicing illustrations. These include adjsutment locations, circuit board part locations, a block diagram, schematic diagrams, and waveforms. Parts locating tables are included that cross–reference the circuit board illustrations and the schematic diagrams. Section 10, Replaceable Mechanical Parts List, includes ordering information and part numbers for all replaceable mechanical aprts. This parts list is referenced to an exploded view mechanical drawing. Also included are lists of standard and optional accessories. Contacting Tektronix Product Support For application-oriented questions about a Tektronix measurement product, call toll free in North America: 1-800-TEK-WIDE (1-800-835-9433 ext. 2400) 6:00 a.m. – 5:00 p.m. Pacific time Or contact us by e-mail: [email protected] For product support outside of North America, contact your local Tektronix distributor or sales office. Service Support Contact your local Tektronix distributor or sales office. Or visit our web site for a listing of worldwide service locations. http://www.tek.com xii For other information In North America: 1-800-TEK-WIDE (1-800-835-9433) An operator will direct your call. To write us Tektronix, Inc. P.O. Box 1000 Wilsonville, OR 97070-1000 760A / 760D / 760N Introduction and Specifications Section 1 Introduction and Specifications Introduction The 760A Stereo Audio Monitor is a simple yet accurate tool that the audio engineer can use to perform setup, monitoring, measuring, and troubleshooting tasks in the studio. There are two special versions of the 760A Stereo Audio Monitor: the 760D and the 760N. All three operate in exactly the same manner, but are set to use different scales for the Bar Graph displays. The three different scales are shown in Figure 1–1. Features CRT Display The CRT provides a pattern display to monitor stereo separation, monaural phase compatibility, and audio system phase errors. Figure 1–1: LED Bar Graph scales for the 760A, 760D, and 760N 760A / 760D / 760N 1–1 Introduction and Specifications The display is set for a “Sound Stage” orientation when the 760A is shipped from the factory. This provides a display where monaural amplitudes are oriented on the vertical axis of the CRT. An alternate XY graticule is shipped as a standard accessory with the 760A. This graticule can be installed if you are familiar with or desire the display orientation provided by an XY monitor. Instructions for installing the XY graticule are found in SECTION 3 INSTALLATION. Automatic or manual gain control is front panel selectable. This feature allows flexible control of the pattern size over a wide range of input signal amplitudes. In the absence of an input signal, Z–Axis dimming prolongs CRT life. Bar Graph Three 100–segment LED bars indicate the levels of the left stereo channel, right stereo channel and a selectable third channel. The third bar can be set to display the levels of (L+R)/2, (LR)/2, or the rear–panel AUXILIARY input. Both (L+R)/2 and (LR)/2 are internally derived, and represent half the sum or difference of the input voltages ([VLVR] / 2). In this way when the left and right channels are balanced the sum will be displayed at that same level, while the difference will be displayed at “0”. The EXPAND SCALE control is a momentary contact front–panel push button, which greatly improves the accuracy of level setups. Pressing this button switches to the blue expanded scale which allows accurate setting of the signal level for alignment, as specified by broadcast authorities. For the 760A the alignment level is 8 dB. This level is labeled “TEST”, and is indicated by the “arrow head” scale marks. For the 760D the alignment level is –9 dB, indicated by the “arrow head” scale marks. The 760N alignment level is marked “TEST”, and is at 0 dB. In all cases, the normal scale lines up with the expanded scale at the alignment level. The PEAK HOLD control is a latching front–panel push button. Indicated peaks are displayed for approximately three seconds when this function is selected. Dynamic response characteristics for peak program meters The 760A, 760D, and 760N conform to the dynamic response characteristics of: 760A: EBU–3205, IEC 268–10, and IEEE Proposed PPM specification. 760D: DIN 45 406 760N: Nordic Technical Recommendation N9. Table 1–1 shows the peak bar indication when an isolated tone burst of a given duration is applied. The response shown is relative to the indication for a continuous tone of the same amplitude. The burst must contain at least 5 cycles, which requires a frequency of at least 10 kHz for the shortest bursts. 1–2 760A / 760D / 760N Introduction and Specifications Table 1–1: Response Time Inst Tone Burst (mS) Response (dB) 760A 100.0 0 "0.5 10.0 2 "0.5 5.0 4 "0.75 1.5 9 "1.0 0.5 17 "2.0 10.0 1 "0.5 5.0 2 "1.0 3.0 4 "1.0 0.4 15 "2.0 760D 760N Return Time Return Time is the elapsed time for the reading to decay a specified amount after the abrupt removal of a tone. See Table 1–2. Table 1–2: Return Time Inst Return Time 760A 2.8 "0.3 seconds to fall 24 dB 760D 1.5 "0.2 seconds to fall 20 dB 760N 1.7 "0.3 seconds to fall 20 dB Rear Panel The rear–panel AUDIO INPUTs are female XLR connectors with balanced bridging and jumper selectable input sensitivity and termination. Safety Standards This product is designed and tested in accordance with the requirements for industry safety standards. These standards include the following: UL1244, Second Edition –Standard for Electrical and Electronic Measuring and Testing Equipment. ANSI C39.5 –Safety Requirements for Electrical and Electronic Measuring and Controlling Instrumentation, 1984, Draft #11. CSA –Electrical Bulletin No. 556B. IEC-348, Second Edition –Safety Standards For Electronic Measuring Apparatus. VDE 0871.5 (Class B) –Radio Frequency Interference Suppression of Electrical Equipment and Systems. FCC EMI Compatibility –FCC Rules Part 15 Subpart J, Class A. 760A / 760D / 760N 1–3 Introduction and Specifications Specifications The Performance Requirements listed in Table 13 are warranted over an ambient temperature range of 0°C to 50°C only when the 760A has been calibrated at 25°C ±5°C, following a warm–up period of 20 minutes. A Performance Check procedure is provided in SECTION 5, PERFORMANCE CHECK AND CALIBRATION PROCEDURES, to verify the Performance Requirements listed in the following table. Table 1–3: Electrical Characteristics Characteristic Performance Requirement Audio Inputs Balanced Bridging Selectable from >20 kΩ, 600Ω, or 150Ω Protection Will withstand 50 V peak common– mode input, dc to 20kHz, without damage. 1.55 V rms for +0 dB indication. 760N 1.55 V rms for +6 dB indication. (internal jumper) 2 (internal jumper) One user–definable position available, on standard only. 3 4 +8 dB to –20 dB (0 dB bar reference). +5 to –25 dB. +15 to –15 dB. Gain Match and Tracking (over AGC range). "0.3 dB. 5, 6 Phase Match "1° @ 0 dB. 7 Frequency Response "0.5 dB, 20 Hz to 20 kHz throughout AGC Control Range. 8 Z– Axis Dimming With absence of signal. 10 Bar Graph 100 Segment LED 760A 760D 760N 1–4 Gain selectable for 0 dB bar indication for sine waves of 0, +4, +8, +12, and +16 dBu. 760D CRT Display Automatic Gain Control Control Range 760A 760D 760N Perf Check Step No. >10 kΩ/side. Termination Sensitivity 760A Supplemental Information Green to 0 dB, red above. Green to 0 dB, red above. Green to +6 dB, red above. 760A / 760D / 760N Introduction and Specifications Table 1–3: Electrical Characteristics (Cont.) Characteristic Performance Requirement Display Range 760A –Normal –Expanded Supplemental Information +8 dB to –45 dB 5 dB to –11 dB 760D –Normal –Expanded +5 dB to –50 dB –5 dB to –13 dB 760N –Normal –Expanded +15 dB to –36 dB +3 dB to –6 dB Scale 760A 760D 760N dB linear from +8 to 20 dB. Progressively compressed. dB linear from +15 to –24 dB. Resolution 760A 0.4 dB/segment, from +8 to20 dB. 0.04 dB/ segment with EXPAND SCALE depressed. 760D 0.25 dB/segment from 0 to +5 dB, tapering to 2dB/segment from –40 to –50 dB. 0.125 dB/ segment with EXPAND SCALE depressed. 760N 0.5 dB/segment, from +15 to –24 dB. 0.1 dB/ segment with EXPAND SCALE depressed. Accuracy Perf Check Step No. 0.3 dB at 0 dB and 1 kHz 3 Peak Hold Indicated peaks held approximately 3 seconds. Attack/Decay Dynamics Conforms to DIN 45 406. 760N also conforms to Technical Recommendation N9. 9 "0.5 dB, 20 Hz to 20 kHz: +8 to 20 dB +5 to 20 dB +15 to 18 dB 11 Gain Match 0.3 dB. 12 Crosstalk A full–scale indication on any bar causes no indication on any other bars. Frequency Response 760A 760D 760N 760A / 760D / 760N SELECT set to AUX. 13 1–5 Introduction and Specifications Table 1–4: Environmental Limits Characteristic Temperature Stored Operational Humidity Operational Altitude Stored Operational Supplemental Information –55° C to +75° C. 0° C to +50° C. Will operate at 95% relative humidity for up to five days. Do not operate with visible moisture on boards. 50,000 feet. 15,000 feet. Vibration Operational 15 minutes each axis at 0.025 inch,with frequency varied from 10–55–10 Hz in 1 minute cycles with instrument secured to vibration table. 10 minutes each axis at any resonant frequency or at 55 Hz if no resonant frequency is found . Shock Non–Operating 50 g’s ½ sine, 11 ms duration, 3 shocks per surface. Transportation Qualified under NTSB Test Procedure 1–A, Category II (30 inch drop). Table 1–5: Physical Characteristics Characteristic Supplemental Information Height 5.25 inches (13.3 cm). Width 8.424 inches (21.4 cm). Length 16.875 inches (42.9 cm). Weight Approximately 10 pounds. 1–6 760A / 760D / 760N Introduction and Specifications Table 1–6: Certifications and Compliances EC Declaration of Conformity – EMC 1 Meets intent of Directive 89/336/EEC for Electromagnetic Compatibility. Compliance was demonstrated to the following specifications as listed in the Official Journal of the European Communities: EN 50081-1 Emissions: EN 55022 Class B Radiated and Conducted Emissions EN 50082-1 Immunity: IEC 801-2 IEC 801-3 IEC 801-4 Electrostatic Discharge Immunity RF Electromagnetic Field Immunity Electrical Fast Transient/Burst Immunity 1 CSA Certified Power Cords High-quality shielded cables must be used to ensure compliance to the above listed standards. This product complies when installed into any of the following Tektronix instrument enclosures: 1700F00 Standard Cabinet 1700F02 Portable Cabinet 1700F05 Rack Adapter CSA Certification includes the products and power cords appropriate for use in the North America power network. All other power cords supplied are approved for the country of use. Safety Standards U.S. Nationally Recognized Laboratory Listing UL1244 Standard for Electrical and Electronic Measuring and Testing Equipment. Canadian Certification CAN/CSA C22.2 No. 231 CSA Safety Requirements for Electrical and Electronic Measuring and Test Equipment. European Union Compliance Low Voltage Directive 73/23/EEC, Amended by 93/68/EEC. Additional Compliance IEC1010-1 Safety Requirements for Electrical for Measurement, Control, and Laboratory Use. EN61010-1 Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use. Safety Certification Compliance Temperature, operating +5 to +40_ C Altitude (maximum operating) 2000 meters Equipment Type Test and measuring Safety Class Class I (as defined in IEC 1010–1, Annex H) – grounded product Overvoltage Category Overvoltage Category II (as defined in IEC 1010–1, Annex J). Pollution Degree Pollution Degree 2 (as defined in IEC 1010–1). Note: rated for indoor use only. 760A / 760D / 760N 1–7 Introduction and Specifications 1–8 760A / 760D / 760N Operating Instructions Section 2 Operating Instructions Introduction This section of the manual will familiarize you with the 760A Stereo Audio Monitor’s operation. The contents include a brief description of the controls, connectors, displays (including a discussion of the graticules), and the basic uses of the instrument. Front–Panel Controls Table 2–1 contains a brief description of the front–panel control functions. The front panel is shown in Figure 2–1. Table 2–1: Front-Panel Controls Control 760A / 760D / 760N Function Select Rotary switch; selects input to third bar from SUM, DIFF and AUX. Expand Scale Momentary push button; increases sensitivity for precise level set–ups. While holding this button refer to the scale printed in blue. Peak Hold Latching push button; ON when back lit. Display Gain Double detent pot; CW detent is AGC, CCW detent is CAL; MAN GAIN range is between detents. Power Switches instrument power ON and OFF. Focus For optimum display definition. Graticule Varies external graticule illumination. Position (Vert & Horiz) Center the display on the graticule. Intensity Varies intensity of trace. Trace Rot Rotates trace into alignment with graticule lines. 2–1 Operating Instructions GRATICULE INTENSITY POSITION FOCUS VERT HORIZ TRACE ROT Figure 2–1: 760A Front Panel Rear–Panel Connectors The three rear–panel AUDIO INPUTs: LEFT, RIGHT, and AUXILIARY, are balanced bridging male XLR connectors. The connectors are wired as follows: Pin 1: Ground Pin 2: + Pin 3: – The LEFT and RIGHT AUDIO INPUTS are for the left and right channels of your stereo signal. The AUXILIARY input can be used for an externally derived monaural signal or a SAP signal. The rear panel is shown in Figure 2–2. 2–2 760A / 760D / 760N Operating Instructions 760 SERIES 333–3321–02 DIE IN DIESEM GERAT ENTSTEHENDE RONTGENSTRAHLUNG IST AUSREICHEND ABGESCHIRMT BESCHLEUNIGUNGSSPANNUNG KLEINER ALS ACCELERATION VOLTAGE LESS THAN 20kV ÏÏ ÏÏ ÏÏ ÏÏ X–RAY EMISSION GENERATED WITHIN THIS INSTRUMENT HAS BEEN SUFFICIENTLY SHIELDED. SA " # ! ! AUDIO LEFT INPUTS ! RIGHT AUXILIARY FUSE Figure 2–2: 760A Rear Panel CRT Display The CRT display provides visual feedback of the amplitude and relative phasing of the stereo audio signal. With this display, you can determine the fitness of audio signals for monaural or stereo transmission/reception. Audio system phase errors can also be measured on the 760A CRT display. Display Orientation The 760A is shipped from the factory set for “Sound Stage” display orientation. This orientation provides a display where monaural amplitudes are displayed on the vertical axis, and stronger left content in the stereo signal would deflect the signal toward the left 45° axis (“L” line on the Sound Stage graticule). An alternate XY graticule is shipped as a standard accessory with the 760A. This graticule can be installed if you are familiar with or desire the display orientation provided by an XY monitor. Instructions for installing the XY graticule are found in SECTION 3, INSTALLATION. 760A / 760D / 760N 2–3 Operating Instructions Graticule The graticule provides calibrated reference marks for a variety of uses. Both graticule options have the same markings and differ only in their orientation. Figures 2–3 and 2–4 show the Sound Stage and XY graticules. L R L=R AMPLITUDE MARKS PHASE MARKS L= –R PHASE TANGENT LINES Figure 2–3: 760A Sound Stage Graticule L L=R PHASE MARKS AMPLITUDE MARKS R PHASE TANGENT LINES L= –R Figure 2–4: 760A X–Y Graticule 2–4 760A / 760D / 760N Operating Instructions L indicates signal amplitude from the LEFT channel input. R indicates signal amplitude from the RIGHT channel input. L=R indicates monaural amplitudes and “in phase” left and right signal amplitudes. L=–R indicates “out of phase” left and right signals. A pattern display oriented along this line is poorly suited for monaural reception. Phase Marks and Phase Tangent Lines are used in conjunction with one another to make system phase error measurements. This procedure is explained later in this section. All other graticule markings are used for performance verification and adjustments in SECTION 5, PERFORMANCE CHECK AND CALIBRATION. LED BARS The three 100–segment LED bars allow direct readout of the signal levels. Two of the bars are dedicated to the left and right channels, while the third bar can be switched to display L+R (sum), or L–R (difference) of the input voltages, or 2 AUXILIARY2 input. By dividing Left + Right by two, to display the level of the the third bar will read the same as the left and right bars do, when the two channels are of the same phase and amplitude. The standard 760A, the 760D (DIN scale), and the 760N (Nordic scale) employ different scales and resolutions for the LED bars, as described below: 760A The scale is dB linear between +8 and –20dB, with scale marks every 4 dB. Below –20 dB the scale is progressively tapered to –45 dB with marks every 5 dB. Above –20 dB each LED segment represents a 0.4 dB increment. The LED bars are green up to 0 dB, and red above that point. With the EXPAND SCALE button depressed, the scale is expanded by a factor of four, and the resolution is increased to 0.1 dB. The scale range is –5 dB to –11 dB while the EXPAND SCALE button is being held in, as shown by the scale printed in blue. The sensitivity for the standard 760A is jumper selectable (see SECTION 3, INSTALLATION). 760D The 760D uses a DIN scale in accordance with DIN 45 406, with a range of +5 to –50 dB. The scale is progressively compressed from top to bottom, having a resolution of 0.25 dB from +5 to 0 dB, and tapering to 2 dB from –40 to –50 dB. With the EXPAND SCALE button depressed, the resolution is increased to 0.125 dB and the scale range is –5 to –13 dB (shown in blue). The LED bars are green up to 0 dB, and red above that point. A 1.55 V rms sinusoidal input (+6 dBu) produces a reading of 0 dB, and there are arrows which indicate the –9 dB test level. 760A / 760D / 760N 2–5 Operating Instructions 760N The 760N uses a scale in accordance with Technical Recommendation N9 of the Nordic broadcast authorities, with a range of +15 to –36 dB. The scale is dB linear from +15 dB to –24 dB, and is progressively compressed to –36 dB with scale marks at 3 dB intervals. The resolution of this scale is 0.5 dB from +15 to –24 dB. With the EXPAND SCALE button depressed the resolution is increased to 0.1 dB and the scale range is +3 to –6 dB (shown in blue). The LED bars are green up to +6 dB, and red above that point. A 1.55 V rms sinusoidal input (+6 dBu) produces a reading of +6 dB, and there is a TEST mark to indicate the 0 dB test level. This test level corresponds to an input level of 0.775 V rms (0 dBu). Using The 760A / 760D / 760N Once the 760A / 760D / 760N has been properly configured for your application and installed, performing the following initial alignment procedure is necessary prior to any other measurements. All 760A / 760D / 760N front–panel control names are upper case. NOTE. All waveform photographs in this section were taken using the Sound Stage graticule. Remember that your display will be shifted 45° clockwise from the figures in this section if you are using the XY graticule. Initial Alignment 2. Connect power to the 760A / 760D / 760N and set the instrument POWER to ON. 3. With no input to the LEFT or RIGHT AUDIO INPUTs, set the front panel INTENSITY control fully clockwise. 4. Set the VERTICAL and HORIZONTAL POSITION controls so the illuminated dot is centered on the graticule. 5. Connect a sine wave signal between 20 Hz and 15kHz to the LEFT AUDIO INPUT, and set the INTENSITY control to your preference. 6. Set the FOCUS control for the sharpest trace possible. 7. Set the TRACE ROTATION control to overlay the trace on the L graticule line. 2–6 760A / 760D / 760N Operating Instructions Level Setups 760A When a ppm such as the 760A is used in conjunction with vu meters. it is important to consider the difference in dynamic characteristics when aligning system levels. The vu meter is an average reading meter with a relatively long integration time. Its slow response causes it to indicate between 6 and 15 dB below actual audio peaks, depending on program content. The ppm is a quasi–peak meter with a short (but not instantaneous) attack time and very slow decay. It reads much closer to actual audio peaks, within 3 to 6 dB. So when lining up a system with a test tone, the ppm must read lower than the vu meter to make them read the same on program audio. Broadcast authorities have found that 8 dB is a good average difference between peak–to–reading ratio of the ppm and vu meter. Hence, they have specified that a line–up tone reading of 0 vu on the vu meter should read –8 dB on the ppm. With this alignment, both meters will read substantially the same with audio program material, with the ppm giving more reliable control of program peak levels. The input sensitivity of the 760A is set using internal jumpers. See SECTION 3 INSTALLATION for details. 760D The Alignment Signal Level should indicate –9 dB on either the normal (white) or the expanded (blue) scale. The two scales coincide at the –9 dB “arrowhead” marks. Very accurate level settings can be achieved using the blue expanded scale, activated by pressing and holding the EXPAND SCALE button 760N System alignment is done at the 0 dB TEST level. Both the normal (white) and the expanded (blue) scales coincide at the TEST mark. Very accurate level settings can be achieved using the blue expanded scale, activated by pressing and holding the EXPAND SCALE button. System Phase Error Measurements NOTE. Perform the preceding alignment procedure before making any measurements, to ensure accurate results. Phase difference between LEFT and RIGHT sine waves of the same frequency can be measured with the phase marks on the CRT graticule. The signals need not have the same amplitude, though the measurement is easier if they are approximately equal. Adjust the MANual DISPLAY GAIN control to make the edges of the ellipse just touch the Phase Tangent Lines (see Figure 2–3 or 2–4). Read the phase difference where the ellipse crosses the axis with the phase marks. The longer marks represent 10° increments and the shorter ones represent 5°. Figure 2–5 shows a stereo signal with approximately 13° phase error. 760A / 760D / 760N 2–7 Operating Instructions Figure 2–5: Ellipse with approximately 13° phase error If the ellipse closes to a single line, the LEFT and RIGHT channels are in phase as long as the line is within 45° of the L=R axis. The line may tilt if the amplitudes are unequal. A line within 45° of the L=–R axis indicates the channels are out of phase. Energy Distribution The 760A’s pattern display provides a graphic representation of the stereo signal’s overall energy distribution. The pattern orientation tells you at a glance whether the present mix is balanced or concentrated to either side. Figures 2–6 and 2–7 illustrate different energy distributions. Figure 2–6: Strong left content 2–8 760A / 760D / 760N Operating Instructions Figure 2–7: Well balanced stereo Monaural Compatibility Transmitting a mono–compatible stereo television signal is, and will remain, critical for broadcasters since most viewers have monaural receivers. The 760A pattern display and the L+R bar indicate the fitness of your audio for monaural reception. Figures 2–7 and 2–8 show, respectively, a stereo signal well suited for monaural reception and a stereo signal unsuited for monaural use due to its large L=–R (out–of–phase) component. Figure 2–8: Stereo unsuited to monaural reception Polarity Reversal 760A / 760D / 760N Routing audio through a complex studio presents many opportunities to introduce polarity reversals. Any time a polarity reversal occurs, the 760A can be used to trace the problem back to its source quickly. By introducing a sine 2–9 Operating Instructions wave into both channels of the system and checking outputs stage by stage, the source of the phase reversal can be quickly identified. Clipping Another problem illustrated clearly by the 760A is clipping. Regardless of its source, clipping manifests itself on the 760A pattern display as a ”squaring off” of the pattern edges. Figure 2–9 illustrates a severe case of clipping. The 760A’s AGC keeps the pattern within the screen boundaries in spite of the amplitude of the signals Figure 2–9: Severe clipping of stereo signal 2–10 760A / 760D / 760N WARNING The following servicing instructions are for use only by qualified personnel. To avoid injury, do not perform any servicing other than that stated in the operating instructions unless you are qualified to do so. Refer to all Safety Summaries before performing any service. Installation Section 3 Installation Unpacking At installation time, save the shipping carton and packaging materials for repackaging in case shipment becomes necessary. See Repackaging for Shipment in SECTION 6, MAINTENANCE, for repackaging instructions. Electrical Installation Power Source This instrument is intended to operate from a single–phase power source having one of its current–carrying conductors at or near earth–ground (the neutral conductor). Only the Line conductor is fused for over–current protection. Systems that have both current–carrying conductors live with respect to ground (such as phase–to–phase in multiphase systems) are not recommended as power sources. WARNING. For your protection and to avoid damage to the instrument, unplug the instrument power cord before removing or replacing any circuit boards, connectors, or jumpers. Mains Frequency and Voltage Ranges The 760A / 760D / 760N Stereo Audio Monitor operate over a frequency range of 48 to 66 Hz, at any mains voltage between 90 VAC and 250 VAC. These newer versions of the 760–Series instruments do not require any internal changes to select their operating voltage range. Changing Input Sensitivity (Standard 760A only) The 760A is factory set so that a specific level applied to each input will indicate a specific level on the bar graph scale (see Table 3–1). While this required input level may be changed for the standard 760A, the 760D and 760N are constrained to use only the factory set levels. Table 3–1: Factory Set Input Sensitivity 760A / 760D / 760N Instrument Type Input Level Bar Graph Readout 760A +8 dBu 0 dB 760D +6 dBu 0 dB 760N +6 dBu +6 dB 3–1 Installation To enable the 760A bar graph to indicate 0 dB with an input of 0, +4, +8, +12, or +16 dBm, move the jumpers on J185 (LEFT), J385 (RIGHT) and J657 (AUXILIARY) to the desired sensitivity, which is marked on the Main circuit board (Assembly A3) at each jumper location. Figure 3–3 shows all jumper locations on the Main board and what each jumper position represents. NOTE. The specified level is that of a sine wave which reads 0 dB peak program level, not the line–up level. For a ppm, line–up level is 8 dB below peak program level. This means that if the house level is +4 dBu (the level that indicates 0 on a VU meter), then the 760A sensitivity jumper should be set 8 dB higher, or +12 dBu. The line–up tone should then read 8 dB. See the discussion about ppm vs. VU meters under Level Setups in Section 2. A User–definable jumper position is provided for installations that use a reference level other than 0, +4, +8, +12, or +16 dBm. The following paragraphs explain the procedure for selecting the proper resistor value so any input level will indicate 0 dB on the bars. User–Definable Input Sensitivity (Standard 760A only) User–definable resistors may be installed at R183 (LEFT), R383 (RIGHT), and R658 (AUXILIARY) if the standard range of input sensitivities previously listed does not fit your needs. These resistor positions are already used in the 760D and 760N. The following formula can be used to determine the value of resistors needed to achieve a 0 dB indication with your reference level: 20K RSET= 7.962 –1 10G/20 where RSET is the user–definable resistor value and G is the desired reference level in dBu. Once the resistor value is determined and resistors are installed at R183, R383, and R658, move the jumpers on J385, J185, and J657 to the ”U” position. This is the factory set jumper position for the 760D and 760N. Changing Input Termination Changing Display Orientation 3–2 The 760A is set at the factory for Infinite input termination, with 600 or 150 termination being jumper selectable. The position of the jumper on J192 (LEFT), J292 (RIGHT), or J664 (AUXILIARY) determines the input termination for that channel. The Main circuit board is marked at the jumper location to indicate the termination value that each jumper position represents. See Figure 3–1. The 760A CRT display can be changed from the factory set ”sound stage” orientation (where L=R is vertical) to a standard X–Y orientation (where Left is vertical). To accomplish this change, you must install the optional external 760A / 760D / 760N Installation graticule supplied with the instrument. Detailed instructions for removing the bezel can be found under the Mechanical Assembly/Disassembly topic in SECTION 4, MAINTENANCE. Then move two jumpers on the Main circuit board, J273 and J373, to the position labeled X–Y (pins 2 & 3) in Figure 3–1. Also for X–Y display orientation, rotate P886 (on back of A3, Main board) so pins 1 and 2 of the connector mate with pins 2 and 1 of J886 (connect backward). Repeat with P862/J862. Remember to return P886 and P862 to their normal (pin 1 to pin 1) positions for Sound Stage display orientation. This provides correct phasing for both display orientations. FRONT TOP DISPLAY ORIENTATION J273 SOUND STAGE X–Y L+R L R–L –R J373 ASSEMBLY A3 MAIN BOARD J657 U 0 dB 4 dB 8 dB 12 dB 16 dB J664 INF 600 150 J185 U 0 dB 4 dB 8 dB 12 dB 16 dB LEFT INPUT J385 U 0 dB 4 dB 8 dB 12 dB 16 dB RIGHT INPUT INPUT SENSITIVITY JUMPERS J192 INF 600 150 J392 INF 600 150 INPUT TERMINATION JUMPERS AUXILIARY INPUT Figure 3–1: 760A / 760D / 760N jumper locations for input and display orientation selections 760A / 760D / 760N 3–3 Installation 3–4 760A / 760D / 760N Maintenance Section 4 Maintenance Introduction This section discusses preventive maintenance, general troubleshooting information, and corrective maintenance. If the instrument does not function properly, troubleshooting and other corrective measures should be taken immediately to prevent any additional problems. Preventive Maintenance Preventive maintenance consists of cleaning, visual inspection, a performance check, and, if needed, readjustment. The preventive maintenance schedule that is established for the instrument should be based on the environment in which the instrument is operated and the amount of use. Under average conditions, a preventive maintenance check should be performed every 2000 hours of instrument operation. Cleaning Clean the instrument often enough to prevent dust or dirt accumulation. Dirt acts as a thermal insulating blanket and prevents effective heat dissipation. It also provides high resistance electrical leakage paths between conductors or components in a humid environment. Exterior. Clean the dust from the outside of the instrument by wiping or brushing the surface with a soft cloth or small brush. The brush will remove dust from around the selector buttons and connectors. Hardened dirt may be removed with a cloth dampened in water that contains a mild detergent. Abrasive cleaners should not be used. CRT. Clean the light filter, graticule and CRT face plate with a soft, lint–free cloth dampened in denatured alcohol. Interior. Clean the interior by loosening the accumulated dust with a dry, soft brush, then remove the loosened dirt with low pressure air to blow the dust clear (high velocity air can damage some parts). Hardened dirt or grease may be removed with a cotton tipped applicator dampened with a solution of mild detergent in water. Abrasive cleaners should not be used. If the circuit board assemblies need cleaning, remove the circuit board by referring to the instructions under Corrective Maintenance in this section. After cleaning, allow the interior to thoroughly dry before applying power to the instrument. 760A / 760D / 760N 4–1 Maintenance CAUTION. Do not allow water to get inside any enclosed assembly or component. Do not clean any plastic materials with organic cleaning solvents, such as benzene, toluene, xylene, acetone, or similar compounds, because they may damage the plastic. Visual Inspection After cleaning, carefully check the instrument for defective connections, damaged parts, and improperly seated transistors and integrated circuits. The remedy for most visible defects is obvious; however, if heat damaged parts are discovered, try to determine the cause of overheating before the damaged part is replaced, otherwise the damage may be repeated. Static–Sensitive Components CAUTION. Static discharge can damage any semiconductor component in this instrument. This instrument contains electrical components that are susceptible to damage from static discharge. Static voltages of 1 kV to 30 kV are common in unprotected environments. Performance Checks and Readjustments The instrument performance should be checked after each 2000 hours of operation, or every 12 months if the instrument is used intermittently, to ensure maximum performance and assist in locating defects that may not be apparent during regular operation. Instructions for conducting a performance check and an adjustment procedure are provided in SECTION 5 , PERFORMANCE CHECK AND CALIBRATION. CORRECTIVE MAINTENANCE NOTE. No repair should be attempted during the warranty period. How To Use This Manual Foldout Pages. Figure 4–1 illustrates the foldout pages at the back of the manual which contain useful information for troubleshooting this instrument. Block and schematic diagrams, circuit board illustrations, and parts locating charts are located on the foldout pages. 4–2 760A / 760D / 760N Maintenance PARTS LOCATING CHART CIRCUIT BOARD ILLUSTRATIONS SCHEMATIC THEORY OF OPERATION OR ADJUSTMENT PROCEDURE SCHEMATIC Figure 4–1: Using the foldout pages Diagrams. Block and circuit diagrams are the most often used aids to troubleshooting. The circuit number and electrical value of each component is shown on the diagram (see the first page in the Diagrams section for a definition of the reference symbology used to identify components in each circuit.) Refer to the Replaceable Electrical Parts List for a complete description of each component. Those portions of the circuits that are mounted on circuit boards or assemblies are enclosed in a gray border, with the name and assembly number shown on the border. Circuit board input and output signals are applied through multi–pin connectors. The connector holder has numbers that identify terminal connectors numbered 2 and up. A triangular key symbol on the connector is also located on the circuit board to identify pin 1 so that the connector can be properly oriented. A pin replacement kit including necessary tools, instructions, and replacement pins is available from Tektronix, Inc. Circuit Board Illustrations. Electrical components, connectors, and test points are identified on circuit board illustrations located on the back of the preceding schematic diagram. Theory of Operation. These pages can be turned to and read while the schematic diagram for that circuit description is folded out. 760A / 760D / 760N 4–3 Maintenance Replaceable Electrical Parts List. The Replaceable Electrical Parts List is arranged in assembly–by–assembly order, as designated by ANSI Standard Y32.16–1975. The circuit number in the parts list is made up by combining the assembly number and the circuit number. EXAMPLE: R117 on A4 would be listed in the Replaceable Electrical Parts List as A4R117. In the Replaceable Electrical Parts List, assemblies are listed first, followed by circuit board mounted parts in alpha numeric order. Parts Locating Charts. The schematic diagrams are assigned location grids. A parts locating chart for each assembly gives grid locations of components on that schematic. Assembly and Circuit Numbering. . The circuit board assemblies are assigned assembly numbers. Figure 4–2 shows the location of the circuit board assemblies in this instrument. A1 POWER SUPPLY BOARD A2 FRONT PANEL BOARD A3 MAIN BOARD REAR PANEL Figure 4–2: Circuit board locations in the 760A/760D/760N The part numbers for ordering these boards are given in Section 8, Replaceable Electrical Parts. Generally, each component is assigned a circuit number according to its geographic location within an assembly. 4–4 760A / 760D / 760N Maintenance NOTE. The parts lists in this manual should be used when ordering replacement parts. Obtaining Replacement Parts Replacement parts are available from or through the local Tektronix, Inc., field office or representative. Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available, and to give you the benefit of the latest circuit improvements developed in our Engineering Department. It is, therefore, important when ordering parts to include the following information in your order: 1. Part Number 2. Instrument Type or Number 3. Serial Number 4. Modification or Option Number (if applicable) If a part that has been ordered has been replaced with a new or improved part, the local Tektronix field office or representative will contact the customer concerning any changes in the part number. After repair, the circuits may need readjustment. TROUBLESHOOTING INFORMATION DAC Servicing The following paragraphs describe information contained in ROMs in the 760A. It is intended to help the technician isolate any problems that appear to originate with the DAC. The service switch, S340, selects different look–up tables in the scale–shaper ROM. (Positions 8 & 9 are unused). Position 0 selects normal scale. Position 1 is the Expanded scale that is also enabled when the EXPAND SCALE push button is depressed. Position 2 an absolute linear scale used for DAC linearity checks which has 35 leading zero positions and two all–ones positions for markers. 760A / 760D / 760N 4–5 Maintenance Position 3 a step function used to check DAC linearity and bit transition glitches. The first nine addresses are one–bit steps. Single transitions are present until one–quarter scale where three successive bits are used for position markers. Since maximum glitch occurs at half scale, the MSB transition is exhibited three times (the only times the scale goes down). The eight bits surrounding the MSB transition are displayed. The upper addresses nearly mirror the lower 50. Position 4 is all zeros which is maximum DAC output and is used to adjust gain. Position 5 is all ones which is minimum DAC output and is used to set offset. Position 6 is a linear scale with one–half LSB error on odd addresses and is used to check system linearity with linear input. Position 7 is the Expanded scale with 20 dB Offset that is used in the Performance Check procedure to check bar accuracy with a 20 dB (18 dB for 760N) input signal. PAL Signal Specification 4–6 The following PAL signal specification details the operation of PALs U438, U638, and U848 and may be helpful when troubleshooting the Peak Hold circuit. PIN 1 CLOCK from U825, approx. 30 kHz PIN 2 CMP goes low when measured signal is equal to or greater than DAC ramp. PIN 3 EQUALS goes low when DAC ramp is equal to stored peak. PIN 4 TIMEOUT goes low while the monostable circuit is timing the three–second peak–hold delay. PIN 5 PK BLK (peak blank): a low level prevents peak segment from being turned on. This line is controlled by a bit position in the scale–shaper ROM, and is used to keep from displaying peaks below 20 dB. PIN 6 PK ON (peak on): a high level from the PEAK–ON flip–flop U823 turns on the PEAK–HOLD feature. PIN 7 GREATER goes low when DAC ramp is greater than the stored peak. PIN 8 (not used) PIN 12 GATE goes low to reset the peak value latch after the three–second timer has timed out. 760A / 760D / 760N Maintenance PIN 18 DELAY makes a low–to–high transition when the current signal value is ≥ the stored peak value. This clocks the current value into the peak value latch and starts the peak–hold time–out circuit. PIN 19 BAR ENABLE goes low when a segment should be lit. The following pins are internal nodes without external connection. PIN 13 LCMP is a delayed and inverted CMP signal. PIN 14 PEAK goes high when the first peak segment should be turned on. PIN 15 DPEAK goes high when the second peak segment should be turned on. PIN 16 S, S and CLEAR (PIN 17); are state variables for a state machine that looks for the low–to–high transition of TIMEOUT. Power Supply Troubleshooting Procedure NOTE. A review of the power supply theory of operation is recommended before attempting repairs. The equipment needed to troubleshoot the power supply: Introduction 760A / 760D / 760N H Digital Multimeter (DMM), with a diode check function H Oscilloscope H 0 to 20 VDC Variable Power Supply H Clip Lead – to short across a component H High Voltage Probe, w1 GW input resistance The Troubleshooting Procedure for the Power Supply (Assembly A1) is split into two sections, the Low Volts and High Volts Supplies. Start the procedure by determining which section of the power supply the problem is in. Apply AC power and turn on the power supply. From Table 4–1, determine which symptom the power supply exhibits and refer to the corresponding procedure. 4–7 Maintenance Table 4–1: Power Supply Fault Symptoms Symptom Procedure Line fuse open Rectifier/Switcher Check (Low Volts) Power supply cycles OFF/ON Output Check (Low Volts), or High Voltage Oscillator Check (High Volts) Does not power up Control Circuit Check (Low Volts) 5 V not regulating Error Amplifier Check (Low Volts) Improper CRT display High Volts Supply Low Volts Supply NOTE. A 20W, 2-watt resistor should be used as a load for the Low Volts Supply. Disconnect J4 and connect the 20W resistor between W1 (+5 V) and TP1 (secondary ground). 1. Preliminary Checks a. A properly functioning and loaded Low Volts supply will output the voltages listed in Table 4–2. Use the DMM to measure the voltages between TP1 and the voltage test points. If the supply is not regulating properly, continue with the procedure. Table 4–2: Low Volts Supply Voltages Test Point Voltage W1 – (+5 V) +4.88 to +5.12 V W4 – (+15 V) +14.0 to +16.0 V W3 – (–15 V) –14.0 to –16.0 V W2 – (+40 V) +39.0 to +41.0 V NOTE. The Low Volts Power Supply troubleshooting is performed without applying AC power. b. Disconnect AC power from the instrument. Disconnect the instrument from the Power Supply by removing the jumper from J4. c. Use the digital multimeter to measure the voltage between TP2 and the tab (drain) of Q9. Be sure the voltage is near 0 V before proceeding. 4–8 760A / 760D / 760N Maintenance CAUTION. Do not proceed until the the drain of Q9 is near 0 V. Dangerous voltage potentials are present in the circuit until the capacitors discharge. 2. Rectifier/Switcher Check a. Use the digital multimeter to measure the voltage between TP2 and the tab (drain) of Q9. Be sure the voltage is near 0 V before proceeding. b. Unsolder and lift one end of R102. c. With the negative lead of the digital multimeter connected to TP2 and the positive lead connected to the tab of Q9, measure the circuit resistance. A resistance of less than 20 kW indicates a shorted mosfet (Q9). If the mosfet is shorted, replace it and perform the Control Circuit Check. d. Using the digital multimeter diode test function, test CR21, CR22, CR23, and CR24 for shorts. Diode replacements must be fast reverse recovery (300 ns) types to reduce conducted noise. e. Reconnect the lifted end of R102. 3. Output Check a. Connect the negative output from the 20 VDC Power Supply to TP1. Connect the positive output to W4 (+15 V). The circuit should draw less than 20 mA. Excessive current draw can be caused by CR11 or U2 (High Volts Power Supply). b. Connect the negative output from the 20 VDC Power Supply to TP1. Connect the positive output to W2 (+40 V). The circuit should draw less than 20 mA. Excessive current draw can be caused by CR14 or Q6 (High Volts Power Supply). c. Connect the positive output from the 20 VDC Power Supply to TP1. Connect the negative output to W3 (–15 V). The circuit should draw less than 20 mA. Excessive current draw can be caused by CR12. d. Connect the negative output from the 5 VDC Power Supply to TP1. Connect the positive output to W1 (+5 V). The circuit should draw less than 20 mA. Excessive current draw can be caused by CR13 or Q1 and Q2 (High Volts Power Supply). 4. Control Circuit Check a. Connect the negative output from the 20 VDC Power Supply to TP2. Connect the positive output to the cathode of CR17. Short C47 with a clip lead. Connect the oscilloscope probe ground to TP2. 760A / 760D / 760N 4–9 Maintenance b. Table 4–3 lists the signal present in a properly functioning control circuit. Table 4–3: Control Circuit Test Points Circuit Location Signal U5, pin 1 Approximately 5 VDC U5, pin 2 Approximately 2 VDC U5, pin 3 0V U5, pin 4 80 kHz triangle wave, 2 Vp-p U5, pin 6 80 kHz square wave, 18 Vp-p U3, pin 1 80 kHz square wave, 5 Vp-p U3, pin 2 2.1 VDC U3, pin 6 2.9 VDC U3, pin 7 Approximately 5 VDC U4, pin 13 80 kHz repetition rate, 300 ns width, approximately 3 Vp-p Q8, collector 80 kHz repetition rate, 400 ns width, switching from 5 V to approximately 2 V 5. Error Amplifier Check a. Connect the negative output from the variable DC power supply to TP1. Connect the positive output to W1 (+5 V). b. Connect the negative output of another variable DC power supply to TP1. Connect the positive output to W4 (+15 V). Set the variable power supply to 20 VDC. c. Connect the digital multimeter between TP1 and the cathode of CR15. d. Set the variable DC power supply connected to W1 (+5 V) to 4.8 V. The cathode of CR15 should be approximately 20 V. e. Set the variable DC power supply connected to W1 (+5 V) to 5.2 V. The cathode of CR15 should be approximately 2 V. f. High Volts Supply 4–10 If this check did not reveal the cause for the +5 V supply not regulating, refer to the Output Check and the Control Circuit Check. Table 4–4 lists the High Volts Supply fault symptoms and procedures. 760A / 760D / 760N Maintenance Load the Low Volts Supply with the instrument, or with the 20 W resistor as stated at the beginning of the Troubleshooting Procedure. Table 4–4: High Volts Supply Fault Symptoms Symptom Procedure Unable to focus CRT using the front-panel control Focus Amplifier Check Unable to adjust CRT intensity using the front-panel control Z-Axis Amplifier Check Grid Drive Check No CRT display High Voltage Oscillator Check CRT Voltage Check Focus Amplifier Check H Unsolder and lift one end of R24. H Turn on the power supply. H Using the digital multimeter, measure the voltage between TP1 and the collector of Q1. It should be approximately –140 V. H Turn off the power supply. H Reconnect the lifted end of R24. Z-Axis Amplifier Check H Unsolder and lift one end of R8. H Turn on the power supply. H Using the digital multimeter, measure the voltage between TP1 and the collector of Q4. It should be approximately +10 V. H Short together the base and emitter of Q5. The collector of Q4 should be approximately +100 V. H Turn off the power supply. H Reconnect the lifted end of R8. Grid Drive Check 760A / 760D / 760N H Turn off the power supply. Use the digital multimeter’s diode check to test CR1, CR2, CR3, CR5, and CR6 for shorts. H Turn on the power supply. 4–11 Maintenance H Using the digital multimeter, measure the voltage between TP1 and the cathode of CR5. It should vary between approximately +75 and +200 V as R58 (CRT Bias) is adjusted. H Connect the oscilloscope probe to the anode of CR5 and the probe ground to TP1. The signal should be a clipped sine wave of +75 to +200 Vp-p. High Voltage Oscillator Check H Connect the oscilloscope probe to T1 pin 3 (Q6 collector) and the probe ground to TP1. Turn on the power supply. The signal should be a +60 Vp-p, 22 kHz sine wave. H Check the following voltages using the digital multimeter: Table 4–5: High Voltage Oscillator Test Points Circuit Location Voltage T1, pin 4 Approximately +40 V. T1, pin 13 Less than +2 V. U2, pin 2 Approximately +4.8 V. U2, pin 6 +4 to +11 V. CR9, cathode Approximately +100 V. CRT Voltage Check NOTE. This check requires a high voltage probe having an input resistance of 1 GW or more. 4–12 H Connect the high voltage probe ground to TP1. H Load the Low Volts supply with the instrument, or with a 20W, 2 watt resistor loading the 5 V supply. H Turn on the power supply. H Use the high voltage probe to measure the voltage at the anode of CR4. It should be approximately –2530 V. H Measure the voltage at the anode end of CR3. It should be 50-150 V more negative than the reading from the anode of CR4. 760A / 760D / 760N Maintenance MECHANICAL DISASSEMBLY AND ASSEMBLY Before removing parts from the 760A, disconnect the power cord and then remove the instrument from its cabinet. Reassembly is performed by reversing the steps used to disassemble the instrument. WARNING. For your protection and to avoid damage to the instrument, when removing or replacing any of the circuit boards, shut the instrument off. CAUTION. Do not reinsert screws in the rear panel when removed from the cabinet. NOTE. All screws, unless otherwise noted, are TORX_ screws and can be removed with a T15 screwdriver tip (Tektronix part number 006–3461–00). The exception is #2 Pozidrive screws which fasten the front–panel POWER switch and rear–panel XLR connectors. They can be removed with a #1 Pozidrive tip (003–0443–00). Bezel Removal 1. Remove the two bezel retaining screws. See Figure 4-3. bezel removal screws Figure 4–3: Bezel removal 760A / 760D / 760N 4–13 Maintenance 2. Grasping the bottom of the bezel, pull out and upward. The bezel has two hinges that hold the top in place that need to be cleared. 3. To replace, reverse the procedure. Graticule Light Removal and Replacement 1. Remove the bezel, following the preceding procedure. 2. Using a pair of needle nose pliers, gently grasp the graticule light and carefully pull straight out. 3. The light is replaced by carefully lining up the holders with the round pins that they are to be inserted into. Use the needle nose pliers to lock them back into place. 4. Replace the bezel. Removal of the CRT 1. Remove the bezel. WARNING. The CRT may retain a dangerous charge. Ground the conductor of the anode to discharge the CRT. Do not allow the conductor to touch your body or any circuitry. 2. Slide a screwdriver with an insulated handle under the anode cap on the side of the CRT, and ground the anode to the chassis, to discharge the CRT. DO NOT touch the metal shaft of the screwdriver while doing this. Disconnect the anode cap by prying it gently away from the CRT. 3. Disconnect P419 (trace rotation) on the Main board and push the connector through the hole in the board. 4. The CRT can now be pulled straight out (some pressure may be needed). The CRT shield, along with the grommet around its front and the rubber manchet around its back, should come out with the CRT. Replacing the CRT 1. If the CRT is to be replaced, remove the metal shield from the neck of the old CRT and place it around the neck of the new CRT, with the WARNING sticker towards the top of the instrument. This should place the opening in the grommet on the front edge of the shield towards the bottom of the instrument. Ensure that the rubber manchet is on the back edge of the shield. 4–14 760A / 760D / 760N Maintenance 2. Slip the CRT part way back into position and feed the trace rotation wires (and plug) back through the hole in the Main board. WARNING. The CRT may retain a dangerous charge. Ground the the anode connector to discharge the CRT. Do not allow the conductor to touch your body or any circuitry. 3. Use a screwdriver to ground the anode connector on the CRT to the chassis. 4. Slide the CRT into the instrument, guiding the rubber manchet on the end of the shield into the rear CRT support. 5. Align the socket on the A10 CRT Socket board with the pins and key on the CRT. Gently push the CRT and the socket board together until the CRT pins are fully seated in the socket. 6. Replace the trace rotation connector (P419, Main board), and snap the anode lead onto the anode connector on the side of the CRT. 7. Wipe the faceplate of the CRT to remove fingerprints, then replace the bezel. If the fit is too tight to allow the bezel to go into position, or if the CRT has a loose fit after the bezel is completely tightened down, then the rear CRT support must be repositioned. To reposition the rear CRT support, loosen the two nuts that hold the support in place. With the CRT and bezel in place, push the support towards the front of the instrument until it is snug against the rubber manchet on the rear of the CRT shield. Tighten the two support nuts. Rear Panel Removal and Replacement 1. Remove the two Pozidrive screws from each rear–panel XLR connector. 2. Remove the five screws from the rear panel. 3. To replace, reverse the procedure. Front Panel Assembly Removal and Replacement 1. Remove multi–pin connectors P110 and P135 from the Main board. 2. Remove the two screws that hold the front–panel assembly in place. 3. The assembly can now be removed by slipping it through the front. 4. To access the Front Panel board components: a. Remove the two knobs from the front. 760A / 760D / 760N 4–15 Maintenance b. Remove the four screws from the rear. c. The board may now be separated from the front panel and the components should be accessible. 5. To reassemble, reverse the procedure. NOTE. When remounting the Front Panel board to the front panel, carefully line up the LED bars so they fit inside the cut–outs in the front panel. LED Bar and Socket Removal and Replacement 1. Disassemble the front–panel assembly using the procedure just given, and remove the LED bar. 2. Install the new LED bar so the end with the three leads closely spaced are at the top of the LED bar socket. The LED bar will not work properly if installed backwards. 3. To replace a damaged socket, unsolder the old socket. Notice that there are two sockets for each LED bar. 4. Replace the socket with two 20–pin sockets, trimming three pins from either one to provide the 37 pins necessary for the LED bar. Main Board Removal and Replacement 1. Remove the following connections: P110 and P135 (to Front Panel board), P153 (to Power Supply board), P419, trace rotation (to CRT), P862 (to H defl. amp) and P882 (to V defl. amp). 2. Push the trace rotation lead through its hole in the Main board. 3. Remove the knobs from the GRATICULE and ILLUMINATION controls. 4. Remove the eight retaining screws. See Figure 4–4 for locations. 4–16 760A / 760D / 760N Maintenance Ground strap J1 J3 ÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉ A1 Power Supply board retaining screws J2 J4 FRONT REAR A3 Main board retaining screws Figure 4–4: Retaining screw locations 5. To remove the board, slide it toward the rear panel until the potentiometer shafts clear the front and then lift it out. 6. To replace the Main board, lay the board flat and slide it back into place (there are grooves in the front molding for the board to slide into). Perform steps 1 through 4 above in reverse order. Power Supply Board Removal and Replacement 1. Remove the plug from J4 on the Power Supply board (the connection to the Main board). 2. Remove the anode connection from the CRT and discharge it to ground. WARNING. The CRT may retain a dangerous charge. Ground the conductor of the anode to discharge the CRT. Do not allow the conductor to touch your body or any circuitry. 3. Remove the plugs from J1 and J3 (the CRT wires). Remove the plug from J2 (the power switch). 4. Remove the two screws from the rear panel that hold the AC line filter in place. 5. Using a #1 Pozidrive tip, disconnect the power ON/OFF switch from the Front Panel assembly. 6. Remove the seven screws that are holding the board down. See Figure 4–4. 760A / 760D / 760N 4–17 Maintenance 7. Remove the board by sliding it forward and lifting it up. 8. To replace the board, reverse this procedure. REPACKAGING If the instrument is to be shipped to a Tektronix Service Center for service or repair, attach a tag to the instrument showing: 1. Owner (with complete address) and the name of the person at your firm that can be contacted. 2. Instrument serial number and a description of the service required. Repackage the instrument in the original manner for maximum protection (see Figure 4–5). ÏÏÏ ÏÏÏ ÏÏÏ Figure 4–5: Repackaging the 760A/760D/760N 4–18 760A / 760D / 760N Maintenance For best results, save and reuse the package in which your instrument was shipped. If the original package is unfit for use or not available, repackage the instrument as follows: 1. Obtain a carton of corrugated cardboard having inside dimensions of six inches, or more, greater than the dimensions of the instrument. This will allow for cushioning. Use a shipping carton that has a test strength of at least 275 pounds. 2. Surround the instrument with polyethylene sheeting to protect the finish. 3. Cushion the instrument on all sides by tightly packing dunnage or urethane foam between the carton and the instrument. Allow three inches on all sides for cushioning. 4. Seal the carton with shipping tape or an industrial stapler. 760A / 760D / 760N 4–19 Maintenance 4–20 760A / 760D / 760N Performance Check and Calibration Section 5 Performance Check and Calibration Procedures Introduction This section of the manual consists of two procedures. The Performance Check procedure is a guide to verifying warranted specifications of the 760A, while the Adjustment procedure, when properly performed, will result in a 760A that performs as warranted in SECTION 1, INTRODUCTION AND SPECIFICATION. Throughout both procedures, all 760A front– and rear–panel nomenclature is fully capitalized, (e.g., DISPLAY GAIN). All 760A internal adjustment and jumper names have only the first letter capitalized, (e.g., Geometry). Required Test Equipment The following list of test equipment and requirements are the minimum necessary to perform the Performance Check and Adjustment procedures. The specific test gear that was used to develop this procedure is listed in parenthesis after each generic test equipment name. 1. Leveled Audio Frequency Signal Generator (TEKTRONIX SG 505 Opt. 2) Balanced Output 50Ω impedance Frequency Range 20 Hz to 20 kHz Output Level Range 3.5 mVrms to 4.89 Vrms Frequency Response "0.1 dB from 20 Hz to 20 kHz (1 kHz reference) 2. RMS Voltmeter (TEKTRONIX DM 501A) Accuracy: "2% of reading, 20 Hz to 20 kHz. 3. Digital Volt/Ohm meter (TEKTRONIX DM 501A) Dc Accuracy: "0.5% of reading, –12 V to +12 V. 4. Test Oscilloscope with Differential Comparator, with two X1 probes. Adjustment procedure only (TEKTRONIX 7704 w/7A13) Common–Mode Rejection: 1000:1 5. Variable Autotransformer (General Radio Metered Auto Transformer W10MT3W) If 220 volt operation must be checked, a conversion transformer or appropriate 220 volt autotransformer is needed. 6. Male XLR adapter cables (3) Manufacture three cables that will interconnect the 760A rear–panel XLR connectors with the Leveled and Second Audio Signal Generator outputs. XLR pin 1 = Gnd XLR pin 2 = + XLR pin 3 = – 760A / 760D / 760N 5–1 Performance Check and Calibration Procedures Performance Check Procedure 1. Initial Alignment NOTE. This step must be performed prior to beginning this procedure. a. Set the 760A for a “Sound Stage” orientation (on A3 Main board, J273 and J373 to pins 2 and 3) and install the “Sound Stage” graticule, if your 760A is not set up in this way. See Figure 5–1 for jumper locations. TOP FRONT J185 ASSEMBLY A3 MAIN BOARD J273 L+R L STAGING DISPLAY ORIENTATION R–L –R J373 X–Y INPUT SENSITIVITY JUMPER 0 dB 4 dB 8 dB 12 dB 16 dB INF 600 W 150 W INPUT TERMINATION JUMPER LEFT INPUT RIGHT INPUT U 0 dB 4 dB 8 dB 12 dB 16 dB INF 600 W 150 W 0 dB 4 dB 8 dB 12 dB 16 dB INF 600 W 150 W J657 U 0 dB 4 dB 8 dB 12 dB 16 dB LEGEND J192 J385 J392 J664 INF 600 W 150 W AUXILIARY INPUT FRONT ASSEMBLY A3 MAIN BOARD TOP S340 R347 R155 R252 R253 R351 R352 R553 R262 R463 R580 R556 R546 R776 R782 R789 R786 R758 R759 Figure 5–1: Jumper (top) and adjustment (bottom) locations on the A3 Main board 5–2 760A / 760D / 760N Performance Check and Calibration Procedures b. Connect the 760–series AC power cord to the variable autotransformer. Turn power on and set the autotransformer to the local nominal mains voltage (either 110 or 220 volts). Set the GRATICULE illumination so the graticule markings are clearly visible. c. With no inputs to the LEFT or RIGHT AUDIO INPUTS, set the INTENSITY control for an easily visible dot. d. Set the VERTICAL and HORIZONTAL POSITION controls so the illuminated dot is centered on the graticule. e. Set the INTENSITY control to a comfortable display level. f. Set the FOCUS control for the sharpest possible dot. g. Connect the leveled audio signal generator balanced output to the LEFT AUDIO INPUT and set the equipment controls as follows: 760A SELECT PEAK HOLD DISPLAY GAIN INPUT TERMINATION INPUT SENSITIVITY 760A 760D 760N AUX OFF AUTO INFinite 0 dB U U Leveled Audio Signal Generator Output Sine Wave Frequency 1 kHz Output Level 760A 775 mVrms 760D 550 mVrms 760N 777 mVrms NOTE. Unless directed otherwise, use these Leveled Audio Signal Generator settings for all steps of this procedure. h. Set the INTENSITY control for an easily visible trace and set the TRACE ROTATION control to overlay the trace on the “L” graticule line. 2. Check Power Supply Operation a. Vary the autotransformer from low-line to high-line voltage (90 – 132 V for 110 V, or 180 – 250 V for 220 V operation). b. CHECK – for stable instrument operation over the prescribed voltage range. 760A / 760D / 760N 5–3 Performance Check and Calibration Procedures c. Return the autotransformer to the local nominal mains voltage. 3. Check Input Termination a. Disconnect the input from the LEFT AUDIO INPUT. b. CHECK – that the resistance across pins 2 and 3 of each rear–panel XLR input is greater than 10k Ω. c. Set the Input Termination for each AUDIO INPUT to the 600 Ω position (see Figure 5–1). d. CHECK – that the resistance across pins 2 and 3 of each input is 600 Ω "50 Ω. e. Set the Input Termination for each AUDIO INPUT to the 150 Ω position. f. CHECK – that the resistance across pins 2 and 3 of each input is 150 Ω "20 Ω. g. Set the Input Termination for each AUDIO INPUT to the INF position. 4. Check Bar Graph Accuracy (0 dB "0.3 dB) a. Connect the leveled audio signal generator output to the LEFT AUDIO INPUT. b. Adjust the signal generator amplitude so that the bar graph’s top green LED is just lit. c. CHECK – that the signal generator amplitude is within the following limits: 760A: 748.7 – 802.1 mVrms (775 mVrms "0.3 dB) 760D: 531.4 – 569.3 mVrms (550 mVrms "0.3 dB) 760N: 750.7 – 804.2 mVrms (777 mVrms "0.3 dB) d. Set the audio generator output level to: 760A: 308.5 mVrms (–8 dB TEST) 760D: 550 mVrms (–9 dB arrowhead) 760N: 777 mVrms (0 dB TEST) e. CHECK – the bar level while holding the EXPAND SCALE button in: 760A: –8 dB "0.3 dB (3 segments) 760D: –9 dB "0.3 dB (2 segments) 760N: 0 dB "0.3 dB (3 segments) 5–4 760A / 760D / 760N Performance Check and Calibration Procedures Check the RIGHT and AUXILIARY bars in the same manner, connecting the input signal to one 760A AUDIO INPUT at a time. f. (760A only) Set S340 to position 6. g. CHECK – (760A only) that each bar indicates 0 dB "0.3 dB (6 segments or less from 0 dB) with the combinations of 760A INPUT SENSITIVITY jumper settings and audio signal generator output levels given in Table 5–1. h. (760A only) Set S340 to position 0. Table 5–1: Verifying Input Sensitivity (760A only) Input Sensitivity Jumper Setting Input Level 760A Bar Reading +4 dB 1.228 Vrms 0 dB +8 dB 1.947 Vrms 0 dB +12 dB 3.085 Vrms 0 dB +16 dB 4.890 Vrms 0 dB 0 dB 775 mVrms 0 dB 5. Check AGC Control Range a. Connect the leveled audio signal generator output to the LEFT and RIGHT AUDIO INPUTs. b. CHECK – that when the leveled audio signal generator output level is varied (as indicated on the RIGHT and LEFT bars) between: 760A: +8dB and –20 dB 760D: +5 dB and –25 dB 760N: +15 dB and –15 dB that the size of the CRT display changes very little. 6. Check Gain Match a. Connect the leveled audio signal generator output to the LEFT AUDIO INPUT and set the DISPLAY GAIN control to CAL. b. Set the leveled audio signal generator output level so the trace ends on the center amplitude mark of the “L” graticule line. See Figure 2–3 for a description of the graticule markings. c. Move the input signal from the LEFT AUDIO INPUT to the RIGHT AUDIO INPUT. 760A / 760D / 760N 5–5 Performance Check and Calibration Procedures d. CHECK – that the trace ends within one–half division of the center amplitude mark of the “R” graticule line. 7. Check Gain Tracking a. With the leveled audio signal generator output still connected to the RIGHT AUDIO INPUT, set the DISPLAY GAIN control to AUTO. b. Align the trace with the “R” graticule line. c. CHECK – that when the leveled audio signal generator output level is varied (as indicated on the RIGHT bar) between: 760A: +8dB and –20 dB 760D : +5 dB and –25 dB 760N : +15 dB and –15 dB that the trace rotates less than one–half the length of the minor amplitude mark (the distance from the axis to the end of the minor amplitude mark). See Figure 2–3 for a description of the graticule. 8. Check Phase Match a. Set the 760A for an X–Y display orientation (P273 & P373 on pins 1 & 2, lower pins). Do not change to the X–Y graticule. b. Connect the leveled audio signal generator output to the LEFT and RIGHT AUDIO INPUTs. c. CHECK – that when the leveled audio signal generator frequency is set at 20 Hz, 500Hz, 1 kHz and 20 kHz, any trace separation is less than one trace width. d. Reset the 760A for a “sound stage” display orientation (P273 & P373 on pins 2 & 3, upper pins). 9. Check CRT Frequency Response a. Connect the leveled audio signal generator output to the RIGHT AUDIO INPUT and set the DISPLAY GAIN control to MANual. b. Set the MANual GAIN control so the trace ends on the center amplitude mark. c. CHECK – that when the leveled audio signal generator frequency is varied from 20 Hz to 20 kHz, the trace length changes less than one division. 5–6 760A / 760D / 760N Performance Check and Calibration Procedures d. Move the leveled audio signal generator output from the RIGHT to the LEFT AUDIO INPUT and repeat part c of this step. 10. MANual Gain, CAL Gain and PEAK HOLD a. Connect the leveled audio signal generator output to the LEFT and RIGHT AUDIO INPUTs. b. CHECK – that when the DISPLAY GAIN is varied in its MANual gain range (between detents), the CRT display size varies with no rotation of the trace. c. Set the DISPLAY GAIN control to CAL and remove the signal from the RIGHT AUDIO INPUT. d. CHECK – that the trace extends to the major amplitude mark on the L graticule line. e. Connect inputs to all three AUDIO INPUTs. f. CHECK – that when the audio inputs are removed from the 760A, two segments at the top of the indicated levels remain lit for approximately three seconds. 11. Check Z–Axis Dimming a. Connect the leveled audio signal generator output to the RIGHT AUDIO INPUT and set the DISPLAY GAIN control to MANual. b. CHECK – that when the input signal is removed, the display disappears. 12. Check Bar Frequency Response a. Connect the leveled audio signal generator outputs to the LEFT, RIGHT, and AUXILIARY AUDIO INPUTs, and set SELECT to AUX. b. With the EXPAND SCALE push button depressed, set the audio signal generator output level so the LEFT bar indicates: 760A: –8 dB (TEST) 760D: –9 dB 760N: 0 dB (TEST) c. CHECK – that when the audio signal generator frequency is varied from 20 Hz to 20 kHz and the EXPAND SCALE push button is depressed, each bar amplitude changes less than 0.5 dB, which is: 760A: 760D: 760A / 760D / 760N "5 bar segments "4 bar segments 5–7 Performance Check and Calibration Procedures 760N: "5 bar segments d. Set S340 to Position 7 (expanded scale with offset). e. Set the leveled audio signal generator output level so the LEFT bar indicates: 760A: 0 dB 760D : 0 dB on white scale 760N : 0 dB on blue scale f. CHECK – that when the audio signal generator frequency is varied from 20 Hz to 20 kHz each bar amplitude changes less than 0.5 dB. With S340 set to position 7, this is: 760A: "10 bar segments (+4 to –4 scale marks) 760D: "4 bar segments 760N: "5 bar segments g. Set S340 to Position 0 (normal scale). 13. Check Bar Gain Match a. Connect the leveled audio signal generator output to the LEFT AUDIO INPUT only, and set SELECT to AUX. b. With the EXPAND SCALE push button depressed, set the audio signal generator output level so the LEFT bar indicates: 760A: –8 dB (TEST) 760D: 0 dB 760N: –9 dB c. Move the input from the LEFT to the RIGHT AUDIO INPUT. d. CHECK – that with the EXPAND SCALE push button depressed, the RIGHT bar amplitude matches the LEFT bar amplitude within 0.3dB: 760A: 760D: 760N: "3 bar segments "2 bar segments "3 bar segments e. Move the input from the RIGHT to the AUXILIARY AUDIO INPUT. f. 5–8 CHECK – that with the EXPAND SCALE push button depressed, the AUXILIARY bar amplitude matches the LEFT bar amplitude within 0.3 dB. 760A / 760D / 760N Performance Check and Calibration Procedures 14. Check Bar Crosstalk a. Connect the leveled audio signal generator output to the LEFT AUDIO INPUT and set SELECT to AUX. b. Set the leveled audio signal generator for the following output: Output Sine Wave Frequency 1 kHz Output Level 760A 4.2 Vrms 760D 5.5 Vrms 760N 9.8 Vrms c. CHECK – that none of the RIGHT or AUXILIARY bar segments are lit. d. Move the input from the LEFT to the RIGHT AUDIO INPUT. e. CHECK – that none of the LEFT or AUXILIARY bar segments are lit. f. Move the input from the RIGHT to the AUXILIARY AUDIO INPUT. g. CHECK – that none of the LEFT or RIGHT bar segments are lit. 15. Check Third Bar Selection a. Connect the output of the leveled audio signal generator to the LEFT and RIGHT AUDIO INPUTs, and ensure there is no input to the AUXILIARY AUDIO INPUT. Set the audio generator output level to 775 mVrms (1.55 mVrms for 760D or 760N ). b. Set the SELECT control to AUX and PEAK HOLD to ON. c. CHECK – that no segments of the third bar are lit. d. Set the SELECT control to L+R (SUM). 2 e. CHECK – that the third bar is at the same level as the LEFT and RIGHT LED bars. Set the SELECT control to L–R (DIFF). 2 g. CHECK – that no segments are lit on the third bar. f. h. (760D and 760N only) Reset the Input Termination, Sensitivity and Orientation jumpers to fit your application. Factory set positions are: Input Sensitivity: U Input Termination: INF Display Orientation: Sound Stage See Figure 5–1 for jumper locations. 760A / 760D / 760N 5–9 Performance Check and Calibration Procedures 16. Check Dynamic Response (760A only) Attack Time a. Set S340 to position 6, and turn off (release) the PEAK HOLD control. b. Connect the output of the audio signal generator to the LEFT AUDIO INPUT. Set the generator frequency to 10 kHz, and set the output level for a bar reading of 0 dB (top green LED on). c. Set S340 to position 2, and turn on the PEAK HOLD control. d. Without changing the frequency or output level of the audio generator, set it for: On Cycles: 50 Off Cycles: 50,000 Mode: Tone Burst e. CHECK – that the peak–held reading is between the +4 dB and –4 dB scale marks ("0.75 dB with S340 at position 2). f. Set S340 to position 3, and change the audio generator On Cycles to 5. Do not change any other generator settings. g. CHECK – that the peak–held reading is between the +4 dB and –4 dB scale marks ("2.0 dB with S340 at position 3). Decay Time h. Set S340 to position 0, and set the audio generator to: On Cycles : 10,000 Off Cycles: 25,000 i. CHECK – that the bar does not decay below –24 dB at it’s lowest point (between bursts). j. Change the audio generator Off Cycles to 31,000. k. CHECK – that the bar does decay below –24 dB at it’s lowest point (between bursts). l. Repeat parts a through k of this step for the RIGHT and then the AUXILIARY AUDIO INPUTS in turn. m. Set S340 to position 0. Reset the Input Termination, Sensitivity and Orientation jumpers to fit your application. Factory set positions are: Input Sensitivity: 8 dB Input Termination: INF Display Orientation: Sound Stage See Figure 5–1 for jumper locations. This concludes the 760A / 760D / 760N Performance Check Procedure 5–10 760A / 760D / 760N Performance Check and Calibration Procedures Calibration Procedure 1. Preliminary Set Up NOTE. Unless otherwise stated, always set the Leveled Audio Signal Generator for a 1 kHz sine wave at the following level: 760A 775 mVrms 760D 550 mVrms 760N 777 mVrms a. Set the display orientation to X–Y (on A3 Main board, J273 & J373 to pins 1 & 2). Use the “sound stage” graticule even though the X–Y orientation is in use. Set the Input Termination (A3 – J192, J392, and J664) to Inf, and the Input Sensitivity (A3 – J185, J385, and J657) as shown: 760A 760D, 760N 0 dB U b. Set the 760A front panel controls as follows: SELECT PEAK HOLD DISPLAY GAIN AUX OFF AUTO 2. Adjust +5 V a. Connect the DMM negative lead to TP1 (GND) and the positive lead to W1 (+5V). b. ADJUST – R99 (+5V ADJ) for +5.0 V "0.5V. See Figure 5–2 for adjustment locations. 3. Adjust DAC Offset and Gain a. Connect the digital voltmeter leads to TP248 (DAC output, on A3) and analog ground (marked A GND). b. Set S340 (on A3) to Position 5. c. ADJUST – R253 (DAC offset, on A3) for 0.000 Vdc. d. Set S340 to Position 4. e. ADJUST – R252 (DAC gain, on A3) for 5.000 Vdc. f. 760A / 760D / 760N Set rotary switch S340 to Position 0 (normal operation). 5–11 Performance Check and Calibration Procedures TOP S340 R347 R155 R252 R253 R351 R352 R553 R262 R463 R580 R556 R546 R776 R759 FOCUS R11 R789 R786 R758 FRONT R782 A3 MAIN BOARD ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ CAUTION MAINS VOLTAGE GEOM R45 ASTIG R49 CRT BIAS R58 W4 –15V W1 +5V W3 +15V +5V ADJ * R99 A1 PWR SPLY BD Figure 5–2: 760–Series Adjustment Locations 4. Adjust CRT Bias a. Connect the signal from the leveled audio signal generator to the LEFT AUDIO INPUT. b. Turn the INTENSITY and GRATICULE controls fully counterclockwise. c. ADJUST – R58 (CRT BIAS) so that the display is just extinguished. d. Set the INTENSITY and GRATICULE controls to a desired level. e. Remove the signal at the LEFT AUDIO INPUT. 5–12 760A / 760D / 760N Performance Check and Calibration Procedures f. CHECK – that the crt is blanked out while there is no signal applied. 5. Adjust Geometry, Focus, and Astigmatism a. ADJUST – R45 (GEOM) for 35V "1V at pin 1 of J3. a. Reconnect the signal from the leveled audio signal generator to the LEFT AUDIO INPUT. b. Set the FOCUS control on the front panel so that it is approximately at the center of its range. c. ADJUST – R11 (CTR FOCUS) and R49 (ASTIG) for the most clearly defined display. 6. Adjust Horizontal Position, and Trace Rotation a. Reconnect the signal from the leveled audio signal generator to the LEFT AUDIO INPUT. b. ADJUST – The front panel HORIZontal POSition control (R600) to center the trace. c. ADJUST – The front panel TRACE ROTation control (R400) to align the trace with the vertical (L=R) axis. 7. Adjust Horizontal Dynamic Stability a. ADJUST – R777 (Horizontal Channel Offset Control, on A3) to eliminate any left–right motion of the vertical trace as the audio generator is turned on and off. NOTE. If the audio generator is capable of tone burst operation, such as the TEKTRONIX SG5010, it may be set for one second on one second off tone burst operation, instead of turning the generator on and off. 8. Adjust Vertical Position and Orthogonality a. Move the leveled audio signal generator output to the RIGHT AUDIO INPUT. b. ADJUST – The front panel VERTical POSition control (R601) to center the trace on the dotted horizontal line. 760A / 760D / 760N 5–13 Performance Check and Calibration Procedures c. ADJUST – R463 (Orthogonality) on the A3 Main board, to align the trace with the dotted horizontal line. 9. Adjust Vertical Dynamic Stability a. ADJUST – R782 to eliminate updown motion of the horizontal trace as the audio generator is turned on and off. NOTE. If the audio generator is capable of tone burst operation, such as the TEKTRONIX SG5010, it may be set for one second on one second off tone burst operation, instead of turning the generator on and off. 10. Adjust Vertical/Horizontal Gain Balance a. Connect the leveled audio signal generator output to both the RIGHT and LEFT AUDIO INPUTs. Check that the trace is directly under the R graticule line. b. Connect the X1 probes from the oscilloscope differential inputs to TP885 and TP866. c. ADJUST – R580 for minimum differential signal (approximately 5 mV). 11. Adjust Horizontal and Vertical Gains a. Connect the leveled audio signal generator output to both the RIGHT and LEFT AUDIO INPUTs. b. Ensure the DISPLAY GAIN control is set to AUTO. c. ADJUST – R786 (Vertical Gain Adj, on A3) and R759 (Horiz Gain Adj) so the trace remains directly under the R graticule line (45) and ends at the center amplitude mark. 12. Adjust CAL Gain a. Set the front panel DISPLAY GAIN control to CAL. b. ADJUST – R262 (Cal, on A3) to extend the trace to the end of the R graticule line. c. Set the audio signal generator frequency to 20 kHz. d. ADJUST – R789 (Channel Match, on A3) to close the sides of the ellipse to a single line (no trace separation). 5–14 760A / 760D / 760N Performance Check and Calibration Procedures e. Set the audio signal generator frequency to 20 Hz. f. CHECK – that the display shows no separation of the trace. 13. Adjust LED Bar Gains a. Connect the leveled audio signal generator output to all three AUDIO INPUTs. b. Set the leveled audio signal generator to the output level shown in Table 5–2. Table 5–2: LED Bar Gain Adjustment Inst Signal Level Left Right Aux R351 R352 R553 760A 7.75 mVrms Adjust for 5 segments lit. 760D 15.50 mVrms Adjust for 6 segments lit. 760N 15.50 mVrms Adjust for 4 segments lit. c. ADJUST – R351 (Left Offset Adjust), R352 (Right Offset Adjust), and R553 (Aux Offset Adjust) so that the correct number of LED segments are lighted, as shown in Table 5–2. d. (760A only) Set S340 to position 6 (expands around 0 dB, 0.05 dB/segment resolution). e. Set the audio signal generator to the output level shown in Table 5–3. Table 5–3: LED Bar Reference Adjustment Inst Signal Level Left Right Aux R347 R546 R758 760A 775 mVrms 0 dB 760D 550 mVrms –9 dB (arrowhead) 760N 777 mVrms 0 dB (TEST) f. ADJUST – R347, R546, and R758 for the LED bar reading shown in Table 5–3. For the 760D and 760N, depress the EXPAND SCALE button while making this adjustment. g. (760A only) Set S340 to position 0. This concludes the 760A / 760D / 760N Calibration Procedure 760A / 760D / 760N 5–15 Performance Check and Calibration Procedures 5–16 760A / 760D / 760N Theory of Operation Section 6 Theory of Operation INTRODUCTION This section is intended to give a thorough understanding of the 760A / 760D / 760N Stereo Audio Monitor’s operational theory. A block diagram is provided to show the relationships between major functional blocks of circuitry. Each block directly relates to a portion of circuitry on a schematic that is described in detail in this section. The name of each schematic diagram is listed as a paragraph title (upper case) and is followed by the diagram number (in parenthesis). The circuit blocks on each diagram follow the appropriate diagram title. When identical circuits exist for vertical and horizontal, or for left or right channels, only one will be described. BLOCK DIAGRAM Figure 6–1 (on the following page) is the 760A / 760D / 760N block diagram. DETAILED CIRCUIT DESCRIPTIONS INPUT AMPLIFIERS <1> The LEFT, RIGHT, and AUX input amplifiers are instrumentation amplifier circuits. For the standard 760A/760D/760N, the gain (in dB) may be selected by moving J185, J385, or J657 for the LEFT, RIGHT, or AUX, respectively, to the appropriate pins for reference levels of 0, +4, +8, +12, or +16 dBu. There is an additional position, U, which is provided for installations which use a reference level other than these. See SECTION 3, INSTALLATION, for instructions on calculating the proper resistor values. The 760D and the 760N are designed to indicate 0 dB and +6 dB, respectively, with a 1.55 Vrms input. This is in accordance with DIN 45 406 and, for the 760N, Technical Recommendation N9. In order to accomplish this, resistors of the appropriate value have been installed in the positions selected by the U settings of J185, J385, and J657; therefore, only the U positions may be used for the 760D and 760N. The inputs may be terminated by 150 Ω, 600 Ω, or >20k Ω as selected by J192, J392 and J664 for LEFT, RIGHT and AUX, respectively. 760A / 760D / 760N 6–1 Theory of Operation MATRIX & AGC CONTROL LOGIC <4> 45° Matrix. The Left and Right signals are added in U179 and subtracted in U379 to produce L+R and L–R signals. These signals, if applied to the CRT, will rotate the pattern 45° counterclockwise, so that the Left signals are indicated along the left 45° diagonal and Right signals along the right 45° diagonal. A vertical line indicates Left and Right signals are equal and in phase (mono). This orientation makes pattern interpretation more natural. The user may bypass the matrix using jumpers J273 and J373 so that Left signals are indicated on the vertical axis and Right signals on the horizontal. Equal Left and Right signals (Mono) are then indicated along the right 45° diagonal. L+R –L Gain Control LEFT Input Amplifier Orthogonality Correction 45° Matrix . RIGHT Input Amplifier Gain Control Logic Low Pass Filter Vertical Deflection Amplifier . Z–Axis Dimming V. POS. Z–Axis Amplifier CRT . Gain Control Low Pass Filter Horizontal Deflection Amplifier . R–L –R INTEN– SITY DISPLAY GAIN AUX Input Amplifier SUM PEAK HOLD DIFF LEFT Dynamic Response LEFT Bar Anode Driver LEFT Peak Processor RIGHT Dynamic Response 10 X 10 RIGHT Bar Anode Driver RIGHT Peak Processor AUX Bar Anode Driver AUX Peak Processor Down Counter Circles represent Front–Panel Controls Scale Shaper RIGHT LED BAR RIGHT Bar Cathode Driver AUX LED BAR 10 X 10 SELECT Master Clock LEFT Bar Cathode Driver 10 X 10 Select Logic AUX Dynamic Response H. POS. LEFT LED BAR AUX Bar Cathode Driver DAC EXPAND SCALE Figure 6–1: 760A / 760D / 760N Block Diagram CRT Orthogonality Correction. A small amount of the signal from the horizontal signal path (amplitude and polarity adjusted by R463) is applied to the vertical path to correct for small differences in CRT deflection orthogonality. 6–2 760A / 760D / 760N Theory of Operation Trace Rotation. A dc current through the trace rotation coil magnetically corrects rotation. Gain Control Logic. The signal from the Input Amplifier is full wave rectified in the precision rectifier, U462, and filtered and compared by U361 to determine the largest signal. The comparator output is combined with AUTO and CAL in U153, a one of eight decoder. Depending on the input combination, analog switches U172 and U167 select the appropriate signal to be applied to the Gain Control circuit. AUTO is the clockwise detent position of the front–panel DISPLAY GAIN control, and CAL is the counterclockwise detent. The manual gain control applies a variable dc voltage to the Gain Control circuit. In the CAL detent, the voltage is set by an internal pot, R262. In the AUTO detent, the control voltage is the larger of the Horizontal or Vertical signals as determined by the comparator, U361. AGC & CRT DEFLECTION AMPLIFIERS <5> Gain Control (Vertical). U680 is a dual gain control circuit. This circuit rectifies a control signal and buffers it to attack capacitor C586 and decay capacitor C581. The dc level controls the transconductance of the DG block. In the gain control circuit, the DG circuit is used to control the ac feedback of an op–amp such that the output level stays constant for an input signal between about –20dB to about +8 dB, for the standard 760A. This range changes to about –25 dB to +5 dB for the 760D, and about –15 dB to +15 dB for the 760N. The attack and decay capacitors allow for fast gain reduction on signal peaks, and for slow recovery to keep low frequency signals from “pumping” the gain. The dc feedback is provided by R593, R685 and C588. R686 corrects for dc offset, allowing maximum output amplitude. R782 (offset adj) trims out pattern “bounce” that would result from the control signal appearing at the output. Low Pass Filter (Vertical). U894 is a four-pole low pass filter with a cutoff at about 34 kHz. R789 is adjusted for phase match between the two channels. Output Amplifier (Vertical). The output amplifier is a differential cascaded amplifier with R601 (VERT POSITION) adjusted for centering, and R786 adjusted for gain. Z–Axis Dimming. The Z–Axis circuit prevents CRT burn by turning off the CRT when the larger of the horizontal or vertical signals fall below a minimum level. The two signals are amplified, rectified, and filtered by U880, Q776, and C776. LEVEL INDICATORS The level indicator is a broad term that refers to all the circuitry associated with the LED bar graph. This circuitry is found on diagrams 2 and 3, and is based on the principle illustrated in Figure 6–2. 760A / 760D / 760N 6–3 Theory of Operation Input Signal Filter & Rectifier DAC Ramp – Comparator + Decoder / Driver LED Bar DAC ROM Lookup Table Clock Counter Figure 6–2: Simplified Level Indicator block diagram The LED segments of a 100–segment bar are scanned from top to bottom about 300 times per second by a down–counter and decoder. The counter simultaneously addresses a ROM lookup table which contains the amplitudes represented by each segment of the bar. A DAC converts this succession of amplitudes to an analog voltage ramp which is compared with the rectified and filtered input signal. When the ramp voltage becomes less than the input signal, the LED bar driver is enabled, lighting the LED segments. Hence, all segments representing amplitudes less than the signal level are lit. The ROM lookup table determines the shape and range of the scale. In addition to the normal scale range, the ROM also contains the magnified scale range actuated by the EXPAND SCALE button. Other scales for calibration and troubleshooting are selected by a special service switch, S340. Refer to SECTION 4, MAINTENANCE, for information on the settings and uses of S340. GRAPH DRIVERS <2> Dynamic Response Control (Left) Signal Peak Processor (Left) 6–4 The signal from the Input Amplifier is full–wave rectified in precision rectifier U445A & B, isolated by U445C & D, filtered with PPM time constants and buffered by U453. The attack time constant is such that a 10 ms sine wave burst will indicate 1 dB below true peak value. The fall time is 1.8 seconds for a 20 dB indicator drop. R347, R546 and R758 provide calibration adjustments for the LEFT, RIGHT and AUX indicators, respectively. Comparator. U635B compares the rectified signal with the DAC ramp and provides the bar enabling signal. This signal is passed through logic contained in a PAL, U438, which is part of the Peak Hold circuit description that follows. 760A / 760D / 760N Theory of Operation Peak Hold Circuit. The Peak Hold circuit is entirely digital. It stores peak values as follows. On each scan of the bar (300 times per second) the Comparator (described above) provides a CMP signal to PAL U438. The PAL then asserts BAR ENABLE, which allows the Bar Anode Driver to operate. The PAL also asserts DELAY to clock the counter state corresponding to the signal level into the latch, U428. On succeeding bar scans digital comparator U432 compares the latched number, at its Q inputs, with the counter state corresponding to the new signal level, at its P inputs. If the new state exceeds the old, the comparator signals the PAL through the GREATER line, and the PAL responds by again asserting DELAY, clocking the new peak value into the latch. Asserting DELAY also clocks a retriggerable monostable circuit, U436, which has a three–second period. If the monostable circuit reaches the end of this period without being retriggered it raises the TIMEOUT line high, to signal the PAL that it is time to cancel the peak. The PAL then asserts GATE, clearing the latch. In this manner, the latch keeps track of the counter state corresponding to the peak to be indicated. The circuit indicates peak values as follows. As the counter scans the bar, the comparator monitors the counter and notifies the PAL, via the EQUALS line, when the counter state matches the stored peak. The PAL then turns on the bar for two clock periods using the BAR ENABLE line, lighting two successive bar segments to indicate the value of the stored peak. If a stored peak persists for three seconds without being exceeded, it is canceled by the monostable circuit. If it is exceeded, the monostable circuit is retriggered to restart the time–out cycle. Peaks below –20 dB are prevented from being indicated by the PK BLK line, which is controlled by a data line from the scale–shaper ROM, U132 on diagram (3). A further description of the PAL signals for troubleshooting can be found in SECTION 4, MAINTENANCE. Bar Anode Driver (Left) Peak Hold On/Off 760A / 760D / 760N Since the LEDs comprising the bar are internally arranged in a 10–by–10 matrix, they are addressed by two BCD–to–decimal decoders; one driving the anodes and one driving the cathodes. U308 drives the anodes through buffers U208 and U223A. The cathode decoder/driver, U320, is located on the front–panel board (diagram 8). Gate U708 provides a way to turn the bar on and off by forcing the decoder into a non–BCD state when the BAR ENABLE line is high. This forces all the decoder outputs high, and the LED anodes low. The PEAK HOLD front–panel switch is debounced by an RC network and Schmitt gate U825A & B, which toggles flip–flop U823 for on/off control. 6–5 Theory of Operation BAR SCANNER/DRIVER & DAC <3> Master Clock U818 provides approximately 30 kHz clocking for the counter. Its output is a square wave whose rising edge defines clock phase 1. An inverter U825 provides clock phase 2, whose rising edge is delayed from phase 1 by one–half the clock period. Down Counter U828 and U623 form a two–digit BCD down–counter. The counter output is delayed half a clock period by latch U424 which in turn drives the bar decoders. Monostable circuit U715 provides intersegment blanking by disabling the latch outputs for a few microseconds after each clock pulse. Scale Shaper Lookup Table ROMs U127 and U137 form the look–up table, which determines the shape and range of the scale. Twelve data bits provide the needed resolution. In addition to the normal scale information, the ROM also contains the magnified scale actuated by the EXPAND SCALE button. Other scales for calibration and service are selected by a special service switch S340. Refer to SECTION 4, MAINTENANCE, for information on settings and uses. The ROM data outputs are latched by U132 and U142, to synchronize the output data, and applied to the DAC. DAC U146 is a 12–bit DAC with adjustments provided for gain (R252) and offset (R253). The DAC output range is from 0 V (all LED segments lit) when all DAC inputs are high, to +5 V (all LED segments off) with all DAC inputs low. LOW VOLTAGE POWER SUPPLY <6> The Low Voltage Power Supply converts the mains line voltage (90–250 VAC) to supply the power requirements of the instrument. The voltages supplied by the Low Voltage Power Supply are +40 V, "15 V, and +5 V. 6–6 760A / 760D / 760N Theory of Operation The Low Voltage Power Supply is called a Flyback Switcher. When switcher mosfet Q9 is turned on, its drain voltage drops to approximately 0 V. The current through the 350 mH primary winding of T3 begins ramping up. The voltages present at all secondaries is such that the rectifier diodes are reverse biased. Energy is being stored in the magnetic field of T3. When Q9 turns off, the drain voltage “flies back” in a positive direction. Current now flows in all of the secondary windings and supplies power. Line Rectifier and Filter The input line voltage is filtered by the rear-panel connector to reduce the electrical noise conducted into or out of the instrument. R89 limits the initial charging current through the rectifier diodes and C54. CR21, CR22, CR23, and CR24 form a bridge rectifier. C54 filters the 110 to 350 VDC rectifier output. L4 filters the switching noise produced by the switcher. R102 reduces the circulating current in the parallel circuit consisting of L4 and C44. DS4, R93, and R94 form a line voltage indicator. R91 and R92 charge C42. C42 provides power to U5 until the primary housekeeping winding provides power through CR17. Pulse Width Modulator U5 is a current-mode pulse width modulator (PWM). A current-mode PWM uses two feedback loops. The inner current feedback loop directly controls the switcher mosfet peak current. The outer voltage feedback loop programs the inner loop peak current trip point. 760A / 760D / 760N 6–7 Theory of Operation U5 pin 2 is the inverting input of an internal op-amp. The noninverting input is set to 2.5 V by an internal voltage reference. Current from the peak detector flows through R83 and R79. R84 provides a 100 mA offset. The voltage at U5 pin 1 will vary in order to maintain U5 pin 2 at 2.5 V. The voltage at U5 pin 1 is modified by an internal circuit and sets the trip point of the internal comparator. U5 pin 3 is the external input to the comparator. R88 and C52, connected to U5 pin 4, set the internal oscillator to 80 kHz. The circuit works as follows: The oscillator resets the latch and U5 pin 6 goes high, turning the switcher mosfet on. The current through the switcher mosfet increases, causing the voltage across R96 to increase. This voltage is divided by R87 and R101, and is applied to the comparator (pin 3). When the voltage at U5 pin 3 reaches the comparator trip point, the latch toggles and the switcher mosfet is turned off. This process is repeated at an 80 kHz rate. C58 increases the PWM noise immunity by rolling off the internal op-amp frequency response. R82 holds the switcher mosfet off as the circuit is powering up. R81 slows the turn-on of the switcher mosfet while CR27 speeds up the turn–off. Output Filters The three output windings supply four output voltages. Each output is rectified by a single diode and filtered by an LC pi filter. Error Amplifier The Error Amplifier regulates the +5 V output by feeding an error signal to the Pulse Width Modulator. VR1 is a 2.5 V shunt regulator containing an op-amp and a voltage reference. The +5 V is divided by R69 and R70 to provide 2.5 V to VR1, with fine adjustment provided by R99. C40 and R71 determine the gain and frequency response of VR1. VR4 controls overshoot of the +5 V at power up. R98 and CR26 provide a minimum operating current for VR1. R68 decouples C39 from VR1. Overvoltage protection for the +5V supply is provided by a crowbar circuit formed by Q11, VR3, R13, and R14. Feedback Transformer Driver and Peak Detector The 80 kHz sawtooth waveform at U3 pin 3 trips comparator U3. U3 pin 1 then feeds a trigger pulse to one-shot U4. U4 pin 13 outputs a 300 ns pulse to the 130 mA current source consisting of Q7 and Q8. When Q8 turns on, T2 pin 2 is pulled down until CR15 (Error Amplifier) is forward biased. The negative-going pulse at T2 pin 2 is peak detected by CR16 and C46. The DC voltage present at the anode of CR16 feeds the pulse width modulator and the Output Under-Voltage Shutdown circuit. CR29 resets T2 between pulses. Output Under-Voltage Shutdown 6–8 If the +5 V is below 4.9 V, the Error Amplifier will cause the Peak Detector output to go below 2.9 V. The output of comparator U3B will pull low and shut down pulse width modulator U5. C47 and R96 delay the operation of U3B long enough for the power supply to power up. If the +5 V does not reach 4.9 V 760A / 760D / 760N Theory of Operation within 50 ms of power up, U3B will shut down the switcher. The power supply will then cycle on and off every couple of seconds. HIGH VOLTAGE POWER SUPPLY <7> The High Voltage Power Supply generates the heater, cathode, control grid, focus anode, and post accelerating potentials required to display the outputs of the Vertical and Horizontal Output Amplifiers. HV Osc and Error Amp The High Voltage Power Supply is generated by a sine wave oscillator and step-up transformer. Q6 and T1 are the principal elements of an Armstrong oscillator running at about 22 kHz. Error Amplifier U2 regulates the +100 V output and keeps the High Voltage Power Supply constant under varying load conditions by controlling the base current to Q6. The +100 V output is regulated directly, while the High Voltage Power Supply is indirectly regulated through a current feedback circuit. R48, C16, R60, and R64 form the High Voltage Power Supply Current Feedback circuit. As the current from the High Voltage Power Supply is increased, the voltage to the + side of the Error Amplifier (U2) increases, which increases the base drive to Q6, the HV Osc. This current feedback compromises the regulation of the +100 V supply to keep the high voltage constant with varying intensities. C66 and Q10 are a Start Delay circuit that holds the Error Amplifier output low, through CR30, until C66 is charged. Delaying the start of the high voltage oscillator allows the Low Voltage Power Supply to start, unencumbered by the load from the high voltage oscillator. 760A / 760D / 760N 6–9 Theory of Operation Power Supply Outputs Focus Amplifier Grid Drive Circuit CR4 is the high voltage rectifier. Filter capacitors C3, C4, and C8 work with CR4 to provide –2530 V to the CRT cathode. U1 is a four-times multiplier providing +11 kV to the CRT anode. Q1 and Q2 form an operational amplifier that sets the voltage at the bottom of the focus divider. The front-panel FOCUS pot determines the voltage at the bottom of the focus divider. The Center Focus control, R11, is set for optimum beam focus, as viewed on the CRT, with the front-panel FOCUS control set to mid range. Once the Center Focus adjustment has been set, adjusting the front-panel FOCUS control changes the voltage at the bottom end of the divider and, consequently, the voltage on the CRT focus anode. The cathode of the CRT is at a –2750 V potential with the grid coupled to the Z-Axis Amplifier by the Grid Drive circuit. The grid is approximately 75 V negative with respect to the cathode. The 200 Vp-p sine wave present at the cathode of CR8 is input to the Grid Drive circuit where it is clipped for use as CRT control grid bias. The sine wave from the cathode of CR8 is coupled through R47 to a clipping circuit consisting of CR5 and CR6. Clipping level for the positive excursion of the sine wave is set by the CRT Bias adjustment, R58. The negative clipping level is set by the front-panel INTENSITY control through the Z-Axis Amplifier. The clipped sine wave is coupled through C11 to a rectifier made up of CR1 and CR3. The rectified, clipped sine wave is the CRT control grid bias voltage. C9 couples the blanking signal from the Z-Axis Amplifier to the CRT control grid. DS1 and DS2 limit the CRT grid to cathode voltage at instrument turn on or off. DS3 limits the CRT heater to cathode voltage. Z-Axis Amplifier This is an inverting amplifier with negative feedback. R22 is the feedback resistor while R7, R20, and R33 act to maintain the summing junction at +5 V. Without any Z-Axis input current, the amplifier output is approximately +10 V. Negative Z-Axis input current will cause the output to go positive. Q5 is a current amplifier feeding the output stage. Q3 and Q4 form a push-pull output stage. Q3 acts as a 2.7 mA constant current pull-up, while Q4 is the 6–10 760A / 760D / 760N Theory of Operation pull-down transistor. C6 speeds up the amplifier by coupling AC signals to the base of Q3. CR2 and R41 protect the amplifier during CRT arcing. CRT The pinout for the CRT is shown in Figure 6–3. 4 5 3 6 7 2 1 14 9 13 12 11 Pin 1 2 3 4 5 6 7 9 11 12 13 14 Description Filament (f) Cathode (k) GRID (g1) FOCUS (g3) ASTIG (g4) GEOM (g5) VERT PLATE (y2) VERT PLATE (y1) HORIZ PLATE (x2) 1st ANODE (g2) HORIZ PLATE (x1) Filament (f) Figure 6–3: Pinout of the CRT Socket 760A / 760D / 760N 6–11 Theory of Operation 6–12 760A / 760D / 760N Options Section 7 Options Introduction This section describes instrument options available for the 760–Series. CRT Options The standard instrument is shipped with a P31 (green) phosphor CRT installed. If Option 74 is ordered, the instrument is shipped with a P4 (white) phosphor CRT installed. The CRT part numbers are given at the end of the Replaceable Electrical Parts List. Power Cord Options Any of the power cord options shown in Table 7–1 can be ordered for the 760–Series. If no power cord option is ordered, instruments are shipped with a North American 125 V locking power cord and one replacement fuse. OPTIONS Table 7–1: Power Cord Options Option Description of power cord* A1 Universal Europe 220 V/16 A Locking A2 United Kingdom 240 V/15 A A3 Australian 240 V/10 A * All power cord options include a captive power plug and one replacement fuse Unless otherwise specified, power cords for use in North America are UL listed and CSA certified. Option cords are approved by at least one test house acceptable in the country to which the product is shipped. Power cord types are illustrated on the exploded view in SECTION 10 REPLACEABLE MECHANICAL PARTS. 760A / 760D / 760N 7–1 Options 7–2 760A / 760D / 760N Replaceable Electrical Parts Section 8 Replaceable Electrical Parts This section contains a list of the electrical components for the 760A, 760D, and 760N. Use this list to identify and order replacement parts. Parts Ordering Information Replacement parts are available through your local Tektronix field office or representative. Changes to Tektronix products are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest improvements. Therefore, when ordering parts, it is important to include the following information in your order: H Part number H Instrument type or model number H Instrument serial number H Instrument modification number, if applicable If you order a part that has been replaced with a different or improved part, your local Tektronix field office or representative will contact you concerning any change in part number. Change information, if any, is located at the rear of this manual. Using the Replaceable Electrical Parts List The tabular information in the Replaceable Electrical Parts List is arranged for quick retrieval. Understanding the structure and features of the list will help you find all of the information you need for ordering replacement parts. The following table describes each column of the electrical parts list. 760A / 760D / 760N 8–1 Replaceable Electrical Parts Parts List Column Descriptions Column Column Name Description 1 Component number The component number appears on diagrams and circuit board illustrations, located in the diagrams section. Assembly numbers are clearly marked on each diagram and circuit board illustration in the Diagrams section, and on the mechanical exploded views in the Replaceable Mechanical Parts list section. The component number is obtained by adding the assembly number prefix to the circuit number (see Component Number illustration following this table). The electrical parts list is arranged by assemblies in numerical sequence (A1, with its subassemblies and parts, precedes A2, with its subassemblies and parts). Chassis-mounted parts have no assembly number prefix, and they are located at the end of the electrical parts list. 2 Tektronix part number Use this part number when ordering replacement parts from Tektronix. 3 and 4 Serial number Column three indicates the serial number at which the part was first effective. Column four indicates the serial number at which the part was discontinued. No entry indicates the part is good for all serial numbers. 5 Name & description An item name is separated from the description by a colon (:). Because of space limitations, an item name may sometimes appear as incomplete. Use the U.S. Federal Catalog handbook H6-1 for further item name identification. 6 Mfr. code This indicates the code number of the actual manufacturer of the part. 7 Mfr. part number This indicates the actual manufacturer’s or vendor’s part number. Abbreviations Abbreviations conform to American National Standard ANSI Y1.1–1972. Component Number Component Number A23A2R1234 A23 Assembly number A2 R1234 Subassembly Number (optional) Circuit Number Read: Resistor 1234 (of Subassembly 2) of Assembly 23 List of Assemblies Chassis Parts Mfr. Code to Manufacturer Cross Index 8–2 A list of assemblies is located at the beginning of the electrical parts list. The assemblies are listed in numerical order. When a part’s complete component number is known, this list will identify the assembly in which the part is located. Chassis-mounted parts and cable assemblies are located at the end of the Replaceable Electrical Parts List. The table titled Manufacturers Cross Index shows codes, names, and addresses of manufacturers or vendors of components listed in the parts list. 760A / 760D / 760N Replaceable Electrical Parts Manufacturers Cross Index Mfr. Code Manufacturer Address City, State, Zip Code D5243 ROEDERSTEIN ERNST GMBH LUDMILLASTRASSE 23 8300 LANDSHUT GERMANY TK0435 LEWIS SCREW CO 4300 S RACINE AVE CHICAGO IL 60609–3320 TK0515 EVOX–RIFA INC 100 TRI–STATE INTERNATIONAL SUITE 290 LINCOLNSHIRE IL 60015 TK0891 MICONICS 1 FAIRCHILD AVE PLAINVIEW NY 11803 TK1155 QUALITY PLSTC INJECTION MOLDING 3910 INDUSTRIAL AVE COEUR D’ALENE ID 83814 TK1352 INTERFACE ELECTRONICS CORP 300 2–ND AVENUE WEST SEATTLE WA 98119 TK1547 MOORE ELECTRONICS INC (DIST) 19500 SW 90TH COURT PO BOX 1030 TUALATIN OR 97062 TK1617 CRAFT FACTORY PLASTICS 17145 SW ALEXANDER ALOHA, OR 97007 TK1727 PHILIPS NEDERLAND BV AFD ELONCO POSTBUS 90050 5600 PB EINDHOVEN THE NETHERLANDS TK1743 UNITRODE (UK) LTD 6 CRESSWELL PARK BLACKHEATH LONDON SE 3 9RD ENGLAND TK1913 WIMA THE INTER–TECHNICAL GROUP IND 2269 SAW MILL RIVER ROAD PO BOX 127 ELMSFORD NY 10523 TK2058 TDK CORPORATION OF AMERICA 1600 FEEHANVILLE DRIVE MOUNT PROSPECT, IL 60056 TK2073 TOKYO AMERICA INC 565 W GULF ROAD ARLINGTON HEIGHTS IL 60005 TK2469 UNITREK CORPORATION 3000 LEWIS & CLARK WAY SUITE #2 VANCOUVER WA 98601 0CVK3 ALLEGRO MICROSYSTEMS INC INTEGRATED CIRCUITS DIV 115 NE CUTOFF PO BOX 2036 WORCHESTER MA 01613–2036 0GV52 SCHAFFNER EMC INC 9–B FADEM ROAD SPRINGFIELD, NJ 07081 0H1N5 TOSHIBA MARCON ELECTRONICS AMERICA CORPORATION 998 FIRST EDGE DRIVE VERNON HILLS IL 60061 0JR03 ZMAN MAGNETICS INC 7633 S 180th KENT WA 98032 0JR04 TOSHIBA AMERICA INC ELECTRONICS COMPONENTS DIV 9775 TOLEDO WAY IRVINE CA 92718 0JR05 TRIQUEST CORP 3000 LEWIS AND CLARK HWY VANCOUVER WA 98661–2999 0J9R2 HARISON ELECTRIC CO LTD ASAHIMACHI 5–CHOME IMABARI EHIME JAPAN 0LUA3 PHILIPS COMPONENTS 100 PROVIDENCE PIKE SLATERSVILLE, RI 02876 00779 AMP INC 2800 FULLING MILL PO BOX 3608 HARRISBURG PA 17105 01295 TEXAS INSTRUMENTS INC SEMICONDUCTOR GROUP 13500 N CENTRAL EXPY PO BOX 655303 DALLAS TX 75262–5303 04222 AVX/KYOCERA DIV OF AVX CORP 19TH AVE SOUTH P O BOX 867 MYRTLE BEACH SC 29577 04713 MOTOROLA INC SEMICONDUCTOR PRODUCTS SECTOR 5005 E MCDOWELL RD PHOENIX AZ 85008–4229 09353 C AND K COMPONENTS INC 15 RIVERDALE AVE NEWTON MA 02158–1057 1CH66 PHILIPS SEMICONDUCTORS 811 E ARQUES AVENUE PO BOX 3409 SUNNYVALE CA 94088–3409 1ES66 MAXIM INTEGRATED PRODUCTS INC 120 SAN GABRIEL DRIVE SUNNYVALE CA 94086 760A / 760D / 760N 8–3 Replaceable Electrical Parts Manufacturers Cross Index (Cont.) Mfr. Code Manufacturer Address City, State, Zip Code 11236 CTS CORPORATION RESISTOR NETWORKS DIVISION 406 PARR ROAD BERNE IN 46711–9506 11502 IRC, INC BOONE NC 28607–1860 PO BOX 1860 12697 CLAROSTAT MFG CO INC 12055 ROJAS DRIVE SUITE K EL PASO, TX 79936 12954 MICROSEMI CORP – SCOTTSDALE 8700 E THOMAS RD P O BOX 1390 SCOTTSDALE AZ 85252 12969 MICROSEMI CORPORATION WATERTOWN DIVISION 530 PLEASANT STREET WATERTOWN MA 02172 13103 THERMALLOY CO INC 2021 W VALLEY VIEW LN PO BOX 810839 DALLAS TX 75381 13919 BURR–BROWN RESEARCH CORP 6730 S TUCSON BLVD P O BOX 11400 TUCSON AZ 85734 14552 MICROSEMI CORP 2830 S FAIRVIEW ST SANTA ANA CA 92704–5948 15454 KETEMA RODAN DIVISION 2900 BLUE STAR STREET ANAHEIM CA 92806–2591 18796 MURATA ELECTRONICS NORTH AMERICA INC. STATE COLLEGE OPERATIONS 1900 W COLLEGE AVE STATE COLLEGE PA 16801–2723 19701 PHILIPS COMPONENTS DISCRETE PRODUCTS DIV RESISTIVE PRODUCTS FACILITY AIRPORT ROAD PO BOX 760 MINERAL WELLS TX 76067–0760 2N936 VISHAY ELECTRONIC COMPONENTS 1122 23RD STREET COLUMBUS, NE 68601 22526 BERG ELECTRONICS INC (DUPONT) 857 OLD TRAIL RD ETTERS PA 17319 24546 DALE ELECTRONICS A VISHAY INTERTECHNOLOGY INC CO 550 HIGH ST BRADFORD PA 16701–3737 26364 COMPONENTS CORP 6 KINSEY PLACE DENVILLE NJ 07834–2611 27014 NATIONAL SEMICONDUCTOR CORP 2900 SEMICONDUCTOR DR SANTA CLARA CA 95051–0606 31918 ITT SCHADOW INC 8081 WALLACE RD EDEN PRAIRE MN 55344–2224 32997 BOURNS INC TRIMPOT DIV 1200 COLUMBIA AVE RIVERSIDE CA 92507–2114 34371 HARRIS SEMICONDUCTOR SEMICONDUCTOR SECTOR MS 58–71 PO BOX 883 MELBOURNE, FL 32902–0883 48726 UNITRODE INTEGRATED CIRCUITS CORP (UICC) 7 CONTINENTAL BLVD PO BOX 399 MERRIMACK NH 03054–0399 50139 ALLEN–BRADLEY CO ELECTRONIC COMPONENTS 1414 ALLEN BRADLEY DR EL PASO TX 79936 50434 HEWLETT–PACKARD CO OPTOELECTRONICS DIV 370 W TRIMBLE RD SAN JOSE CA 95131–1008 51406 MURATA ELECTRONICS NORTH AMERICA INC HEADQUARTERS AND GEORGIA OPERATIONS 2200 LAKE PARK DR SMYRNA GA 30080 53387 3M COMPANY ELECTRONIC PRODUCTS DIV 3M AUSTIN CENTER AUSTIN TX 78769–2963 55680 NICHICON /AMERICA/ CORP 927 E STATE PKY SCHAUMBURG IL 60195–4526 8–4 760A / 760D / 760N Replaceable Electrical Parts Manufacturers Cross Index (Cont.) Mfr. Code Manufacturer Address City, State, Zip Code 37942 NORTH AMERICAN CAPACITOR CO INDIANAPOLIS ROAD, HWY 240 PO BOX 240 GREEN CASTLE, IN 46135 56845 DALE ELECTRONICS INC 2300 RIVERSIDE BLVD PO BOX 74 NORFOLK NE 68701–2242 57668 ROHM CORPORATION 15375 BARRANCA PARKWAY SUITE B207 IRVINE CA 92718 57856 TELTEC INC 7890 12TH AVE SOUTH MINNEAPOLIS MN 55425 61935 SCHURTER INC 1016 CLEGG COURT PETALUMA CA 94952–1152 62643 UNITED CHEMICON INC 9801 W HIGGINS ST SUITE 430 ROSEMONT, IL 60018–4771 64155 LINEAR TECHNOLOGY CORP 1630 MCCARTHY BLVD MILPITAS CA 95035–7417 64537 KDI/TRIANGLE ELECTRONICS 60 S JEFFERSON ROAD WHIPPANY, NJ 07981 71400 BUSSMANN DIV OF COOPER INDUSTRIES INC 114 OLD STATE RD PO BOX 14460 ST LOUIS MO 63178 71590 CGE SWITCHES – USA PO BOX 1587 FORT DODGE IA 50501 73743 FISCHER SPECIAL MFG CO 111 INDUSTRIAL RD COLD SPRING KY 41076–9749 75042 IRC ELECTRONIC COMPONENTS PHILADELPHIA DIV TRW FIXED RESISTORS 401 N BROAD ST PHILADELPHIA PA 19108–1001 75498 MULTICOMP INC 3005 SW 154TH TERRACE #3 BEAVERTON OR 97006 76493 BELL INDUSTRIES INC JW MILLER DIV 306 E ALONDRA BLVD PO BOX 2859 GARDENA, CA 90247–1059 80009 TEKTRONIX INC 14150 SW KARL BRAUN DR PO BOX 500 BEAVERTON OR 97077–0001 82389 SWITCHCRAFT INC SUB OF RAYTHEON CO 5555 N ELSTRON AVE CHICAGO IL 60630–1314 83701 ELECTRONIC DEVICES INC 21 GREY OAKS AVE YONKERS NY 10710–3205 84411 AMERICAN SHIZUKI CORP OGALLALA OPERATIONS 301 WEST O ST OGALLALA NE 69153–1844 86928 SEASTROM MFG CO INC 456 SEASTROM STREET TWIN FALLS, ID 83301 8X345 NORTHWEST SPRING MFG CO 5858 WILLOW LANE LAKE OSWEGO, OR 97035 91637 DALE ELECTRONICS INC 2064 12TH AVE PO BOX 609 COLUMBUS NE 68601–3632 9M860 ESAM INC PO BOX 376 GRANTS PASS, OR 97526 TK2073 TOKYO COSMOS AMERICA INC 1177 E TOWER ROAD SCHAUMBURG, IL 60173 760A / 760D / 760N 8–5 Replaceable Electrical Parts Replaceable Electrical Parts List Component Number Tektronix Part Number A1 Serial no. effective Serial No. Discont’d Name & Description Mfr. Code Mfr. Part Number 671–2890–10 CIRCUIT BD ASSY:POWER SUPPLY 80009 671289010 A2 670–9532–01 CIRCUIT BD ASSY:FRONT PANEL 80009 670953201 A3 671–2383–04 B050000 CIRCUIT BD ASSY:MAIN (760A ONLY) 80009 671238304 671–2383–05 B052829 CIRCUIT BD ASSY:MAIN (760A ONLY) 80009 671238305 A3 671–1469–04 B030000 CIRCUIT BD ASSY:MAIN (760D ONLY) 80009 671146904 A3 671–1469–05 B030175 CIRCUIT BD ASSY:MAIN (760D ONLY) 80009 671146905 A3 671–1472–04 B030000 CIRCUIT BD ASSY:MAIN (760N ONLY) 80009 671147204 A3 671–1472–05 B030210 CIRCUIT BD ASSY:MAIN (760N ONLY) 80009 671147205 A10 671–3637–00 CIRCUIT BD ASSY:CRT SOCKET BOARD 80009 671363700 B052828 B030174 B030209 A1 671–2890–10 CIRCUIT BD ASSY:POWER SUPPLY 80009 671289010 A1C1 281–0775–01 CAP,FXD,CERAMIC:MCL;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A1C2 283–0021–00 CAP,FXD,CER DI:0.001UF,20%,5000V TK2058 TCK45YS3H102M–A A1C3 283–0261–00 CAP,FXD,CER DI:0.01UF,20%,4000V 18796 DHR28Z5U103M4KV A1C4 283–0261–00 CAP,FXD,CER DI:0.01UF,20%,4000V 18796 DHR28Z5U103M4KV A1C5 285–1341–01 CAP,FXD,PLSTC:MTLZD FILM;0.1UF,20%,100V,POLYESTER TK1913 MKS 2 0.1UF 20% A1C6 281–0771–00 CAP,FXD,CER DI:2200PF,20%,200V 04222 A1C7 285–1470–00 CAP,FXD,PLSTC:MTLZD FILM;330PF, 1600VDC/500VAC,POLYPROPYLENE,11 X18 TK1913 FKP1 330/1600/5 A1C8 283–0261–00 CAP,FXD,CER DI:0.01UF,20%,4000V 18796 DHR28Z5U103M4KV A1C9 283–0261–00 CAP,FXD,CER DI:0.01UF,20%,4000V 18796 DHR28Z5U103M4KV A1C10 281–0563–00 CAP,FXD,CERAMIC:MLC;0.47UF,20%,50V,0.150 X0.290 04222 SA305E474MAA A1C11 283–0021–00 CAP,FXD,CER DI:0.001UF,20%,5000V TK2058 TCK45YS3H102M–A A1C12 281–0707–00 CAP,FXD,CER DI:15000PF,10%,200V 04222 MA302C153KAA A1C13 281–0707–00 CAP,FXD,CER DI:15000PF,10%,200V 04222 MA302C153KAA A1C14 281–0707–00 CAP,FXD,CER DI:15000PF,10%,200V 04222 MA302C153KAA A1C15 285–1341–01 CAP,FXD,PLSTC:MTLZD FILM;0.1UF,20%,100V,POLYESTER TK1913 MKS 2 0.1UF 20% A1C16 290–1311–00 CAP,FXD,ALUM:10UF,20%,50V,ESR=1.4 OHM(100KHZ,20C),5X11MM,105C,5000HRS 55680 A1C17 285–1341–01 CAP,FXD,PLSTC:MTLZD FILM;0.1UF,20%,100V,POLYESTER TK1913 MKS 2 0.1UF 20% A1C18 281–0775–01 CAP,FXD,CERAMIC:MCL;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A1C19 290–1310–00 CAP,FXD,ALUM:10UF,20%,160V,ESR=24.9 OHM (120HZ,20C),LS=0.200 INCH,13X20MM,105C,5000HRS 0H1N5 CEJSM2C100M A1C20 281–0707–00 CAP,FXD,CER DI:15000PF,10%,200V 04222 MA302C153KAA A1C21 281–0707–00 CAP,FXD,CER DI:15000PF,10%,200V 04222 MA302C153KAA 8–6 SA102C222MAA UPL1H100MDH1TD 760A / 760D / 760N Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A1C22 281–0563–00 A1C23 285–1328–00 A1C24 Mfr. Code Mfr. Part Number CAP,FXD,CERAMIC:MLC;0.47UF,20%,50V,0.150 X0.290 04222 SA305E474MAA CAP,FXD,PLSTC:MTLZD FILM;0.01UF,5%,2000V,POLYPROPYLENE,1.25X.95 TK1913 FKP1 .01/2000/5 290–1310–00 CAP,FXD,ALUM:10UF,20%,160V,ESR=24.9 OHM (120HZ,20C),LS=0.200 INCH,13X20MM,105C,5000HRS 0H1N5 CEJSM2C100M A1C25 281–0775–01 CAP,FXD,CERAMIC:MCL;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A1C27 281–0775–01 CAP,FXD,CERAMIC:MCL;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A1C28 281–0775–01 CAP,FXD,CERAMIC:MCL;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A1C29 290–1267–00 CAP,FXD,ALUM:560UF,20%,50V,ESR=0.40 OHM (100KHZ,20C) 0H1N5 CEEFM1H561M7 A1C30 290–1267–00 CAP,FXD,ALUM:560UF,20%,50V,ESR=0.40 OHM (100KHZ,20C) 0H1N5 CEEFM1H561M7 A1C31 290–1267–00 CAP,FXD,ALUM:560UF,20%,50V,ESR=0.40 OHM (100KHZ,20C) 0H1N5 CEEFM1H561M7 A1C32 290–1267–00 CAP,FXD,ALUM:560UF,20%,50V,ESR=0.40 OHM (100KHZ,20C) 0H1N5 CEEFM1H561M7 A1C33 290–1310–00 CAP,FXD,ALUM:10UF,20%,160V,ESR=24.9 OHM (120HZ,20C),LS=0.200 INCH,13X20MM,105C,5000HRS 0H1N5 CEJSM2C100M A1C34 290–1310–00 CAP,FXD,ALUM:10UF,20%,160V,ESR=24.9 OHM (120HZ,20C),LS=0.200 INCH,13X20MM,105C,5000HRS 0H1N5 CEJSM2C100M A1C35 290–1267–00 CAP,FXD,ALUM:560UF,20%,50V,ESR=0.40 OHM (100KHZ,20C) 0H1N5 CEEFM1H561M7 A1C36 290–1267–00 CAP,FXD,ALUM:560UF,20%,50V,ESR=0.40 OHM (100KHZ,20C) 0H1N5 CEEFM1H561M7 A1C37 290–1267–00 CAP,FXD,ALUM:560UF,20%,50V,ESR=0.40 OHM (100KHZ,20C) 0H1N5 CEEFM1H561M7 A1C38 290–1267–00 CAP,FXD,ALUM:560UF,20%,50V,ESR=0.40 OHM (100KHZ,20C) 0H1N5 CEEFM1H561M7 A1C39 281–0775–01 CAP,FXD,CERAMIC:MCL;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A1C40 281–0772–00 CAP,FXD,CERAMIC:MLC;4700PF,10%,100V,0.100 X 04222 SA101C472KAA A1C41 281–0563–00 CAP,FXD,CERAMIC:MLC;0.47UF,20%,50V,0.150 X 0.290 04222 SA305E474MAA A1C42 290–1267–00 CAP,FXD,ALUM:560UF,20%,50V,ESR=0.40 OHM (100KHZ,20C) 0H1N5 CEEFM1H561M7 A1C43 281–0563–00 CAP,FXD,CERAMIC:MLC;0.47UF,20%,50V,0.150 X 0.290 04222 SA305E474MAA A1C44 285–1331–00 CAP,FXD,MTLZD:0.47UF,5%,400V TK1913 MKS4 .47/400/5 A1C45 281–0563–00 CAP,FXD,CERAMIC:MLC;0.47UF,20%,50V,0.150 X 0.290 04222 A1C46 281–0773–00 CAP,FXD,CERAMIC:MLC;0.01UF,10%,100V TK1743 CGB103KEX A1C47 281–0563–00 CAP,FXD,CERAMIC:MLC;0.47UF,20%,50V,0.150 X 0.290 04222 SA305E474MAA A1C48 281–0809–00 CAP,FXD,CERAMIC:MLC;200 PF,5%,100V,0.100 X 0.170 04222 SA101A201JAA A1C49 281–0775–01 CAP,FXD,CERAMIC:MCL;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A1C50 281–0563–00 CAP,FXD,CERAMIC:MLC;0.47UF,20%,50V,0.150 X 0.290 04222 SA305E474MAA A1C51 281–0773–00 CAP,FXD,CERAMIC:MLC;0.01UF,10%,100V TK1743 CGB103KEX A1C52 281–0773–00 CAP,FXD,CERAMIC:MLC;0.01UF,10%,100V TK1743 CGB103KEX A1C53 285–1437–00 CAP,FXD,PLSTC:100PF,5%,1600VDC/500VACSAFETY CONT TK1913 FKP1/100/1600/5 A1C54 290–1275–00 CAP,FXD,ALUM:330UF,20%,400V,35X35MM,105C 55680 A1C56 285–1246–00 CAP,FXD,PPR DI:0.022UF,20%,250VAC TK0515 PME 289 MB 5220 A1C57 285–1222–00 CAP,FXD,PLSTC:0.068UF,20%,250V TK0515 PME 271 M 568 A1C58 281–0809–00 CAP,FXD,CERAMIC:MLC;200 PF,5%,100V,0.100 X 0.170 04222 SA101A201JAA A1C59 281–0775–01 CAP,FXD,CERAMIC:MCL;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A1C60 281–0775–01 CAP,FXD,CERAMIC:MCL;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A1C61 281–0768–00 CAP,FXD,CER DI:470PF,20%,100V 04222 SA101A471KAA 760A / 760D / 760N Serial no. effective Serial No. Discont’d Name & Description SA305E474MAA LGQ2G331MHSC 8–7 Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A1C65 281–1301–01 A1C66 290–1311–00 A1CR1 A1CR2 Serial no. effective Serial No. Discont’d Mfr. Code Mfr. Part Number CAP,FXD,CERAMIC:MCL;0.47UF,10%,50V 37942 185/0.47/K/50/AB/B CAP,FXD,ALUM:10UF,20%,50V,ESR=1.4 OHM (100KHZ,20C),5X11MM,105C,5000HRS 55680 UPL1H100MDH1TD 152–0061–00 DIODE,SIG:200V,0.1A,700NS,4.0PF 12969 PV122 152–0061–00 DIODE,SIG:200V,0.1A,700NS,4.0PF 12969 PV122 A1CR3 152–0061–00 DIODE,SIG:200V,0.1A,700NS,4.0PF 12969 PV122 A1CR4 152–0409–00 DIODE,RECT:FAST RCVRY;12KV,10MA,250NS 83701 CRVT150 A1CR5 152–0061–00 DIODE,SIG:200V,0.1A,700NS,4.0PF 12969 PV122 A1CR6 152–0061–00 DIODE,SIG:200V,0.1A,700NS,4.0PF 12969 PV122 A1CR7 152–0400–00 DIODE,RECT:FAST RCVRY;400V,1A,200NS 0LUA3 1N4936 A1CR8 152–0400–00 DIODE,RECT:FAST RCVRY;400V,1A,200NS 0LUA3 1N4936 A1CR9 152–0400–00 DIODE,RECT:FAST RCVRY;400V,1A,200NS 0LUA3 1N4936 A1CR10 152–0400–00 DIODE,RECT:FAST RCVRY;400V,1A,200NS 0LUA3 1N4936 A1CR11 152–0400–00 DIODE,RECT:FAST RCVRY;400V,1A,200NS 0LUA3 1N4936 A1CR12 152–0400–00 DIODE,RECT:FAST RCVRY;400V,1A,200NS 0LUA3 1N4936 A1CR13 152–1191–00 DIODE,RECT:SCHTKY;100V,10A,150A IFSM,800MVF AT 10A 04713 MBR10100 A1CR14 152–0400–00 DIODE,RECT:FAST RCVRY;400V,1A,200NS 0LUA3 1N4936 A1CR15 152–0400–00 DIODE,RECT:FAST RCVRY;400V,1A,200NS 0LUA3 1N4936 A1CR16 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A1CR17 152–0400–00 DIODE,RECT:FAST RCVRY;400V,1A,200NS 0LUA3 1N4936 A1CR19 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A1CR20 152–0897–00 DIODE,RECT:FAST RCVRY;1000V,1.5A,300NS,SOFT RCVRY 0LUA3 BYV96E A1CR21 152–1165–00 DIODE,RECT:ULTRA FAST;600V,4A,50NS 04713 MUR460RL A1CR22 152–1165–00 DIODE,RECT:ULTRA FAST;600V,4A,50NS 04713 MUR460RL A1CR23 152–1165–00 DIODE,RECT:ULTRA FAST;600V,4A,50NS 04713 MUR460RL A1CR24 152–1165–00 DIODE,RECT:ULTRA FAST;600V,4A,50NS 04713 MUR460RL A1CR25 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A1CR26 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A1CR27 152–0400–00 DIODE,RECT:FAST RCVRY;400V,1A,200NS 0LUA3 1N4936 A1CR29 152–0400–00 DIODE,RECT:FAST RCVRY;400V,1A,200NS 0LUA3 1N4936 A1CR30 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A1CR31 152–0400–00 DIODE,RECT:FAST RCVRY;400V,1A,200NS 0LUA3 1N4936 A1DS1 150–0050–00 LAMP,GLOW:135V MAX,1.9MA,C2A–T,WIRE LEAD 0J9R2 NE–2Q–11R–T A1DS2 150–0050–00 LAMP,GLOW:135V MAX,1.9MA,C2A–T,WIRE LEAD 0J9R2 NE–2Q–11R–T A1DS3 150–0050–00 LAMP,GLOW:135V MAX,1.9MA,C2A–T,WIRE LEAD 0J9R2 NE–2Q–11R–T A1DS4 150–0050–00 LAMP,GLOW:135V MAX,1.9MA,C2A–T,WIRE LEAD 0J9R2 NE–2Q–11R–T A1F1 159–0021–00 FUSE,CARTRIDGE:3AG,2A,250V,FAST BLOW 71400 AGC–2 Name & Description *MOUNTING PARTS* 200–2264–00 CAP,FUSEHOLDER:3AG FUSES 61935 FEK 031 1666 204–0906–00 BODY,FUSEHOLDER:3AG & 5 X 20MM FUSES 61935 TYPE FAU 031.35 *END MOUNTING PARTS* 8–8 760A / 760D / 760N Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A1J1 131–5338–00 A1J2 Serial no. effective Serial No. Discont’d Mfr. Code Mfr. Part Number CONN,HDR:PCB/WIREWRAP;MALE,STR,1 X 7,0.15CTR, 0.230 MLG X 0.285 TAIL,30 GOLD,SIDE BYSIDE STACKABLE 22526 65561–107 131–4794–00 CONN,HDR:PCB;MALE,STR,1 X 2,0.1 CTR,0.235MLG X 0.112 TAIL,30GOLD,0.035 DIA PCB,SAFETY CONTROLLED 53387 2402–6112 UB A1J3 131–5337–00 CONN,HDR:PCB/WIREWRAP;MALE,STR,1 X 4,0.150 22526 65561–104 A1J4 131–3392–00 CONN,HDR:PCB;MALE,STR,1 X 10,0.1 CTR,0.230 00779 1–102844–1 A1J6 119–1946–00 FILTER,RFI:1A,250V,400HZ W/PC TERMINAL 0GV52 FX326–1/02–K–D– A1L1 108–1412–00 INDUCTOR,FXD:POWER;4.7UH,20%,I<3.7A,RDC<0.017 OHM,Q>10,SRF>30MHZ,BOBBIN TK2058 TSL0807–4R7M3R0 A1L2 108–1412–00 INDUCTOR,FXD:POWER;4.7UH,20%,I<3.7A,RDC<0.017 OHM,Q>10,SRF>30MHZ,BOBBIN TK2058 TSL0807–4R7M3R0 A1L3 108–1412–00 INDUCTOR,FXD:POWER;4.7UH,20%,I<3.7A,RDC<0.017 OHM,Q>10,SRF>30MHZ,BOBBIN TK2058 TSL0807–4R7M3R0 A1L4 108–0205–00 INDUCTOR,FXD:POWER;1MH,5%,IDC<400 MA,RDC<2.12 OHM,Q>[email protected] 76493 A1Q1 151–0749–00 XSTR,SIG:BIPOLAR,PNP;400V,500MA,50MHZ,AMPL 04713 MPSA94 A1Q2 151–0190–00 XSTR,SIG:BIPOLAR,NPN;40V,200MA,300MHZ,AMPL 0JR04 2N3904 A1Q3 151–0350–03 XSTR,SIG:BIPOLAR,PNP;150V,600MA,100MHZ,AMPL 04713 2N5401RLRP A1Q4 151–0347–02 XSTR,SIG:BIPOLAR,NPN;160V,600MA,100MHZ,AMPL 04713 2N5551RLRP A1Q5 151–0350–03 XSTR,SIG:BIPOLAR,PNP;150V,600MA,100MHZ,AMPL 04713 2N5401RLRP A1Q6 151–0476–00 XSTR,PWR:BIPOLAR,NPN;100V,3.0A,3.0MHZ,AMPL 04713 TIP31C 13103 6043PB Name & Description 8209 *ATTACHED PARTS* 214–3848–00 HEAT SINK,SEMIC:XSTR,TO–220;ALUM,CLIP–ON,BLK ANDZ *END ATTACHED PARTS* A1Q7 151–0190–00 XSTR,SIG:BIPOLAR,NPN;40V,200MA,300MHZ,AMPL 0JR04 2N3904 A1Q8 151–0190–00 XSTR,SIG:BIPOLAR,NPN;40V,200MA,300MHZ,AMPL 0JR04 2N3904 A1Q9 151–1286–00 XSTR,PWR:MOS,N–CH;800V,4.0A,3.0 OHM 0LUA3 BUK456–800A 210–0406–00 NUT,PLAIN,HEX:4–40 X 0.188,BRS CD PL 73743 12161–50 211–0008–00 SCREW,MACHINE:4–40 X 0.25,PNH,STL TK0435 ORDER BY DESC 214–3841–00 HEAT SINK,SEMIC:XSTR,TO–220;VERTICALMOUNT,(2)SOLDERABLE TABS,ALUM,BLACK ANODIZE 13103 6021PB A1Q10 151–0350–03 XSTR,SIG:BIPOLAR,PNP;150V,600MA,100MHZ,AMPL 04713 2N5401RLRP A1Q11 151–0528–00 THYRISTOR,PWR:BIPOLAR,SCR;50V,16A RMS,PHASE 04713 2N6400 A1R1 303–0155–00 RES,FXD,CMPSN:1.5M OHM,5%,1W 50139 GB1555 A1R2 301–0225–02 RES,FXD,CMPSN:2.2M OHM,5%,0.5W 50139 EB2255 A1R3 303–0155–00 RES,FXD,CMPSN:1.5M OHM,5%,1W 50139 GB1555 A1R4 303–0155–00 RES,FXD,CMPSN:1.5M OHM,5%,1W 50139 GB1555 A1R5 303–0155–00 RES,FXD,CMPSN:1.5M OHM,5%,1W 50139 GB1555 A1R7 322–3385–00 RES,FXD:METAL FILM;100K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10002F A1R8 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A1R11 311–1256–00 RES,VAR,TRMR:CERMET;2.5M OHM,10%,0.5W,0.375 32997 3386F–1–255 *ATTACHED PARTS* *END ATTACHED PARTS* 760A / 760D / 760N 8–9 Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A1R12 A1R13 Name & Description Mfr. Code Mfr. Part Number 315–0471–03 RES,FXD,CMPSN:470 OHM,5%,0.25W 50139 CB4715 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A1R14 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A1R20 322–3248–00 RES,FXD,FILM:3.74K OHM,1%,0.2W,TC=T0TAPED & 91637 CCF50G37400F A1R22 322–3329–00 RES,FXD,FILM:26.1K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G37401F A1R24 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A1R25 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A1R26 322–3452–00 RES,FXD,FILM:499K OHM,1%,0.2W,TC=TOMI,SMALL 91637 CCF50–2–G4993FT A1R27 322–3300–02 RES,FXD,FILM:13K OHM,0.5%,0.2W,TC=T2 91637 CCF501D13001D A1R28 322–3344–00 RES,FXD,FILM:37.4K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G37401F A1R29 315–0470–03 RES,FXD,CMPSN:47 OHM,5%,0.25W 50139 CB4705 A1R30 315–0103–03 RES,FXD,CMPSN:10K OHM,5%,0.25W 50139 CB1035 A1R31 322–3385–00 RES,FXD:METAL FILM;100K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10002F A1R32 322–3452–00 RES,FXD,FILM:499K OHM,1%,0.2W,TC=TOMI,SMALL 91637 CCF50–2–G4993FT A1R33 322–3300–02 RES,FXD,FILM:13K OHM,0.5%,0.2W,TC=T2 91637 CCF501D13001D A1R34 322–3222–00 RES,FXD:METAL FILM;2K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G20000F A1R35 322–3162–00 RES,FXD:METAL FILM;475 OHM,1%,0.2W,TC=100 PPM 91637 CCF50G475R0F A1R36 322–3222–00 RES,FXD:METAL FILM;2K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G20000F A1R37 322–3034–00 RES,FXD:METAL FILM;22.1 OHM,1%,0.2W,TC=100 PPM 91637 CCF50–2–G22R10F A1R38 315–0226–01 RES,FXD,CMPSN:22 M OHM,5%,0.25WALLEN BRADLEY ONLY 50139 CB2265 A1R39 315–0471–03 RES,FXD,CMPSN:470 OHM,5%,0.25W 50139 CB4715 A1R40 315–0103–03 RES,FXD,CMPSN:10K OHM,5%,0.25W 50139 CB1035 A1R41 322–3121–00 RES,FXD:METAL FILM;178 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G178R0F A1R42 322–3402–00 RES,FXD:METAL FILM;150K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G15002F A1R43 315–0471–03 RES,FXD,CMPSN:470 OHM,5%,0.25W 50139 CB4715 A1R44 315–0471–03 RES,FXD,CMPSN:470 OHM,5%,0.25W 50139 CB4715 A1R45 311–2239–00 RES,VAR,TRMR:CERMET;100K OHM,20%,0.5W,0.197 TK2073 GF06UT2 104 M L A1R46 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A1R47 322–3385–00 RES,FXD:METAL FILM;100K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10002F A1R48 322–3239–00 RES,FXD,FILM:3.01K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G30100F A1R49 311–2239–00 RES,VAR,TRMR:CERMET;20K OHM,20%,0.5W,0.197 TK2073 GF06UT2 203 M L20 A1R50 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A1R51 322–3260–00 RES,FXD,FILM:4.99K OHM,1%,0.2W,TC=T0TAPED & 91637 CCF501G49900F A1R52 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A1R53 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A1R54 322–3260–00 RES,FXD,FILM:4.99K OHM,1%,0.2W,TC=T0TAPED & 91637 CCF501G49900F A1R55 322–3322–00 RES,FXD:METAL FILM;22.1K OHM,1%,0.2W,TC=100 91637 CCF501G22101F A1R56 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A1R57 322–3034–00 RES,FXD:METAL FILM;22.1 OHM,1%,0.2W,TC=100 PPM 91637 CCF50–2–G22R10F A1R58 311–2239–00 RES,VAR,TRMR:CERMET;100K OHM,20%,0.5W,0.197 TK2073 GF06UT2 104 M L 8–10 Serial no. effective Serial No. Discont’d 760A / 760D / 760N Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A1R59 A1R60 Name & Description Mfr. Code Mfr. Part Number 322–3485–07 RES,FXD,FILM:5K OHM,0.1%,0.2W,TC=T9,SMALL BODY 91637 CCF501C50000B 322–3268–00 RES,FXD,FILM:6.04K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G60400F A1R61 322–3034–00 RES,FXD:METAL FILM;22.1 OHM,1%,0.2W,TC=100 PPM 91637 CCF50–2–G22R10F A1R62 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A1R63 322–3222–00 RES,FXD:METAL FILM;2K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G20000F A1R64 322–3385–00 RES,FXD:METAL FILM;100K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10002F A1R65 322–3385–00 RES,FXD:METAL FILM;100K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10002F A1R66 322–3452–00 RES,FXD,FILM:499K OHM,1%,0.2W,TC=TOMI,SMALL 91637 CCF50–2–G4993FT A1R67 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A1R68 322–3121–00 RES,FXD:METAL FILM;178 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G178R0F A1R69 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A1R70 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A1R71 322–3418–00 RES,FXD:METAL FILM;221K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G22102F A1R72 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A1R73 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A1R74 322–3260–00 RES,FXD,FILM:4.99K OHM,1%,0.2W,TC=T0TAPED & 91637 CCF501G49900F A1R75 322–3260–00 RES,FXD,FILM:4.99K OHM,1%,0.2W,TC=T0TAPED & 91637 CCF501G49900F A1R76 322–3248–00 RES,FXD,FILM:3.74K OHM,1%,0.2W,TC=T0TAPED & 91637 CCF50G37400F A1R77 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A1R78 322–3248–00 RES,FXD,FILM:3.74K OHM,1%,0.2W,TC=T0TAPED & 91637 CCF50G37400F A1R79 322–3356–00 RES,FXD,FILM:49.9K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G49901F A1R80 322–3222–00 RES,FXD:METAL FILM;2K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G20000F A1R81 322–3121–00 RES,FXD:METAL FILM;178 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G178R0F A1R82 322–3260–00 RES,FXD,FILM:4.99K OHM,1%,0.2W,TC=T0TAPED & 91637 CCF501G49900F A1R83 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A1R84 322–3315–00 RES,FXD,FILM:18.7K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G18701F A1R85 322–3385–00 RES,FXD:METAL FILM;100K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10002F A1R86 308–0793–00 RES,FXD:0.51 OHM,5%,1WTC=150PPM/DEG C,MI 75042 BW20 .51OHM 5PE A1R87 322–3034–00 RES,FXD:METAL FILM;22.1 OHM,1%,0.2W,TC=100 PPM 91637 CCF50–2–G22R10F A1R88 322–3222–00 RES,FXD:METAL FILM;2K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G20000F A1R89 307–0746–00 RES,THERMAL:5 OHM,10%,7A/DEG C 15454 SG200–S STRAI A1R90 305–0242–00 RES,FXD,CMPSN:2.4K OHM,5%,2W 11502 GF–3 OR GS–3 24 A1R91 306–0104–00 RES,FXD,CMPSN:100K OHM,10%,2W 24546 FP42 OR FP2 100 A1R92 306–0104–00 RES,FXD,CMPSN:100K OHM,10%,2W 24546 FP42 OR FP2 100 A1R93 322–3402–00 RES,FXD:METAL FILM;150K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G15002F A1R94 322–3402–00 RES,FXD:METAL FILM;150K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G15002F A1R95 322–3256–00 RES,FXD,FILM:4.53K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF50–2–G4531FT A1R96 322–3356–00 RES,FXD,FILM:49.9K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G49901F A1R97 322–3222–00 RES,FXD:METAL FILM;2K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G20000F A1R98 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B 760A / 760D / 760N Serial no. effective Serial No. Discont’d 8–11 Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A1R99 A1R101 Name & Description Mfr. Code 311–2239–00 RES,VAR,TRMR:CERMET;100K OHM,20%,0.5W,0.197 TK2073 GF06UT2 104 M L 322–3068–00 RES,FXD:METAL FILM;49.9 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G49R90F A1R102 308–0290–00 RES,FXD,WW:8 OHM,5%,5W 91637 CW52–8R000J T/R A1R103 322–3452–00 RES,FXD,FILM:499K OHM,1%,0.2W,TC=TOMI,SMALL 91637 CCF50–2–G4993FT A1T1 120–1695–00 TRANSFORMER,PWR:HIGH VOLTAGE,FEEDBACK 3V, RESONANT 231V, 100V 1MA,2750V 3.3MA, 6.3V 86MA 75498 120–1695–00 A1T2 120–1945–00 XFMR,RF:PRI 8UH,2:7,ON–OFF,VERTICALMOUNT,PC MT 0JR03 120–1945–00 A1T3 120–1944–00 TRANSFORMER,RF:PRI 88V,PRI 15V,SEC 40V AT0.385A,5V AT 2A,15V AT 0.80,IDED,PC MOUNT,1.45 X 1.7 X 1.17H 75498 129–2074–EC A1TP1 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A1TP2 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A1U1 152–0900–00 MODULE,HV:7.5KVAC IN,15KVDC OUT,POTTED MODULE 51406 MSL2556 A1U2 156–0067–00 IC,LINEAR:BIPOLAR,OP–AMP; 01295 UA741CP A1U3 156–1225–00 IC,LINEAR:BIPOLAR,COMPTR;DUAL,OPEN COLL,300NS 01295 LM393P A1U4 156–0733–04 IC,DIGITAL:LSTTL,MULTIVIBRATOR 04713 SN74LS221N A1U5 156–2524–00 IC,LINEAR:BIPOLAR,SW–REGULATOR CONTROLLER; PWM,CURRENT MODE,SINGLE TOTEM POLE OUTPUT 48726 UC3842N A1VR1 156–1631–01 IC,LINEAR:BIPOLAR,VR;ADJUSTABLE,SHUNT,100MA,2.2% 01295 TL431CLPM A1VR2 152–0195–00 DIODE,ZENER:5.1V,5%,0.4W 14552 CD332125 A1VR3 152–0195–00 DIODE,ZENER:5.1V,5%,0.4W 14552 CD332125 A1VR4 152–0149–00 DIODE,ZENER:10V,5%,0.4W 04713 1N961BRL A1VR5 152–0287–00 DIODE,ZENER:110V,5%,0.4W;1N986B A1VR6 152–0287–00 DIODE,ZENER:110V,5%,0.4W;1N986B A1W1 131–0566–00 BUS,CONDUCTOR:DUMMY RES,0.094 OD X 0.225L 24546 OMA0207 A1W2 131–0566–00 BUS,CONDUCTOR:DUMMY RES,0.094 OD X 0.225L 24546 OMA0207 A1W3 131–0566–00 BUS,CONDUCTOR:DUMMY RES,0.094 OD X 0.225L 24546 OMA0207 A1W4 131–0566–00 BUS,CONDUCTOR:DUMMY RES,0.094 OD X 0.225L 24546 OMA0207 A2 670–9532–01 CIRCUIT BD ASSY:FRONT PANEL 80009 670953201 A2C355 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A2DS115 150–1181–00 DIODE,OPTO:LED;RED,626NM,101 ELEMENTLINEAR 50434 QDSP–8838 A2DS115 131–5251–00 CONN,BOX:PCB;FEMALE,STR,1 X 37,0.1CTR,0.350 H X 0.125 TAIL,30 GOLD 00779 3–534237–5 A2DS215 150–1181–00 DIODE,OPTO:LED;RED,626NM,101 ELEMENTLINEAR 50434 QDSP–8838 A2DS215 131–5251–00 CONN,BOX:PCB;FEMALE,STR,1 X 37,0.1CTR,0.350 H X 0.125 TAIL,30 GOLD 00779 3–534237–5 A2DS315 150–1181–00 DIODE,OPTO:LED;RED,626NM,101 ELEMENTLINEAR 50434 QDSP–8838 A2DS315 131–5251–00 CONN,BOX:PCB;FEMALE,STR,1 X 37,0.1CTR,0.350 H X 0.125 TAIL,30 GOLD 00779 3–534237–5 A2DS412 150–1291–00 LED ASSEMBLY:DIRECTIONAL;3 IN 5 GREEN TK1155 150–1291–00 A2DS416 ––––––––––– (PART OF A2DS412) A2DS418 ––––––––––– (PART OF A2DS412) 8–12 Serial no. effective Serial No. Discont’d Mfr. Part Number 760A / 760D / 760N Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A2DS432 A2DS434 Serial no. effective Serial No. Discont’d Name & Description Mfr. Code Mfr. Part Number 150–1286–00 DIODE,OPTO:LED;ASSEMBLY,GRN,150–1109–00 IN TK1155 150–1286–00 ––––––––––– (PART OF A2DS432) A2R423 315–0121–00 RES,FXD,FILM:120 OHM,5%,0.25W TK1727 SFR25 2322–181– A2R424 315–0121–00 RES,FXD,FILM:120 OHM,5%,0.25W TK1727 SFR25 2322–181– A2R425 315–0121–00 RES,FXD,FILM:120 OHM,5%,0.25W TK1727 SFR25 2322–181– A2R437 315–0121–00 RES,FXD,FILM:120 OHM,5%,0.25W TK1727 SFR25 2322–181– A2R438 315–0121–00 RES,FXD,FILM:120 OHM,5%,0.25W TK1727 SFR25 2322–181– A2R439 322–3258–00 RES,FXD:METAL FILM;4.75K OHM,1%,0.2W,TC=100 56845 A2R451 321–0274–00 RES,FXD,FILM:6.98K OHM,1%,0.125W,TC=T0MI TK1727 2322–151–6K98 A2R544 311–2332–00 RES,VAR,NONWW:SPST,DOUBLE DETENT,10K OHM,20%,0.25W 12697 CCF50–2–G4751FT CM45225 *ATTACHED PARTS* 210–1435–00 WASHER,FLAT:0.254 X 0.311 X 0.016,SST 86928 5710–56–15P 366–1146–00 KNOB:GY,0.127 ID X 0.392 OD X 0.466 H 0JR05 ORDER BY DESC 260–2330–00 SWITCH,ROTARY:3 POSITION 09353 MA03L1NCG 366–1146–00 KNOB:GY,0.127 ID X 0.392 OD X 0.466 H 0JR05 ORDER BY DESC 214–4725–00 SPRING:COMPRESSION SPRING,0.026,302 STAINLESS STEEL,0.313,+/–,0.0A0 8X345 214–4725–00 A2S525 260–2273–00 SWITCH,PUSH:SPST,LOW PROFILE,MOMENTARY 71590 ORDER BY DESC A2S534 260–2273–00 SWITCH,PUSH:SPST,LOW PROFILE,MOMENTARY 71590 ORDER BY DESC A2U320 156–0111–02 IC,DIGITAL:TTL,DEMUX/DECODER;BCD TO DECIMAL 01295 SN74145N A2U332 156–0111–02 IC,DIGITAL:TTL,DEMUX/DECODER;BCD TO DECIMAL 01295 SN74145N A2U347 156–0111–02 IC,DIGITAL:TTL,DEMUX/DECODER;BCD TO DECIMAL 01295 SN74145N A3 671–2383–04 B050000 CIRCUIT BD ASSY:MAIN (760A ONLY) 80009 671238304 671–2383–05 B052829 CIRCUIT BD ASSY:MAIN (760A ONLY) 80009 671238305 A3 671–1469–04 B030000 CIRCUIT BD ASSY:MAIN (760D ONLY) 80009 671146904 A3 671–1469–05 B030175 CIRCUIT BD ASSY:MAIN (760D ONLY) 80009 671146905 A3 671–1472–04 B030000 CIRCUIT BD ASSY:MAIN (760N ONLY) 80009 671147204 A3 671–1472–05 B030210 CIRCUIT BD ASSY:MAIN (760N ONLY) 80009 671147205 53387 3448–3034 *END ATTACHED PARTS* A2S516 *ATTACHED PARTS* *END ATTACHED PARTS* B052828 B030174 B030209 *ATTACHED PARTS* 358–0723–00 STRAIN RLF,CA:1.9 L X 0.24 W X 0.56 HIGH,PLASTIC A3C125 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C127 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA *END ATTACHED PARTS* 760A / 760D / 760N 8–13 Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A3C132 A3C145 Name & Description Mfr. Code Mfr. Part Number 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C148 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C149 283–0220–00 CAP,FXD,CERAMIC:MLC;0.01UF,20%,50V,X7R,0.20 04222 SR155C103MAA A3C165 290–0782–00 CAP,FXD,ALUM:4.7UF,20%,35V,ESR=42.33 OHM (120HZ,20C) 55680 UVX1V4R7MAA A3C172 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C179 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C187 281–0765–00 CAP,FXD,CER DI:100PF,5%,100V 04222 SA102A101JAA A3C190 290–0990–01 CAP,FXD,ELCTLT:10UF,20%,50VTAPE & REEL 62643 511D296 A3C206 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C211 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C215 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C251 290–0183–00 CAP,FXD,TANT:DRY;1UF,10%,35V,TANT OXD,0.151 X 0.317 12954 AT513A105K035N A3C254 290–0536–00 CAP,FXD,ELCTLT:10UF,20%,25V TANTALUM (760A ONLY) D5243 ETP–3F 10UF 25V A3C254 290–1311–00 CAP,FXD,ALUM:10UF,20%,50V,ESR=1.4 OHM (100KHZ,20C),5X11MM,105C,5000HRS (760D AND 760N ONLY) 55680 UPL1H100MDH1TD A3C255 290–0267–00 CAP,FXD,TANT:DRY;1UF,20%,35V,TANT OXD,0.151 X 0.317 2N936 173D105X0035V A3C258 290–0536–04 CAP,FXD,ELCTLT:10UF,20%,25V (760A ONLY) 2N936 199D106X0025CA1 A3C258 290–0536–00 CAP,FXD,ELCTLT:10UF,20%,25V TANTALUM (760D AND 760N ONLY) D5243 ETP–3F 10UF 25V A3C261 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C262 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C263 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C267 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C268 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C279 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C287 281–0765–00 CAP,FXD,CER DI:100PF,5%,100V 04222 SA102A101JAA A3C290 290–0990–01 CAP,FXD,ELCTLT:10UF,20%,50VTAPE & REEL 62643 511D296 A3C324 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C328 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C332 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C333 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C338 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C343 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C344 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C349 290–0990–01 CAP,FXD,ELCTLT:10UF,20%,50VTAPE & REEL 62643 511D296 A3C361 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C368 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C369 283–0164–00 CAP,FXD,CERAMIC:MLC;2.2UF,20%,25V,Z5U,0.40X 04222 SR403E225MAA 8–14 Serial no. effective Serial No. Discont’d 760A / 760D / 760N Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A3C379 A3C387 Name & Description Mfr. Code Mfr. Part Number 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA 281–0765–00 CAP,FXD,CER DI:100PF,5%,100V 04222 SA102A101JAA A3C390 290–0990–01 CAP,FXD,ELCTLT:10UF,20%,50VTAPE & REEL 62643 511D296 A3C406 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C411 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C415 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C436 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C445 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C448 285–0905–00 CAP,FXD,PLSTC:0.33UF,5%,50V 84411 TEK34 .33 5 50 A3C450 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C453 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C457 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C458 290–0782–00 CAP,FXD,ALUM:4.7UF,20%,35V,ESR=42.33 OHM (120HZ,20C) 55680 UVX1V4R7MAA A3C459 290–0782–00 CAP,FXD,ALUM:4.7UF,20%,35V,ESR=42.33 OHM (120HZ,20C) 55680 UVX1V4R7MAA A3C461 283–0164–00 CAP,FXD,CERAMIC:MLC;2.2UF,20%,25V,Z5U,0.40X 04222 SR403E225MAA A3C462 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C468 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C469 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C479 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C487 281–0765–00 CAP,FXD,CER DI:100PF,5%,100V 04222 SA102A101JAA A3C490 290–0990–01 CAP,FXD,ELCTLT:10UF,20%,50VTAPE & REEL 62643 511D296 A3C502 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C510 290–0973–00 CAP,FXD,ELCTLT:100UF,20%,25VDC 0H1N5 CEUSM1E101 A3C523 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C527 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C530 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C535 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C536 290–0297–00 CAP,FXD,ELCTLT:39UF,10%,10V 12954 D39B10K1 A3C538 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C543 290–0297–00 CAP,FXD,ELCTLT:39UF,10%,10V 12954 D39B10K1 A3C545 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C546 281–0810–00 CAP,FXD,CERAMIC:MLC;5.6PF,+/–0.5PF,100V,0.100 X 0.170 (760A ONLY) 04222 SA102A5R6DAA A3C547 285–1349–00 CAP,FXD,MTLZD:0.1UF,5%,63VDC TK1913 MKS2 .1/63/5 A3C547 285–0808–00 CAP,FXD,PLSTC:0.1UF,10%,50V (760A ONLY) 84411 A3C548 290–0990–01 CAP,FXD,ELCTLT:10UF,20%,50VTAPE & REEL 62643 511D296 A3C548 290–1313–00 CAP,FXD,ALUM:10UF,20%,50V,8 X 11MM;105 DEG,RDL,T&A 55680 UET1H100MPH1TA A3C554 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C556 290–0974–03 CAP,FXD,ELCTLT:10UF,20%,60VDC 55680 UVX1H100MAA1TD A3C557 290–0974–03 CAP,FXD,ELCTLT:10UF,20%,60VDC 55680 UVX1H100MAA1TD 760A / 760D / 760N Serial no. effective Serial No. Discont’d TEK34–1049R5 8–15 Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A3C562 A3C570 Name & Description Mfr. Code Mfr. Part Number 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA 290–0782–00 CAP,FXD,ALUM:4.7UF,20%,35V,ESR=42.33 OHM (120HZ,20C) 55680 UVX1V4R7MAA A3C571 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C573 290–0488–00 CAP,FXD,ELCTLT:2.2UF,10%,20V 2N936 150D225X9020A2 A3C574 290–0488–00 CAP,FXD,ELCTLT:2.2UF,10%,20V 2N936 150D225X9020A2 A3C575 290–0183–00 CAP,FXD,TANT:DRY;1UF,10%,35V,TANT OXD,0.151 X 0.317 12954 AT513A105K035N A3C578 290–0512–00 CAP,FXD,ELCTLT:22UF,20%,15V 2N936 199D226X0015DA1 A3C580 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C581 290–0512–00 CAP,FXD,ELCTLT:22UF,20%,15V 2N936 199D226X0015DA1 A3C584 290–0488–00 CAP,FXD,ELCTLT:2.2UF,10%,20V 2N936 150D225X9020A2 A3C586 290–0183–00 CAP,FXD,TANT:DRY;1UF,10%,35V,TANT OXD,0.151 X 0.317 12954 AT513A105K035N A3C587 290–0488–00 CAP,FXD,ELCTLT:2.2UF,10%,20V 2N936 150D225X9020A2 A3C588 290–0782–00 CAP,FXD,ALUM:4.7UF,20%,35V,ESR=42.33 OHM (120HZ,20C) 55680 UVX1V4R7MAA A3C589 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C612 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C616 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C618 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C646 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C649 285–1349–00 CAP,FXD,MTLZD:0.1UF,5%,63VDC TK1913 MKS2 .1/63/5 A3C650 285–0905–00 CAP,FXD,PLSTC:0.33UF,5%,50V 84411 TEK34 .33 5 50 A3C660 281–0765–00 CAP,FXD,CER DI:100PF,5%,100V 04222 SA102A101JAA A3C663 290–0990–01 CAP,FXD,ELCTLT:10UF,20%,50VTAPE & REEL 62643 511D296 A3C670 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C690 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C695 290–0488–00 CAP,FXD,ELCTLT:2.2UF,10%,20V 2N936 150D225X9020A2 A3C708 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C711 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C712 281–0812–00 CAP,FXD,CERAMIC:MLC;1000PF,10%,100V,0.100 X 04222 SA101C102KAA A3C715 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C718 283–0142–00 CAP,FXD,CER DI:0.0027UF,5%,200V TK2058 CK45YE2D272J–A A3C724 290–0297–00 CAP,FXD,ELCTLT:39UF,10%,10V 12954 D39B10K1 A3C725 290–0297–00 CAP,FXD,ELCTLT:39UF,10%,10V 12954 D39B10K1 A3C728 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C731 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C735 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C738 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C744 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C745 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C746 281–0810–00 CAP,FXD,CERAMIC:MLC;5.6PF,+/–0.5PF,100V,0.100 X 0.170 (760A ONLY) 04222 SA102A5R6DAA A3C748 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA 8–16 Serial no. effective Serial No. Discont’d 760A / 760D / 760N Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A3C753 A3C754 Name & Description Mfr. Code Mfr. Part Number 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C755 290–0990–01 CAP,FXD,ELCTLT:10UF,20%,50VTAPE & REEL 62643 511D296 A3C758 281–0765–00 CAP,FXD,CER DI:100PF,5%,100V 04222 SA102A101JAA A3C764 290–0990–01 CAP,FXD,ELCTLT:10UF,20%,50VTAPE & REEL 62643 511D296 A3C768 290–0488–00 CAP,FXD,ELCTLT:2.2UF,10%,20V 2N936 150D225X9020A2 A3C772 290–0512–00 CAP,FXD,ELCTLT:22UF,20%,15V 2N936 199D226X0015DA1 A3C776 290–0944–01 CAP,FXD,ELCTLT:220UF,20%,10V,LEADSPACING 0.2 0H1N5 CEBSM1C221M–T4 A3C778 283–0623–00 CAP,FXD,MICA DI:1200PF,1%,100V TK0891 RDM19FD122F03 A3C785 290–0512–00 CAP,FXD,ELCTLT:22UF,20%,15V 2N936 199D226X0015DA1 A3C794 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C815 283–0728–00 CAP,FXD,MICA DI:120PF,1%,500V TK0891 RDM15FD121F03 A3C818 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 A3C819 281–0773–00 CAP,FXD,CERAMIC:MLC;0.01UF,10%,100V TK1743 CGB103KEX A3C823 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C825 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C841 290–0297–00 CAP,FXD,ELCTLT:39UF,10%,10V 12954 D39B10K1 A3C853 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C854 281–0810–00 CAP,FXD,CERAMIC:MLC;5.6PF,+/–0.5PF,100V,0.100 X 0.170 (760A ONLY) 04222 SA102A5R6DAA A3C855 285–1349–00 CAP,FXD,MTLZD:0.1UF,5%,63VDC (760A ONLY) TK1913 MKS2 .1/63/5 A3C858 285–0905–00 CAP,FXD,PLSTC:0.33UF,5%,50V 84411 A3C870 283–0623–00 CAP,FXD,MICA DI:1200PF,1%,100V TK0891 RDM19FD122F03 A3C872 283–0728–00 CAP,FXD,MICA DI:120PF,1%,500V TK0891 RDM15FD121F03 A3C873 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C874 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C876 283–0789–00 CAP,FXD,MICA DI:600PF,1%,300V,0.41 X 0.48 TK0891 RDM15FC601F03 A3C880 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C881 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A3C890 283–0623–00 CAP,FXD,MICA DI:1200PF,1%,100V TK0891 RDM19FD122F03 A3C891 283–0728–00 CAP,FXD,MICA DI:120PF,1%,500V TK0891 RDM15FD121F03 A3C894 281–0775–00 CAP,FXD,CERAMIC:MLC;0.1UF,20%,50V,Z5U,0.170 04222 A3C895 283–0789–00 CAP,FXD,MICA DI:600PF,1%,300V,0.41 X 0.48 TK0891 RDM15FC601F03 A3C897 283–0623–00 CAP,FXD,MICA DI:1200PF,1%,100V TK0891 RDM19FD122F03 A3CR186 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 A3CR187 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR254 152–0066–00 DIODE,RECT:400V,1A,IFSM=30A,1.2VF,2US 0LUA3 1N5060 A3CR255 152–0066–00 DIODE,RECT:400V,1A,IFSM=30A,1.2VF,2US 0LUA3 1N5060 A3CR286 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR287 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 760A / 760D / 760N Serial no. effective Serial No. Discont’d SA105E104MAA TEK34 .33 5 50 SA105E104MAA FDH9427 8–17 Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number Serial no. effective Serial No. Discont’d Name & Description Mfr. Code Mfr. Part Number A3CR356 152–0066–00 DIODE,RECT:400V,1A,IFSM=30A,1.2VF,2US 0LUA3 1N5060 A3CR386 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR387 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR442 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR443 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR456 152–0066–00 DIODE,RECT:400V,1A,IFSM=30A,1.2VF,2US 0LUA3 1N5060 A3CR458 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR459 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR486 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR487 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR536 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR542 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR543 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR545 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR546 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR558 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR559 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR563 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR564 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR565 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR566 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR616 152–0400–00 DIODE,RECT:FAST RCVRY;400V,1A,200NS 0LUA3 1N4936 A3CR638 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR642 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR643 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR658 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR659 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR742 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR743 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR746 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR747 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR757 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR758 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR780 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR790 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR791 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR846 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR850 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR851 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR852 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 8–18 760A / 760D / 760N Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A3CR853 A3CR854 Name & Description Mfr. Code Mfr. Part Number 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR855 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3CR876 152–0141–02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A3J115 131–3363–00 CONN,HDR:PCB;MALE,RTANG,2 X 17,0.1CTR,0.33D 53387 2534–5002UB A3J153 175–9797–00 CA ASSY,SP:FLAT FLEX;FLX,10,27 AWG,2.5 L,1X10,BOX X STR,SLDR TAB,CONN NON PLZ TK2469 175–9797–00 A3J185 131–4750–00 CONN,HDR:PCB;MALE,STR,1 X 6,0.100 CTR,0.230 MLG X 0.110 TAIL,30 GOLD 53387 2406–6112TB A3J186 131–4750–00 CONN,HDR:PCB;MALE,STR,1 X 6,0.100 CTR,0.230 MLG X 0.110 TAIL,30 GOLD 53387 2406–6112TB A3J191 131–4530–00 CONN,HDR:PCB;MALE,STR,1 X 3,0.1 CTR,0.230MLG X 0.120 TAIL,30GOLD,BD RETENTION 00779 104344–1 A3J192 131–4530–00 CONN,HDR:PCB;MALE,STR,1 X 3,0.1 CTR,0.230MLG X 0.120 TAIL,30GOLD,BD RETENTION 00779 104344–1 A3J198 131–4530–00 CONN,HDR:PCB;MALE,STR,1 X 3,0.1 CTR,0.230MLG X 0.120 TAIL,30GOLD,BD RETENTION 00779 104344–1 A3J273 131–4530–00 CONN,HDR:PCB;MALE,STR,1 X 3,0.1 CTR,0.230 MLG X 0.120 TAIL,30GOLD,BD RETENTION 00779 104344–1 A3J373 131–4530–00 CONN,HDR:PCB;MALE,STR,1 X 3,0.1 CTR,0.230 MLG X 0.120 TAIL,30GOLD,BD RETENTION 00779 104344–1 A3J385 131–4750–00 CONN,HDR:PCB;MALE,STR,1 X 6,0.100 CTR,0.230 MLG X 0.110 TAIL,30 GOLD 53387 2406–6112TB A3J386 131–4750–00 CONN,HDR:PCB;MALE,STR,1 X 6,0.100 CTR,0.230 MLG X 0.110 TAIL,30 GOLD 53387 2406–6112TB A3J391 131–4530–00 CONN,HDR:PCB;MALE,STR,1 X 3,0.1 CTR,0.230 MLG X 0.120 TAIL,30GOLD,BD RETENTION 00779 104344–1 A3J392 131–4530–00 CONN,HDR:PCB;MALE,STR,1 X 3,0.1 CTR,0.230 MLG X 0.120 TAIL,30GOLD,BD RETENTION 00779 104344–1 A3J398 131–4530–00 CONN,HDR:PCB;MALE,STR,1 X 3,0.1 CTR,0.230 MLG X 0.120 TAIL,30GOLD,BD RETENTION 00779 104344–1 A3J413 131–4421–00 CONN,HDR:PCB;MALE,STR,2 X 10,0.1 CTR,0.235 53387 2420–6142TB A3J419 131–3766–00 CONN,HDR:PCB;MALE,RTANG,1 X 2,0.1 CTR,0.235 MLG X 0.110 TAIL,30 GOLD,0.025 SQ 00779 87232–2 A3J657 131–4750–00 CONN,HDR:PCB;MALE,STR,1 X 6,0.100 CTR,0.230 MLG X 0.110 TAIL,30 GOLD 53387 2406–6112TB A3J658 131–4750–00 CONN,HDR:PCB;MALE,STR,1 X 6,0.100 CTR,0.230 MLG X 0.110 TAIL,30 GOLD 53387 2406–6112TB A3J663 131–4530–00 CONN,HDR:PCB;MALE,STR,1 X 3,0.1 CTR,0.230 MLG X 0.120 TAIL,30GOLD,BD RETENTION 00779 104344–1 A3J664 131–4530–00 CONN,HDR:PCB;MALE,STR,1 X 3,0.1 CTR,0.230 MLG X 0.120 TAIL,30GOLD,BD RETENTION 00779 104344–1 A3J668 131–4530–00 CONN,HDR:PCB;MALE,STR,1 X 3,0.1 CTR,0.230 MLG X 0.120 TAIL,30GOLD,BD RETENTION 00779 104344–1 A3L513 108–1262–00 INDUCTOR,FXD:POWER;100UH,10%,I<0.75A,RDC<0.23 OHM,Q>15,SRF>5.4MHZ,BOBBIN CORE TK2058 TSL0807–101KR75 A3P185 131–3199–00 CONN,SHUNT:SHUNT;FEMALE,STR,1 X 2,0.1 CTR,0.2 H,LOW PROFILE,JUMPER 22526 760A / 760D / 760N Serial no. effective Serial No. Discont’d 68786–202 8–19 Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A3P192 131–3199–00 A3P273 Mfr. Code Mfr. Part Number CONN,SHUNT:SHUNT;FEMALE,STR,1 X 2,0.1 CTR, 0.2 H,LOW PROFILE,JUMPER 22526 68786–202 131–3199–00 CONN,SHUNT:SHUNT;FEMALE,STR,1 X 2,0.1 CTR, 0.2 H,LOW PROFILE,JUMPER 22526 68786–202 A3P373 131–3199–00 CONN,SHUNT:SHUNT;FEMALE,STR,1 X 2,0.1 CTR, 0.2 H,LOW PROFILE,JUMPER 22526 68786–202 A3P385 131–3199–00 CONN,SHUNT:SHUNT;FEMALE,STR,1 X 2,0.1 CTR, 0.2 H,LOW PROFILE,JUMPER 22526 68786–202 A3P392 131–3199–00 CONN,SHUNT:SHUNT;FEMALE,STR,1 X 2,0.1 CTR, 0.2 H,LOW PROFILE,JUMPER 22526 68786–202 A3P657 131–3199–00 CONN,SHUNT:SHUNT;FEMALE,STR,1 X 2,0.1 CTR, 0.2 H,LOW PROFILE,JUMPER 22526 68786–202 A3P664 131–3199–00 CONN,SHUNT:SHUNT;FEMALE,STR,1 X 2,0.1 CTR, 0.2 H,LOW PROFILE,JUMPER 22526 68786–202 A3Q507 151–0190–00 XSTR,SIG:BIPOLAR,NPN;40V,200MA,30MHZ,0AMPL 0JR04 2N3904 A3Q603 151–0190–00 XSTR,SIG:BIPOLAR,NPN;40V,200MA,300MHZ,AMPL 0JR04 2N3904 A3Q604 151–0188–00 XSTR,SIG:BIPOLAR,PNP;40V,200MA,250MHZ,AMPL 0JR04 2N3906 A3Q620 151–0710–00 XSTR,SIG:BIPOLAR,NPN;40V,1.0A,50MHZ,AMPLIFIER 04713 MPSW01A A3Q695 151–0190–00 XSTR,SIG:BIPOLAR,NPN;40V,200MA,300MHZ,AMPL 0JR04 2N3904 A3Q761 151–0190–00 XSTR,SIG:BIPOLAR,NPN;40V,200MA,300MHZ,AMPL 0JR04 2N3904 A3Q766 151–0190–00 XSTR,SIG:BIPOLAR,NPN;40V,200MA,300MHZ,AMPL 0JR04 2N3904 A3Q769 151–0190–00 XSTR,SIG:BIPOLAR,NPN;40V,200MA,300MHZ,AMPL 0JR04 2N3904 A3Q776 151–0190–00 XSTR,SIG:BIPOLAR,NPN;40V,200MA,300MHZ,AMPL 0JR04 2N3904 A3Q795 151–0190–00 XSTR,SIG:BIPOLAR,NPN;40V,200MA,300MHZ,AMPL 0JR04 2N3904 A3Q861 151–0347–00 XSTR,SIG:BIPOLAR,NPN;160V,600MA,10MHZ,0AMPL 0JR04 2N5551 A3Q864 151–0347–00 XSTR,SIG:BIPOLAR,NPN;160V,600MA,100MHZ,AMPL 0JR04 2N5551 A3Q865 151–0190–00 XSTR,SIG:BIPOLAR,NPN;40V,200MA,300MHZ,AMPL 0JR04 2N3904 A3Q883 151–0190–00 XSTR,SIG:BIPOLAR,NPN;40V,200MA,300MHZ,AMPL 0JR04 2N3904 A3Q884 151–0347–00 XSTR,SIG:BIPOLAR,NPN;160V,600MA,100MHZ,AMPL 0JR04 2N5551 A3Q885 151–0190–00 XSTR,SIG:BIPOLAR,NPN;40V,200MA,300MHZ,AMPL 0JR04 2N3904 A3Q886 151–0347–00 XSTR,SIG:BIPOLAR,NPN;160V,600MA,100MHZ,AMPL 0JR04 2N5551 A3R122 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A3R123 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A3R124 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A3R155 311–2230–00 B050000 RES,VAR,TRMR:CERMET;500 OHM,20%,0.5W,0.197 SQ,TOP ADJUST (760A ONLY) TK2073 GF06UT2 501 M L A3R155 311–2231–00 B052829 RES,VAR,TRMR:CERMET,1K OHM,20%,0.5W,0.197 SQ,TOP ADJUST,T&R (760A ONLY) TK2073 GF06UT2 102 M L20 A3R155 311–2230–00 B030000 RES,VAR,TRMR:CERMET;500 OHM,20%,0.5W,0.197 SQ,TOP ADJUST (760D ONLY) TK2073 GF06UT2 501 M L A3R155 311–2231–00 B030175 RES,VAR,TRMR:CERMET,1K OHM,20%,0.5W,0.197 SQ,TOP ADJUST,T&R (760D ONLY) TK2073 GF06UT2 102 M L20 8–20 Serial no. effective Serial No. Discont’d B052828 B030174 Name & Description 760A / 760D / 760N Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number Serial no. effective Serial No. Discont’d A3R155 311–2230–00 B030000 B030209 A3R155 311–2231–00 B030210 A3R156 A3R157 Name & Description Mfr. Code Mfr. Part Number RES,VAR,TRMR:CERMET;500 OHM,20%,0.5W,0.197 SQ,TOP ADJUST (760N ONLY) TK2073 GF06UT2 501 M L RES,VAR,TRMR:CERMET,1K OHM,20%,0.5W,0.197 SQ,TOP ADJUST,T&R (760N ONLY) TK2073 GF06UT2 102 M L20 322–3258–00 RES,FXD:METAL FILM;4.75K OHM,1%,0.2W,TC=100 56845 CCF50–2–G4751FT 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R158 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R168 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R169 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R170 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R174 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A3R175 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A3R176 321–0816–07 RES,FXD,FILM:5K OHM,0.1%,0.125W,TC=T9MI TK1727 MPR24–2322–141– A3R177 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A3R180 322–3373–00 RES,FXD,FILM:75K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G75001F A3R181 321–0748–06 RES,FXD,FILM:4.95K OHM,0.25%,0.125W,TC=T9 19701 5033RE4K950C A3R182 322–3237–00 RES,FXD,FILM:2.87K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G28700F A3R183 322–3373–00 RES,FXD,FILM:75K OHM,1%,0.2W,TC=T0MI,SMALL BODY (760A ONLY) 91637 CCF501G75001F A3R183 322–3254–00 RES,FXD,FILM:4.32K OHM,1%,0.2W,TC=T0MI,SMALL BODY (760D ONLY) 91637 CCF502G4321FT A3R183 322–3286–00 RES,FXD,FILM:9.31K OHM,1%,0.2W,TC=T0MI,SMALL BODY (760N ONLY) 91637 CCF501G93100F A3R187 321–1612–07 RES,FXD,FILM:4.455K OHM,0.1%,0.125W,TC=T9 19701 5033RE4K455B A3R188 321–0603–07 RES,FXD,FILM:15K OHM,0.1%,0.125W,TC=T9MI 19701 5033RE15K00B A3R195 323–0114–00 RES,FXD,FILM:150 OHM,1%,0.5W,TC=T0 91637 CMF65116G150R0F A3R196 323–0172–00 RES,FXD,FILM:604 OHM,1%,0.5W,TC=T0 91637 CMF65116G604ROF A3R247 315–0275–00 RES,FXD,FILM:2.7M OHM,5%,0.25W TK1727 SFR25 2322–181– A3R248 315–0755–00 RES,FXD,FILM:7.5M OHM,5%,0.25W 19701 A3R252 311–2239–00 RES,VAR,TRMR:CERMET;100K OHM,20%,0.5W,0.197 TK2073 GF06UT2 104 M L A3R253 311–2239–00 RES,VAR,TRMR:CERMET;100K OHM,20%,0.5W,0.197 TK2073 GF06UT2 104 M L A3R255 322–3350–00 RES,FXD,FILM:43.2K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 A3R262 311–2230–00 RES,VAR,TRMR:CERMET;500 OHM,20%,0.5W,0.197 SQ,TOP ADJUST TK2073 GF06UT2 501 M L A3R263 322–3265–00 RES,FXD:METAL FILM;5.62K OHM,1%,0.2W,TC=100 91637 CCF501G56200F A3R264 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R265 315–0302–00 RES,FXD,FILM:3K OHM,5%,0.25W TK1727 SFR25 2322–181– A3R274 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A3R275 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A3R276 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A3R277 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F 760A / 760D / 760N 5043CX7M500J CCF502G4322FT 8–21 Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A3R280 A3R281 Name & Description Mfr. Code Mfr. Part Number 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B 322–3318–00 RES,FXD,FILM:MET FILM;20K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G20001F A3R282 322–3373–00 RES,FXD,FILM:75K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G75001F A3R287 321–1612–07 RES,FXD,FILM:4.455K OHM,0.1%,0.125W,TC=T9 19701 5033RE4K455B A3R288 321–0603–07 RES,FXD,FILM:15K OHM,0.1%,0.125W,TC=T9MI 19701 5033RE15K00B A3R306 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A3R311 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A3R315 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A3R319 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A3R320 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A3R321 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A3R336 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R337 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R344 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R347 311–2230–00 RES,VAR,TRMR:CERMET;500 OHM,20%,0.5W,0.197 SQ,TOP ADJUST TK2073 GF06UT2 501 M L A3R351 311–2236–00 RES,VAR,TRMR:CERMET;20K OHM,20%,0.5W,0.197 SQ,SIDE ADJUST TK2073 GF06UT2 203 M L A3R352 311–2236–00 RES,VAR,TRMR:CERMET;20K OHM,20%,0.5W,0.197 SQ,SIDE ADJUST TK2073 GF06UT2 203 M L A3R353 322–3481–00 RES,FXD,FILM:1M OHM.1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G10003F A3R354 322–3481–00 RES,FXD,FILM:1M OHM.1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G10003F A3R355 322–3222–00 RES,FXD:METAL FILM;2K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G20000F A3R356 322–3350–00 RES,FXD,FILM:43.2K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF502G4322FT A3R357 322–3172–00 RES,FXD,FILM:604 OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G604ROF A3R358 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R359 315–0205–00 RES,FXD,FILM:2M OHM,5%,0.25W TK1727 SFR25 2322–181– A3R362 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R363 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R364 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R366 322–3385–00 RES,FXD:METAL FILM;100K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10002F A3R370 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R371 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R373 321–0816–07 RES,FXD,FILM:5K OHM,0.1%,0.125W,TC=T9MI TK1727 MPR24–2322–141– A3R374 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 A3R375 321–0816–07 RES,FXD,FILM:5K OHM,0.1%,0.125W,TC=T9MI TK1727 MPR24–2322–141– A3R376 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 A3R380 322–3373–00 RES,FXD,FILM:75K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G75001F A3R381 321–0748–06 RES,FXD,FILM:4.95K OHM,0.25%,0.125W,TC=T9 19701 5033RE4K950C A3R382 322–3237–00 RES,FXD,FILM:2.87K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G28700F A3R383 322–3373–00 RES,FXD,FILM:75K OHM,1%,0.2W,TC=T0MI,SMALL BODY (760A ONLY) 91637 CCF501G75001F 8–22 Serial no. effective Serial No. Discont’d CCF501C10001B CCF501C10001B 760A / 760D / 760N Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A3R383 322–3254–00 A3R383 Mfr. Code Mfr. Part Number RES,FXD,FILM:4.32K OHM,1%,0.2W,TC=T0MI,SMALL BODY (760D ONLY) 91637 CCF502G4321FT 322–3286–00 RES,FXD,FILM:9.31K OHM,1%,0.2W,TC=T0MI,SMALL BODY (760N ONLY) 91637 CCF501G93100F A3R387 321–1612–07 RES,FXD,FILM:4.455K OHM,0.1%,0.125W,TC=T9 19701 5033RE4K455B A3R388 321–0603–07 RES,FXD,FILM:15K OHM,0.1%,0.125W,TC=T9MI 19701 5033RE15K00B A3R400 311–2269–00 RES,VAR,NONWW:TRMR,20K OHM,20%,0.5WLINEAR,MI TK2073 GF06VT2 203 M L A3R423 307–0446–00 RES NTWK,FXD,FI:10K OHM,20%,(9)RES 11236 750–101–R10K A3R441 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R443 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R446 322–3258–00 RES,FXD:METAL FILM;4.75K OHM,1%,0.2W,TC=100 56845 CCF50–2–G4751FT A3R447 321–1720–00 RES,FXD,FILM:3.24M OHM,1%,0.125W,TC=T0MI 64537 PME55 3.24 MEGO A3R451 322–3222–00 RES,FXD:METAL FILM;2K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G20000F A3R455 322–3258–00 RES,FXD:METAL FILM;4.75K OHM,1%,0.2W,TC=100 56845 CCF50–2–G4751FT A3R456 322–3172–00 RES,FXD,FILM:604 OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G604ROF A3R458 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R460 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R463 311–2236–00 RES,VAR,TRMR:CERMET;20K OHM,20%,0.5W,0.197 SQ,SIDE ADJUST TK2073 GF06UT2 203 M L A3R466 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R467 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R469 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R470 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R471 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R472 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R473 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R474 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A3R475 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A3R476 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A3R477 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A3R478 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R480 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A3R481 322–3318–00 RES,FXD,FILM:MET FILM;20K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G20001F A3R482 322–3373–00 RES,FXD,FILM:75K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G75001F A3R487 321–1612–07 RES,FXD,FILM:4.455K OHM,0.1%,0.125W,TC=T9 19701 5033RE4K455B A3R488 321–0603–07 RES,FXD,FILM:15K OHM,0.1%,0.125W,TC=T9MI 19701 5033RE15K00B A3R495 323–0114–00 RES,FXD,FILM:150 OHM,1%,0.5W,TC=T0 91637 CMF65116G150R0F A3R496 323–0172–00 RES,FXD,FILM:604 OHM,1%,0.5W,TC=T0 91637 CMF65116G604ROF A3R520 311–2212–01 RES,VAR,NONWW:CKT BD,20K OHM,10%,0.25WLINEAR 12697 CM45228 A3R520 366–1701–01 KNOB:GY,0.127 ID X 0.392 OD X 0.4 H 80009 366170101 A3R541 321–0418–00 RES,FXD,FILM:221K OHM,1%,0.125W,TC=T0MI 19701 5043ED221K0F A3R543 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F 760A / 760D / 760N Serial no. effective Serial No. Discont’d Name & Description 8–23 Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number Serial no. effective Serial No. Discont’d A3R546 311–2230–00 RES,VAR,TRMR:CERMET;500 OHM,20%,0.5W,0.197 SQ,TOP ADJUST A3R547 322–3282–00 RES,FXD,FILM:8.45K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G84500F A3R548 322–3314–00 RES,FXD:METAL FILM;18.2K OHM,1%,0.2W,TC=100 (760A ONLY) 91637 CCF501G18201F A3R550 322–3350–00 RES,FXD,FILM:43.2K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF502G4322FT A3R551 322–3222–00 RES,FXD:METAL FILM;2K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G20000F A3R553 311–2236–00 RES,VAR,TRMR:CERMET;20K OHM,20%,0.5W,0.197 SQ,SIDE ADJUST TK2073 GF06UT2 203 M L A3R554 322–3481–00 A3R556 311–2230–00 B050000 A3R556 311–2231–00 B052829 A3R556 311–2230–00 B030000 A3R556 311–2231–00 B030175 A3R556 311–2230–00 B030000 A3R556 311–2231–00 B030210 A3R558 Name & Description Mfr. Code Mfr. Part Number TK2073 GF06UT2 501 M L RES,FXD,FILM:1M OHM.1%,0.2W,TC=T0MI,SMALL BODY 91637 RES,VAR,TRMR:CERMET;500 OHM,20%,0.5W,0.197 SQ,TOP ADJUST (760A ONLY) TK2073 GF06UT2 501 M L RES,VAR,TRMR:CERMET,1K OHM,20%,0.5W,0.197 SQ,TOP ADJUST,T&R (760A ONLY) TK2073 GF06UT2 102 M L20 RES,VAR,TRMR:CERMET;500 OHM,20%,0.5W,0.197 SQ,TOP ADJUST (760D ONLY) TK2073 GF06UT2 501 M L RES,VAR,TRMR:CERMET,1K OHM,20%,0.5W,0.197 SQ,TOP ADJUST,T&R (760D ONLY) TK2073 GF06UT2 102 M L20 RES,VAR,TRMR:CERMET;500 OHM,20%,0.5W,0.197 SQ,TOP ADJUST (760N ONLY) TK2073 GF06UT2 501 M L RES,VAR,TRMR:CERMET,1K OHM,20%,0.5W,0.197 SQ,TOP ADJUST,T&R (760N ONLY) TK2073 GF06UT2 102 M L20 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R560 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R562 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R563 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R564 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R565 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R566 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R568 322–3385–00 RES,FXD:METAL FILM;100K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10002F A3R576 322–3469–00 RES,FXD,FILM:750K OHM,1%,0.2W,TC=T0MI,SMALL 91637 CCF501G75002F A3R577 322–3306–00 RES,FXD:METAL FILM;15K OHM,1%,0.2W,TC=100 PPM 91637 CCF50–2–G1502F A3R580 311–2232–00 RES,VAR,TRMR:CERMET;2K OHM,20%,0.5W,0.197 SQ,TOP ADJUST TK2073 GF06UT2 202 M L A3R582 322–3469–00 RES,FXD,FILM:750K OHM,1%,0.2W,TC=T0MI,SMALL 91637 A3R583 321–0303–00 RES,FXD,FILM:14.0K OHM,1%,0.125W,TC=T0MI 19701 5043ED14K00F A3R593 322–3385–00 RES,FXD:METAL FILM;100K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10002F A3R594 322–3193–00 RES,FXD:METAL FILM;1K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10000F A3R600 311–2269–00 RES,VAR,NONWW:TRMR,20K OHM,20%,0.5WLINEAR,MI TK2073 GF06VT2 203 M L A3R601 311–2269–00 RES,VAR,NONWW:TRMR,20K OHM,20%,0.5WLINEAR,MI TK2073 GF06VT2 203 M L 8–24 B052828 B030174 B030209 CCF501G10003F CCF501G75002F 760A / 760D / 760N Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A3R602 A3R603 Name & Description Mfr. Code Mfr. Part Number 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A3R604 301–0101–00 RES,FXD,FILM:100 OHM,5%,0.5W TK1727 SFR30 2322–182– A3R605 322–3193–00 RES,FXD:METAL FILM;1K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10000F A3R606 322–3385–00 RES,FXD:METAL FILM;100K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10002F A3R607 322–3385–00 RES,FXD:METAL FILM;100K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10002F A3R608 322–3385–00 RES,FXD:METAL FILM;100K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10002F A3R609 322–3322–00 RES,FXD:METAL FILM;22.1K OHM,1%,0.2W,TC=100 91637 CCF501G22101F A3R610 322–3354–00 RES,FXD:METAL FILM;47.5K OHM,1%,0.2W,TC=100 91637 CCF501G47501F A3R613 322–3193–00 RES,FXD:METAL FILM;1K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10000F A3R615 308–0344–00 RES,FXD,WW:18.2 OHM,1%,3W 91637 RS2B–18R2OF–TR A3R617 322–3193–00 RES,FXD:METAL FILM;1K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10000F A3R632 321–0418–00 RES,FXD,FILM:221K OHM,1%,0.125W,TC=T0MI 19701 5043ED221K0F A3R637 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A3R641 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R643 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R646 322–3258–00 RES,FXD:METAL FILM;4.75K OHM,1%,0.2W,TC=100 56845 CCF50–2–G4751FT A3R647 321–1720–00 RES,FXD,FILM:3.24M OHM,1%,0.125W,TC=T0MI 64537 PME55 3.24 MEGO A3R648 322–3282–00 RES,FXD,FILM:8.45K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G84500F A3R649 322–3314–00 RES,FXD:METAL FILM;18.2K OHM,1%,0.2W,TC=100 (760A ONLY) 91637 CCF501G18201F A3R652 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A3R653 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A3R655 322–3373–00 RES,FXD,FILM:75K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G75001F A3R656 321–0748–06 RES,FXD,FILM:4.95K OHM,0.25%,0.125W,TC=T9 19701 5033RE4K950C A3R657 322–3237–00 RES,FXD,FILM:2.87K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G28700F A3R658 322–3373–00 RES,FXD,FILM:75K OHM,1%,0.2W,TC=T0MI,SMALL BODY (760A ONLY) 91637 CCF501G75001F A3R658 322–3254–00 RES,FXD,FILM:4.32K OHM,1%,0.2W,TC=T0MI,SMALL BODY (760D ONLY) 91637 CCF502G4321FT A3R658 322–3286–00 RES,FXD,FILM:9.31K OHM,1%,0.2W,TC=T0MI,SMALL BODY (760N ONLY) 91637 CCF501G93100F A3R660 321–1612–07 RES,FXD,FILM:4.455K OHM,0.1%,0.125W,TC=T9 19701 5033RE4K455B A3R661 321–0603–07 RES,FXD,FILM:15K OHM,0.1%,0.125W,TC=T9MI 19701 5033RE15K00B A3R672 322–3258–00 RES,FXD:METAL FILM;4.75K OHM,1%,0.2W,TC=100 56845 CCF50–2–G4751FT A3R673 322–3147–00 RES,FXD:METAL FILM;332 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G332R0F A3R674 322–3193–00 RES,FXD:METAL FILM;1K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10000F A3R675 322–3385–00 RES,FXD:METAL FILM;100K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10002F A3R676 321–0340–00 RES,FXD,FILM:34.0K OHM,1%,0.125W,TC=T0MI TK1727 2322–151–34K0 A3R677 322–3450–00 RES,FXD,FILM:475K OHM,1%,0.2W,TC=T0MI,SMALL 91637 CCF50–2G47502F A3R678 322–3481–00 RES,FXD,FILM:1M OHM.1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G10003F A3R682 321–0340–00 RES,FXD,FILM:34.0K OHM,1%,0.125W,TC=T0MI TK1727 2322–151–34K0 760A / 760D / 760N Serial no. effective Serial No. Discont’d 8–25 Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A3R683 A3R684 Name & Description Mfr. Code Mfr. Part Number 322–3450–00 RES,FXD,FILM:475K OHM,1%,0.2W,TC=T0MI,SMALL 91637 CCF50–2G47502F 322–3193–00 RES,FXD:METAL FILM;1K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10000F A3R685 322–3385–00 RES,FXD:METAL FILM;100K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10002F A3R686 322–3481–00 RES,FXD,FILM:1M OHM.1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G10003F A3R687 322–3147–00 RES,FXD:METAL FILM;332 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G332R0F A3R688 322–3258–00 RES,FXD:METAL FILM;4.75K OHM,1%,0.2W,TC=100 56845 CCF50–2–G4751FT A3R693 322–3354–00 RES,FXD:METAL FILM;47.5K OHM,1%,0.2W,TC=100 91637 CCF501G47501F A3R694 322–3222–00 RES,FXD:METAL FILM;2K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G20000F A3R700 311–2262–00 RES,VAR,NONWW:TRMR,1M OHM,20%,0.5WLINEAR,MI TK2073 GF06VT2 105 M L A3R716 322–3158–00 RES,FXD,FILM:432 OHM,1%,0.2W,TC=T0MI,SMALL BODY 57668 CRB2D FXE 432 A3R717 322–3281–00 RES,FXD:METAL FILM;8.25K OHM,1%,0.2W,TC=100 91637 CCF501G82500F A3R720 311–2212–01 RES,VAR,NONWW:CKT BD,20K OHM,10%,0.25WLINEAR 12697 CM45228 A3R720 366–1701–01 KNOB:GY,0.127 ID X 0.392 OD X 0.4 H 80009 366170101 A3R732 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A3R733 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A3R734 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R735 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A3R736 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A3R737 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R738 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A3R743 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R751 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A3R752 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A3R753 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R755 322–3289–07 RES,FXD,FILM:10K OHM,0.1%,0.2W,TC=T9,T&R,SM BODY 91637 CCF501C10001B A3R756 322–3318–00 RES,FXD,FILM:MET FILM;20K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G20001F A3R757 322–3373–00 RES,FXD,FILM:75K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G75001F A3R758 311–2230–00 RES,VAR,TRMR:CERMET;500 OHM,20%,0.5W,0.197 SQ,TOP ADJUST TK2073 GF06UT2 501 M L A3R759 311–2234–00 RES,VAR,TRMR:CERMET;5K OHM,20%,0.5W,0.197 SQ,TOP ADJUST TK2073 GF06UT2 502 M L A3R760 322–3246–00 RES,FXD,FILM:3.57K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 A3R761 322–3130–00 RES,FXD:METAL FILM;221 OHM,1%,0.2W,TC=100 PPM 57668 RB20FX221E A3R762 321–1612–07 RES,FXD,FILM:4.455K OHM,0.1%,0.125W,TC=T9 19701 5033RE4K455B A3R763 321–0603–07 RES,FXD,FILM:15K OHM,0.1%,0.125W,TC=T9MI 19701 5033RE15K00B A3R764 323–0114–00 RES,FXD,FILM:150 OHM,1%,0.5W,TC=T0 91637 CMF65116G150R0F A3R766 323–0172–00 RES,FXD,FILM:604 OHM,1%,0.5W,TC=T0 91637 CMF65116G604ROF A3R767 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R769 322–3354–00 RES,FXD:METAL FILM;47.5K OHM,1%,0.2W,TC=100 91637 CCF501G47501F A3R770 322–3222–00 RES,FXD:METAL FILM;2K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G20000F A3R771 322–3193–00 RES,FXD:METAL FILM;1K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10000F 8–26 Serial no. effective Serial No. Discont’d CCF501G35700F 760A / 760D / 760N Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A3R772 A3R773 Name & Description Mfr. Code Mfr. Part Number 322–3177–00 RES,FXD:METAL FILM;681 OHM,1%,0.2W,TC=100 PPM 91637 CCF50–2G681R0F 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A3R774 322–3267–00 RES,FXD,FILM:5.9K OHM,1%,0.2W,TC=T0MI,SMALL 56845 CCF50–2–G5901FT A3R775 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A3R776 322–3250–00 RES,FXD:METAL FILM;3.92K OHM,1%,0.2W,TC=100 91637 CCF50–2F39200F A3R777 311–2236–00 RES,VAR,TRMR:CERMET;20K OHM,20%,0.5W,0.197 SQ,SIDE ADJUST TK2073 GF06UT2 203 M L A3R778 322–3269–00 RES,FXD,FILM:6.19K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G61900F A3R779 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R780 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R781 322–3193–00 RES,FXD:METAL FILM;1K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10000F A3R782 311–2236–00 RES,VAR,TRMR:CERMET;20K OHM,20%,0.5W,0.197 SQ,SIDE ADJUST TK2073 GF06UT2 203 M L A3R783 322–3246–00 RES,FXD,FILM:3.57K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G35700F A3R784 322–3130–00 RES,FXD:METAL FILM;221 OHM,1%,0.2W,TC=100 PPM 57668 RB20FX221E A3R785 322–3218–00 RES,FXD:METAL FILM;1.82K OHM,1%,0.2W,TC=100 91637 CCF501G18200F A3R786 311–2234–00 RES,VAR,TRMR:CERMET;5K OHM,20%,0.5W,0.197 SQ,TOP ADJUST TK2073 GF06UT2 502 M L A3R787 322–3230–00 RES,FXD,FILM:2.43K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF50–2–G2431FT A3R788 322–3218–00 RES,FXD:METAL FILM;1.82K OHM,1%,0.2W,TC=100 91637 CCF501G18200F A3R789 311–2231–00 RES,VAR,TRMR:CERMET;1K OHM,20%,0.5W,0.197 SQ,TOP ADJUST TK2073 GF06UT2 102 M L A3R790 321–0263–00 RES,FXD,FILM:5.36K OHM,1%,0.125W,TC=T0MI 19701 5043ED5K360F A3R794 322–3222–00 RES,FXD:METAL FILM;2K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G20000F A3R797 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A3R798 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A3R815 321–0720–00 RES,FXD,FILM:60K OHM,1%,0.125W,TC=T0 91637 CMF55–116–G–600 A3R820 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R821 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R824 322–3001–00 RES,FXD:METAL FILM;10 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10R00F A3R842 321–0418–00 RES,FXD,FILM:221K OHM,1%,0.125W,TC=T0MI 19701 5043ED221K0F A3R843 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A3R844 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R845 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A3R846 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A3R847 321–1720–00 RES,FXD,FILM:3.24M OHM,1%,0.125W,TC=T0MI 64537 PME55 3.24 MEGO A3R849 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R851 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R852 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R853 322–3314–00 RES,FXD:METAL FILM;18.2K OHM,1%,0.2W,TC=100 (760A ONLY) 91637 CCF501G18201F A3R854 322–3258–00 RES,FXD:METAL FILM;4.75K OHM,1%,0.2W,TC=100 56845 CCF50–2–G4751FT 760A / 760D / 760N Serial no. effective Serial No. Discont’d 8–27 Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A3R855 A3R856 A3R858 A3R861 Name & Description Mfr. Code Mfr. Part Number 322–3282–00 RES,FXD,FILM:8.45K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G84500F 322–3481–00 RES,FXD,FILM:1M OHM.1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G10003F 308–0549–00 RES,FXD,WW:6.3K OHM,1%,3W 91637 RS2B–B63000F 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A3R863 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A3R864 322–3178–00 RES,FXD,FILM:698 OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF50–2G698ROF A3R865 322–3178–00 RES,FXD,FILM:698 OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF50–2G698ROF A3R866 322–3210–00 RES,FXD:METAL FILM;1.5K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G15000F A3R867 308–0549–00 RES,FXD,WW:6.3K OHM,1%,3W 91637 RS2B–B63000F A3R868 322–3324–00 RES,FXD,FILM:23.2K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF50–2F23201F A3R875 322–3232–00 RES,FXD,FILM:2.55K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G25500F A3R876 322–3296–00 RES,FXD,FILM:11.8K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G11801F A3R877 322–3193–00 RES,FXD:METAL FILM;1K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10000F A3R878 322–3289–00 RES,FXD:METAL FILM;10K OHM,1%,0.2W,TC=100 PPM 91637 CCF50G10001F A3R881 322–3269–00 RES,FXD,FILM:6.19K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G61900F A3R882 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A3R887 322–3097–00 RES,FXD:METAL FILM;100 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G100R0F A3R888 322–3269–00 RES,FXD,FILM:6.19K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G61900F A3R889 322–3324–00 RES,FXD,FILM:23.2K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF50–2F23201F A3R895 322–3296–00 RES,FXD,FILM:11.8K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G11801F A3R896 322–3232–00 RES,FXD,FILM:2.55K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G25500F A3S340 260–2233–00 SWITCH,ROTARY:DIP;BCD,10 POSITION,30V,125MA,5 PIN,GOLD/NICKEL,GLASSREINFORCED NYLON 57856 KDS 10–312 A3TP151 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A3TP248 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A3TP255 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A3TP323 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A3TP351 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A3TP357 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A3TP454 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A3TP548 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A3TP551 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A3TP552 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A3TP554 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 8–28 Serial no. effective Serial No. Discont’d 760A / 760D / 760N Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A3TP568 214–4085–00 A3TP621 Serial no. effective Serial No. Discont’d Mfr. Code Mfr. Part Number TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A3TP672 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A3TP688 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A3TP725 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A3TP745 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A3TP778 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A3TP866 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A3TP885 214–4085–00 TERM,TEST POINT:0.070 ID,0.220 H,0.063 DIAP CB,0.015 X 0.032 BRASS,W/RED NYLON COLLAR 26364 104–01–02 A3U127 160–4232–01 IC,MEMORY:CMOS,EPROM;8K X 8 W/3–STATE OUT (760A ONLY) 80009 160423201 A3U127 160–6134–00 MICROCKT,DGTL:8192 X 8 EPROM,PRGM (760D ONLY) 80009 160613400 A3U127 160–6136–00 MICROCKT,DGTL:8192 X 8 EPROM,PRGM (760N ONLY) 80009 160613600 136–0755–00 SKT,DIP:PCB;FEMSTR,2 X 14,28 POS,0.1 X 0.6 CTR,0.175 H X0.130 TAIL,BECU,TIN,ACCOM 0.008–0.0015 X 0.014–0.022 00779 2–641605–3 A3U132 156–0913–00 IC,DIGITAL:LSTTL,FLIP FLOP;OCTAL D–TYPE, ENABLE 01295 SN74LS377N A3U137 160–4233–01 IC,MEMORY:CMOS,EPROM;8K X 8 W/3–STATE OUT (760A ONLY) 80009 160423301 A3U137 160–6135–00 MICROCKT,DGTL:8192 X 8 EPROM,PRGM (760D ONLY) 80009 160613500 A3U137 160–6137–00 MICROCKT,DGTL:8192 X 8 EPROM,PRGM (760N ONLY) 80009 160613700 136–0755–00 SKT,DIP:PCB;FEM,STR,2 X 14,28 POS,0.1 X 0.6 CTR,0.175 H X0.130 TAIL,BECU,TIN,ACCOM 0.008–0.0015 X 0.014–0.022 00779 2–641605–3 A3U142 156–0913–00 IC,DIGITAL:LSTTL,FLIP FLOP;OCTAL D–TYPE, ENABLE 01295 SN74LS377N A3U146 156–2819–00 IC,CONVERTER:BIPOLAR,D/A;12 BIT,VOLTAGE OUT,REF 13919 DAC80P–CBI–V A3U158 156–0469–00 IC,DIGITAL:LSTTL,DEMUX/DECODER;3–TO–8DECODER 01295 SN74LS138N A3U161 156–0480–02 IC,DIGITAL:LSTTL,GATES 01295 SN74LS08N A3U167 156–0858–00 IC,MISC:CMOS,ANALOG SWITCH;QUAD SPST 1ES66 DG201ACJ/C30248 A3U172 156–0858–00 IC,MISC:CMOS,ANALOG SWITCH;QUAD SPST 1ES66 DG201ACJ/C30248 A3U179 156–2817–00 IC,LINEAR:BIFET,OP–AMP;QUAD 04713 MC34084P A3U208 156–2818–00 IC,LINEAR:TTL,DRVR;8–CHAN SCE DRVR, LOW VOUT(SAT) 0CVK3 UDN2585A Name & Description *MOUNTING PARTS* *END MOUNTING PARTS* *MOUNTING PARTS* *END MOUNTING PARTS* 760A / 760D / 760N 8–29 Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number A3U213 A3U217 Serial no. effective Serial No. Discont’d Name & Description Mfr. Code Mfr. Part Number 156–2818–00 IC,LINEAR:TTL,DRVR;8–CHAN SCE DRVR, LOW VOUT(SAT) 0CVK3 UDN2585A 156–2818–00 IC,LINEAR:TTL,DRVR;8–CHAN SCE DRVR, LOW VOUT(SAT) 0CVK3 UDN2585A A3U223 156–2818–00 IC,LINEAR:TTL,DRVR;8–CHAN SCE DRVR, LOW VOUT(SAT) 0CVK3 UDN2585A A3U308 156–0736–02 IC,DIGITAL:LSTTL,DEMUX/DECODER 01295 SN74LS42N A3U313 156–0736–02 IC,DIGITAL:LSTTL,DEMUX/DECODER 01295 SN74LS42N A3U317 156–0736–02 IC,DIGITAL:LSTTL,DEMUX/DECODER 01295 SN74LS42N A3U357 156–1451–00 IC,LINEAR:BIPOLAR,VR;NEGATIVE,ADJUSTABLE,1.5A,4% 01295 LM337KC A3U361 156–1126–00 IC,LINEAR:BIPOLAR,COMPARATOR;OPEN COLL,200NS 01295 LM311P A3U368 156–1149–00 IC,LINEAR:BIFET,OP–AMP; 27014 LF351N A3U379 156–2817–00 IC,LINEAR:BIFET,OP–AMP;QUAD 04713 MC34084P A3U424 156–0982–02 IC,DIGITAL:LSTTL,FLIP FLOP 01295 SN74LS374N A3U428 156–0865–00 IC,DIGITAL:LSTTL,FLIP FLOP;OCTAL D–TYPE, CLEAR 01295 SN74LS273N A3U432 156–2336–00 IC,DIGITAL:LSTTL,COMPARATOR;8–BIT MAGNITUDE 01295 SN74LS684N A3U436 156–1600–00 IC,DIGITAL:LSTTL,MISC;DUAL RETRIG MNSTBMV 01295 SN74LS123N A3U438 160–4234–00 IC,DIGITAL:STTL,PLD;PAL,16R6,28.5MHZ,180MA 80009 160423400 00779 2–641602–3 *MOUNTING PARTS* 136–0752–00 SOCKET,DIP:PCB;FEMALE,STR,2 X 10,0.3 CTR,0.210 H X 0.128 TAIL,TIN,PHOS BRONZE *END MOUNTING PARTS* A3U445 156–2817–00 IC,LINEAR:BIFET,OP–AMP;QUAD 04713 MC34084P A3U453 156–2817–00 IC,LINEAR:BIFET,OP–AMP;QUAD 04713 MC34084P A3U456 156–1161–00 IC,LINEAR:BIPOLAR,VR;POSITIVE,ADJUSTABLE,1.5A,4% 04713 LM317T *MOUNTING PARTS* 210–0586–00 NUT,PL,ASSEM WA:4–40 X 0.25,STL CD PL TK0435 ORDER BY DESC 211–0008–00 SCREW,MACHINE:4–40 X 0.25,PNH,STL TK0435 ORDER BY DESC *END MOUNTING PARTS* A3U462 156–2817–00 IC,LINEAR:BIFET,OP–AMP;QUAD 04713 MC34084P A3U468 156–1149–00 IC,LINEAR:BIFET,OP–AMP; 27014 LF351N A3U590 156–1156–01 IC,LINEAR:BIFET,OP–AMP;BURN–IN,NOT FOR NEW DSGN 27014 LF356N/A+ (D/C A3U612 156–1225–00 IC,LINEAR:BIPOLAR,COMPTR;DUAL,OPEN COLL,300NS 01295 LM393P A3U623 156–4440–00 IC,DIGITAL:HCTCMOS,COUNTER;4–BIT UP/DOWN DECADE,PRESETTABLE 1CH66 74HCT190N A3U627 156–0865–00 IC,DIGITAL:LSTTL,FLIP FLOP;OCTAL D–TYPE, CLEAR 01295 SN74LS273N A3U630 156–2336–00 IC,DIGITAL:LSTTL,COMPARATOR;8–BIT MAGNITUDE 01295 SN74LS684N A3U635 156–2901–00 IC,LINEAR:BIPOLAR,COMPARATOR;DUAL,10US,LOW OFFSET,LOW POWER 64155 LT1018CN8 A3U638 160–4234–00 IC,DIGITAL:STTL,PLD;PAL,16R6,28.5MHZ,180MA 80009 160423400 136–0752–00 SOCKET,DIP:PCB;FEMALE,STR,2 X 10,0.3 CTR,0.210 H X 0.128 TAIL,TIN,PHOS BRONZE 00779 2–641602–3 156–2817–00 IC,LINEAR:BIFET,OP–AMP;QUAD 04713 MC34084P *MOUNTING PARTS* *END MOUNTING PARTS* A3U645 8–30 760A / 760D / 760N Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number Serial no. effective Serial No. Discont’d A3U654 156–2817–00 IC,LINEAR:BIFET,OP–AMP;QUAD 04713 MC34084P A3U670 156–1156–01 IC,LINEAR:BIFET,OP–AMP;BURN–IN,NOT FOR NEW DSGN 27014 LF356N/A+ (D/C A3U680 156–2815–00 IC,MISC:BIPOLAR,MISC;ANALOG COMPANDOR 1CH66 NE572N A3U708 156–0479–00 IC,DIGITAL:LSTTL,GATES;QUAD 2–INPUT OR 01295 SN74LS32N A3U711 156–0479–00 IC,DIGITAL:LSTTL,GATES;QUAD 2–INPUT OR 01295 SN74LS32N A3U715 156–0733–04 IC,DIGITAL:LSTTL,MULTIVIBRATOR 04713 SN74LS221N A3U818 156–1408–00 IC,MISC:CMOS,TIMER 34371 ICM7555IPA A3U823 156–0039–02 IC,DIGITAL:TTL,FLIP FLOP;DUAL J–K, W/CLEAR 27014 DM7473N A3U825 156–0721–00 IC,DIGITAL:LSTTL,GATES;QUAD 2–INPUT NAND, W/SCHMITT TRIGGER 01295 SN74LS132N A3U828 156–4440–00 IC,DIGITAL:HCTCMOS,COUNTER;4–BIT UP/DOWN DECADE,PRESETTABLE 1CH66 74HCT190N A3U831 156–0865–00 IC,DIGITAL:LSTTL,FLIP FLOP;OCTAL D–TYPE, CLEAR 01295 SN74LS273N A3U835 156–2336–00 IC,DIGITAL:LSTTL,COMPARATOR;8–BIT MAGNITUDE 01295 SN74LS684N A3U838 156–1600–00 IC,DIGITAL:LSTTL,MISC;DUAL RETRIG MONOSTABLE MULTIVIBRATOR 01295 SN74LS123N A3U844 156–2901–00 IC,LINEAR:BIPOLAR,COMPARATOR;DUAL,10US,LOW OFFSET,LOW POWER 64155 LT1018CN8 A3U848 160–4234–00 IC,DIGITAL:STTL,PLD;PAL,16R6,28.5MHZ,180MA 80009 160423400 00779 2–641602–3 Name & Description Mfr. Code Mfr. Part Number *MOUNTING PARTS* 136–0752–00 SOCKET,DIP:PCB;FEMALE,STR,2 X 10,0.3 CTR,0.210 H X 0.128 TAIL,TIN,PHOS BRONZE A3U853 156–2817–00 IC,LINEAR:BIFET,OP–AMP;QUAD 04713 MC34084P A3U873 156–1272–00 IC,LINEAR:BIPOLAR,OP–AMP;DUAL,HIGH OUTPUT DRIVE,LOW NOISE 01295 NE5532P A3U880 156–0158–00 IC,LINEAR:BIPOLAR,OP–AMP;DUAL 01295 MC1458P A3U894 156–1272–00 IC,LINEAR:BIPOLAR,OP–AMP;DUAL,HIGH OUTPUT DRIVE,LOW NOISE 01295 NE5532P A10 671–3637–00 CIRCUIT BD ASSY:CRT SOCKET BOARD 80009 671363700 A10J1 131–5338–00 CONN,HDR:PCB/WIREWRAP,;MALE,STR,1 X 7,0.15 CTR 22526 65561–107 A10J2 131–5337–00 CONN,HDR:PCB/WIREWRAP,;MALE,STR,1 X 4,0.15 CTR 22526 65561–104 A10J3 131–5338–00 CONN,HDR:PCB/WIREWRAP,;MALE,STR,1 X 7,0.15 CTR 22526 65561–107 A10SKT1 136–1289–00 SOCKET:CRT,TUBE;1730,SAFETY CONTROLLED 0LUA3 55595 J100 131–3208–00 CONN,CIRC:XLR,FEMALE,3 POS,SAFTEY CONTROLLED 82389 D3F 211–0097–00 SCREW,MACHINE:4–40 X 0.312,PNH,STL (QUANTITY 2) *END MOUNTING PARTS* *MOUNTING PARTS* TK0435 ORDER BY DESC *END MOUNTING PARTS* 760A / 760D / 760N 8–31 Replaceable Electrical Parts Replaceable Electrical Parts List (Cont.) Component Number Tektronix Part Number J200 131–3208–00 Serial no. effective Serial No. Discont’d Name & Description Mfr. Code Mfr. Part Number CONN,CIRC:XLR,FEMALE,3 POS,SAFTEY CONTROLLED 82389 D3F *MOUNTING PARTS* 211–0097–00 SCREW,MACHINE:4–40 X 0.312,PNH,STL (QUANTITY 2) TK0435 ORDER BY DESC *END MOUNTING PARTS* J300 131–3208–00 CONN,CIRC:XLR,FEMALE,3 POS,SAFTEY CONTROLLED 82389 D3F *MOUNTING PARTS* 211–0097–00 SCREW,MACHINE:4–40 X 0.312,PNH,STL (QUANTITY 2) TK0435 ORDER BY DESC *END MOUNTING PARTS* P110 174–0455–00 CA ASSY,SP,ELEC:20,28 AWG,6.75 L,RIBBON TK1547 TO BE ASSIGNED P135 174–0456–00 CA ASSY,SP,ELEC:34,28 AWG,4.5 L,RIBBON TK1547 TO BE ASSIGNED P198 174–0485–00 CA ASSY,SP,ELEC:3,26 AWG,2.5 L,RIBBON TK1352 TO BE ASSIGNED P398 174–0485–00 CA ASSY,SP,ELEC:3,26 AWG,2.5 L,RIBBON TK1352 TO BE ASSIGNED P668 174–0405–00 CA ASSY,SP,ELEC:3,26 AWG,7.0 L,RIBBON TK1352 TO BE ASSIGNED S1 260–2465–00 SWITCH,PUSH:0.4A,125VAC,W/SOLDER LUG,BUTTON W/YELLOW INDICATOR 31918 602844 80009 174–2648–00 *ATTACHED PARTS* 174–2648–00 CA ASSY,SP: *END ATTACHED PARTS* V1 154–0987–00 ELECTRON TUBE:CRT,D14–375GH/987 (STANDARD ONLY) 80009 154090800 V1 154–0987–16 ELECTRON TUBE:CRT,D14–375WA/987 (OPTION 74 ONLY) 80009 154090816 131–6014–00 **V1 ATTACHED PARTS** CA ASSY,CRT:DISCRETE,ANODE LEAD;CRT,1,22AWG,30KV **END ATTACHED PARTS** W1 179–2997–00 WIRE HARNESS:DESCRETE,CRT ASSY,CPD,5,24 AWG,5,26 AWG,1X4,0.1CTR & 1X7,RCPT X 1X4 & 1X7,0.1 RC 80009 179299700 W3 174–3511–00 CA ASSY,SP:DESCRETE,CPD,4,26 AWG,8.0L,1X7,0.1CTR,RCPT X STRAIN RELIEF,PCB 9M860 174–3511–00 – 344–0111–00 INSUL,SPREADER:DEFL LEADS,POLYPROPYLENE *ATTACHED PARTS* TK1617 NA *END ATTACHED PARTS* 8–32 760A / 760D / 760N Diagrams/Circuit Board Illustrations Section 9 Diagrams/Circuit Board Illustrations Symbols Graphic symbols and class designation letters are based on ANSI Standard Y32.2–1975. Logic symbology is based on ANSI Y32.14–1973 in terms of positive logic. Logic symbols depict the logic function performed and may differ from the manufacturer’s data. Overline, parenthesis, or leading slash indicate a low asserting state. Example: ID CONTROL, (ID CONTROL), or /ID CONTROL. Abbreviations are based on ANSI Y1.1–1972. Other ANSI standards that are used in the preparation of diagrams by Tektronix, Inc. are: Y14.15, 1966 — Drafting Practices. Y14.2, 1973 — Line Conventions and Lettering. Y10.5, 1968 — Letter Symbols for Quantities Used in Electrical Science and Electrical Engineering. American National Standard Institute 1430 Broadway, New York, New York 10018 Component Values Electrical components shown on the diagrams are in the following units unless noted otherwise: 760A / 760D / 760N Capacitors Values one or greater are in picofarads (pF). Values less than one are in microfarads (mF). Resistors Ohms (W). 9–1 Diagrams/Circuit Board Illustrations The following information and special symbols may appear in this manual. Assembly Numbers Each assembly in the instrument is assigned an assembly number (e.g., A20). The assembly number appears on the diagram (in circuit board outline), circuit board illustration title, and lookup table for the schematic diagram. The Replaceable Electrical Parts List is arranged by assembly number in numerical sequence; the components are listed by component number. Example: Chassis–mounted components have no Assembly No. prefix. See end of Replaceable Electrical Parts List Component Number Assembly Number Schematic Circuit Number Grid Coordinates The schematic diagram and circuit board component location illustration have grids. A lookup table with the grid coordinates is provided for ease of locating the component. Only the components illustrated on the facing diagram are listed in the lookup table. When more than one schematic diagram is used to illustrate the circuitry on a circuit board, the circuit board illustration will only appear opposite the first diagram; the lookup table will list the diagram number of other diagrams that the other circuitry appears on. DECOUPLED OR FILTERED VOLTAGE REAR PANEL INPUT +12V3 J1 R5 1.0 7 2 3 BNC (FEMALE) IC TYPE +12V PAD C1 10UF 4 -12V U1 741 6 R500 20K CHANGED PART P1 J1 WIRE STRAP MODULE PORTS NEGATIVE TP1 123 NC W4 0 OHM REFER TO WAVEFORM FRONT PANEL NOMENCLATURE ROTATE BASE DRIVE & SNUBBER PLUG SCREWDRIVER ADJUSTMENT (VIDEO) R100 /VIDEO 2 2 +11.8V CLOCKWISE AJUSTMENT R55 100.0 R4 20K +15V Q8 SEE PARTS LIST FOR SELECTION CRITERIA PART NAME, SCHEMATIC & BOARD REF W751 R85 SEL -11.8V R56 100.0 FUNCTION BLOCK TITLE HEAT SINK H J3 2 1 Q6 12 A3 ANALOG BOARD SQUARE PIN CONNECTOR C27 0.1UF -15V SEE PARTS LIST FOR EARLIER VALUES AND SERIAL NUMBER RANGES. CIRCUIT BOARD OUTLINE PART OF A1 MAIN BOARD INSTRUMENT NAME VERTICAL INPUT SCHEMATIC NAME & NUMBER ASSEMBLY NUMBER A1 1 COMPONENT LOCATOR GRID 9–2 760A / 760D / 760N A3 Main Board Diagram Component Locator C125 C127 C132 C145 C148 C149 1 1 1 1 1 3 G3 G3 G3 H3 G2 G4 C165 C172 C179 C187 C190 4 1 1 1 1 G3 G2 G2 C2 B2 C206 C211 C215 C251 C254 2 1 3 3 1 H1 H3 H1 G5 F5 C255 C258 C261 C262 C263 1 1 1 1 1 F5 F5 H3 G3 H2 C267 C268 C279 C287 C290 C324 C328 C332 C333 C338 C343 C344 C349 C361 C368 C369 C379 C387 C390 C406 C411 C415 C436 C445 C448 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 4 1 1 1 1 1 1 1 1 2 G4 H2 G4 C3 B3 G3 G3 H3 H3 H3 G3 G4 A1 H4 H4 D1 H2 C4 B4 G3 G3 H3 H3 G2 C1 C450 C453 C457 C458 C459 1 1 1 4 4 H4 G2 F2 D2 D3 C461 C462 C468 C469 C479 4 1 1 1 1 D4 G5 G2 G5 G5 C487 C490 1 1 C5 B4 C502 C510 C523 4 5 1 G5 E3 H3 C527 C530 C535 C536 C538 1 1 1 2 1 G4 G4 H2 D4 G4 C543 C545 C546 C547 C548 2 1 2 2 2 D1 H5 B1 C1 A4 C554 C556 C557 C562 C570 1 1 1 1 5 H2 F2 F2 H2 C4 C571 C573 C574 C575 C578 1 5 5 5 5 G2 B5 B4 A4 A4 C580 C581 C584 C586 C587 1 5 5 5 5 G2 A1 B1 A1 B2 C588 C589 C612 C616 C618 5 1 1 5 5 C1 G2 H4 D3 D3 C646 C649 C650 C660 C663 1 2 2 1 1 H5 C4 C4 C1 B1 C670 C690 C695 C708 C711 1 1 5 1 1 H5 G5 D1 H4 H4 C712 C715 C718 C724 C725 5 1 3 2 2 C3 G4 A3 B3 A3 C728 C731 C735 C738 C744 1 1 1 1 1 G4 G4 H4 H4 H2 C745 C746 C748 C753 C754 1 2 1 1 1 H2 B4 H4 H2 G5 CR565 CR566 CR616 CR638 CR642 4 4 5 2 2 D3 D3 D3 E4 B4 CR643 CR658 CR659 CR742 CR743 2 1 1 2 2 C2 B3 G4 G4 CR746 CR747 CR757 CR758 CR780 3 1 3 3 3 D1 G5 B1 C1 C1 C870 C872 C873 C874 C876 5 5 1 1 5 C880 C881 C890 C891 C894 C895 C897 C755 C758 C764 C768 C772 3 1 1 5 5 A1 C2 B2 D4 B4 C776 C778 C785 C794 C815 5 5 5 1 3 G3 F4 B1 G3 C3 C818 C819 C823 C825 3 3 1 1 C841 C853 C854 C855 C858 Q769 Q776 Q795 5 5 5 G5 G3 G2 R344 R347 R351 3 2 2 D5 A1 C1 B4 C1 C1 B4 B4 Q861 Q864 Q865 Q883 Q884 Q885 Q886 5 5 5 5 5 5 5 G4 G4 G4 G2 G1 G2 G1 R352 R353 R354 R355 R356 2 2 2 3 3 C4 C1 C4 C1 C1 2 2 1 1 5 B4 B4 C2 C2 G3 R122 R123 R124 R155 R156 2 2 2 1 1 H3 H2 H1 F4 F4 CR790 CR791 CR846 CR850 CR851 5 5 3 3 3 G3 H3 E1 B1 B1 R157 R158 R168 R169 R170 4 4 4 4 4 C4 C4 D4 C4 C4 E4 E4 G3 H5 F5 CR852 CR853 CR854 CR855 CR876 3 3 3 3 5 B1 B1 B1 B1 G3 R174 R175 R176 R177 R180 4 4 4 1 1 A2 A2 A2 D3 D3 1 1 5 5 1 G3 H5 E1 E2 H5 J115 J153 J185 J186 J191 2 1 1 1 1 H2 B5 D3 D2 B3 R181 R182 R183 R187 R188 1 1 1 1 1 D3 D3 D3 B2 B2 5 5 F2 F1 J192 J198 J273 J373 J385 1 1 4 4 1 B3 B2 B2 B3 D4 R195 R196 R247 R248 R252 R253 1 1 3 3 3 3 B2 B2 G4 G4 G4 G4 J386 J391 J392 J398 J409 1 1 1 1 5 D4 B4 B4 B3 E3 R255 R262 R263 R264 R265 2 4 4 4 4 C1 G3 G3 G3 G3 J413 J419 J657 J658 J663 4 4 1 1 1 A4 H5 D1 D1 B1 R274 R275 R276 R277 R280 1 1 1 1 1 E2 D2 C2 D3 C3 J664 J668 J862 J886 1 1 5 5 B1 B1 H4 H1 1 1 1 1 2 D3 C3 B3 B3 H1 CR186 CR187 CR254 CR255 CR286 1 1 1 1 1 C2 C2 F5 F5 C3 CR287 CR356 CR386 CR387 CR442 1 1 1 1 2 C3 F2 C3 C4 B1 CR443 CR456 CR458 CR459 CR486 2 1 4 4 1 B1 F2 D2 D2 C4 CR487 CR536 CR542 CR543 CR545 1 2 2 2 2 C5 E1 B1 B1 B1 CR546 CR558 CR559 CR563 CR564 2 4 4 4 4 B1 D2 D2 D3 D3 L513 5 E3 R281 R282 R287 R288 R306 Q507 Q603 Q604 Q620 Q695 2 4 4 5 5 C3 G5 G5 D3 G2 R311 R315 R319 R320 R321 2 3 2 2 2 H4 H1 H3 H3 H3 Q761 Q766 5 5 G4 G5 R336 R337 3 3 D5 D5 R357 R358 R359 R362 R363 1 4 4 4 4 F5 E2 E2 D2 D3 R364 R366 R370 R371 R373 4 4 4 4 4 C2 B2 C2 B2 A3 R374 R375 R376 R380 R381 4 4 1 1 1 A3 A3 D4 D4 D4 R382 R383 R387 R388 R400 1 1 1 1 4 D4 D4 B4 B4 G5 R423 R441 R443 R446 R447 3 2 2 2 2 E3 B1 A1 B1 C1 R451 R455 R456 R458 R460 2 1 1 4 4 C1 F3 F2 D2 D2 R463 R466 R467 R469 R470 4 4 4 4 4 B3 C3 B3 C3 C3 R471 R472 R473 R474 R475 5 4 5 4 1 B1 B3 B2 A3 E4 R476 R477 R478 R480 R481 1 1 1 1 1 D4 C4 D4 C4 D4 R482 R487 R488 R495 R496 1 1 1 1 1 C4 B5 B4 B4 B4 R520 R541 1 2 B5 D1 R543 R546 R547 R548 R550 2 2 2 2 2 B1 A4 C1 C1 C4 R551 R553 R554 R556 R558 2 3 3 1 4 C4 C1 C1 F2 C2 R560 R562 R563 R564 R565 R566 4 4 4 4 5 5 D1 C3 D3 D3 B4 B4 R568 R576 R577 R580 R582 R583 5 5 5 5 5 5 C4 A4 A4 A1 A1 A1 R593 R594 R600 R601 R602 5 5 5 5 4 C1 D1 H4 H2 G5 R603 R604 R605 R606 R607 4 4 2 5 5 G5 H5 C3 C3 C2 R608 R609 R610 R613 R615 5 5 5 5 5 D2 C3 D3 D3 D2 R617 R632 R637 R641 R643 2 2 2 2 2 A3 D4 D1 B3 A4 R646 R647 R648 R649 R652 2 2 2 2 1 B4 C4 C4 C4 E1 R673 R674 R675 R676 R677 5 5 5 5 5 B4 B5 C4 C4 A5 R678 R682 R683 R684 5 5 5 5 C4 C1 A2 B2 R685 R686 R687 R688 R693 5 5 5 5 5 C1 C1 B1 C1 D2 R694 R700 R716 R717 R720 5 1 3 3 5 D2 B5 A2 A3 D3 R732 R733 R734 R735 R736 2 2 2 2 2 D4 D4 D4 E4 D1 R737 R738 R743 R751 2 2 2 1 D1 D1 B4 D1 R752 R753 R755 R756 R757 1 1 1 1 1 C1 D2 C2 D1 C1 R758 R759 R760 R761 R762 3 5 5 5 1 A1 G5 H4 G5 B2 R763 R764 R766 R767 R769 1 1 1 5 5 B2 B1 B1 H2 D4 R770 R771 R772 R773 R774 5 5 5 5 5 D4 D4 G5 G5 D4 5 5 5 5 5 G5 G3 A5 G3 G3 5 5 5 5 F3 F3 A2 H2 R653 R655 R656 R657 1 1 1 1 D2 D1 D1 D1 R775 R776 R777 R778 R779 R658 R660 R661 R672 1 1 1 5 D1 B1 B1 C4 R780 R781 R782 R783 R784 5 TP552 TP554 TP568 TP621 TP672 2 1 1 1 5 C4 E1 C5 D5 C4 G2 R785 R786 R787 R788 R789 5 5 5 5 5 G2 G2 G2 G2 D1 R790 R794 R797 R798 R815 5 5 5 5 3 D1 G2 G2 G2 C3 TP688 TP725 TP745 TP778 TP866 TP885 5 3 1 1 5 5 C1 C5 D5 D5 F3 F3 R820 R821 R824 R842 R843 2 2 2 3 3 B3 B3 A3 D1 D1 U127 U132 U137 U142 U146 3 3 3 3 3 D5 E5 D4 E4 F4 R844 R845 R846 R849 R851 3 3 3 3 3 D1 E1 D1 B1 A1 U158 U161A U161B U167 U172 4 4 4 4 4 E2 F3 F2 H3 H1 R852 R853 R854 R855 R856 3 3 3 3 4 B1 C1 B1 C1 H1 U179A U179B U179C U179D U208 4 1 1 1 2 A2 E2 C3 C2 G1 R857 R858 R861 R863 R864 3 5 5 5 5 C1 G4 H4 G4 G5 U213 U217 U223 U308 U313 2 3 2 2 2 G4 G1 G3 G1 G4 R865 R866 R867 R868 R875 5 5 5 5 5 G5 G5 G4 D4 E4 U317 U357 U361 U368 U379A 3 1 4 4 4 G1 F5 E2 C2 A3 R876 R877 R878 R881 R882 5 5 5 5 5 E4 F3 F3 G1 H1 U379B U379C U379D U424 U428 1 1 1 3 2 E4 C4 C4 E3 D2 R887 R888 R889 R895 R896 5 5 5 5 5 G1 G1 D1 E2 E2 U432 U436A U436B U438 U445A 2 2 2 2 2 E2 D2 D4 F1 A1 S340 3 C5 TP151 TP248 TP255 TP323 TP351 1 3 1 1 1 C5 H4 G5 D5 E2 U445B U445C U445D U453A U453B 2 2 2 2 2 A1 B1 B1 C1 C4 TP357 TP454 TP548 TP551 1 3 1 2 G2 D1 E4 C1 U453C U453D U456 U462A U462B 2 3 1 4 4 C2 C1 F2 C2 C2 U462C U462D U468 U590 U612A U612B 4 4 4 5 5 5 C3 C3 C3 C1 C3 D3 U623 U627 U630 U635A U635B 3 2 2 2 2 C5 D2 E5 D4 D1 U638 U645A U645B U645C U645D 2 2 2 2 2 F4 A4 A4 B4 B4 U654A U654B U654C U654D U670 1 1 1 1 5 E1 E1 C2 C1 C4 U680A U680B U708A U708B 5 5 2 2 B4 B1 F1 F1 U708C U708D U711A U711B U711C 2 2 3 3 3 F4 F4 F1 F1 F1 U711D U715A U715B U818 U823A 3 3 3 3 2 F2 B3 C3 B3 B3 U823B U825A U825B U825C U828 2 2 2 3 3 B2 A3 B3 C3 C4 U831 U835 U838A U838B U844A 3 3 3 3 3 D2 E2 D1 C2 D1 U844B U848 U853A U853B U853C 3 3 3 3 3 D1 F1 B1 B1 B1 U853D U873A U873B U880A 3 5 5 5 B1 E4 F4 F3 U880B U894A U894B 5 5 5 F3 E1 F2 A3 Main Board Static Sensitive Devices See Maintenance Section Assembly A3 Schematic Diagram <1> Component Locator Chart C125 C127 C132 C145 C148 G3 G3 G3 H3 G2 C261 C262 H3 G3 C338 C343 C344 C361 C368 H3 G3 G4 H4 H4 C450 C453 H4 G2 C535 C538 C545 C554 C556 H2 G4 H5 H2 F2 C663 C670 B1 H5 C748 C753 C754 C758 C764 H4 H2 G5 C2 B2 C894 H5 C5 C1 C1 C2 C2 B4 B4 C172 C179 C187 C190 C211 G2 G2 C2 B2 H3 C379 C387 C390 C406 C411 H2 C4 B4 G3 G3 C557 C562 C571 C580 C589 F2 H2 G2 G2 G2 C794 C823 C825 C853 C873 G3 G4 G4 G5 G3 C2 C2 F5 F5 C3 CR487 CR658 CR659 CR757 CR758 J391 J392 CR186 CR187 CR254 CR255 CR286 CR287 CR356 CR386 CR387 CR456 C3 F2 C3 C4 F2 J153 J185 J186 J191 J192 B5 D3 D2 B3 B3 J398 J657 J658 J663 J664 J668 B3 D1 D1 B1 B1 B1 R155 R156 R177 R180 R181 F4 F4 D3 D3 D3 C254 C255 C258 F5 F5 F5 C263 C267 C268 C279 C287 C290 C324 C328 C332 C333 H2 G4 H2 G4 C3 B3 G3 G3 H3 H3 C415 C436 C445 H3 H3 G2 C457 C462 C468 C469 C479 C487 C490 C523 C527 C530 F2 G5 G2 G5 G5 C5 B4 H3 G4 G4 C612 C646 C660 H4 H5 C1 C690 C708 C711 C715 C728 C731 C735 C738 C744 C745 G5 H4 H4 G4 G4 G4 H4 H4 H2 H2 C874 C880 C881 H5 G3 H5 CR486 C4 J198 J385 J386 B2 D4 D4 R182 R183 R187 R188 R195 D3 D3 B2 B2 B2 R196 R274 R275 R276 R277 B2 E2 D2 C2 D3 R280 C3 R281 R282 R287 R288 D3 C3 B3 B3 R455 R456 F3 F2 R357 R376 R380 R381 R382 F5 D4 D4 D4 D4 R475 R476 R477 R478 R480 E4 D4 C4 D4 C4 R383 R387 R388 D4 B4 B4 R481 R482 R487 R488 R495 D4 C4 B5 B4 B4 760A / 760D / 760N R700 R751 R752 R753 B5 D1 C1 D2 TP255 TP323 TP351 TP357 G5 D5 E2 G2 D1 D1 D1 D1 B1 R755 R756 R757 R762 R763 R764 R766 C2 D1 C1 B2 B2 B1 B1 TP548 TP554 TP568 TP621 TP745 TP778 E4 E1 C5 D5 D5 D5 B1 TP151 C5 U179B U179C E2 C3 R496 R520 R556 R652 R653 B4 B5 F2 E1 D2 R655 R656 R657 R658 R660 R661 U179D U357 U379B C2 F5 E4 U379C U379D U456 U654A U654B C4 C4 F2 E1 E1 U654C U654D C2 C1 % $'!( &# ! $ !! ! $ ! ! ! ! ! ! ! $ ! " % $ ! " $# #!# )* $ ! ! $ $#" ! ! ! ! ! ! ! ! ! $ ! VOLTAGE REGULATORS AND DECOUPLING % $ % )* $' $ # )* # )* LEFT INPUT AMPLIFIER $# ""#%#( )* ! % ! ! % # % # &# ! $ !! ! $ ! ! ! ! % ! ! ! $ ! " % $ ! " $# #!# )* ! $ ! )* % % % % % % % % $ $ $ $ )* % % % $ $ $ ! % $ $ )* % $ $ ! # $ % ! $ % # )* RIGHT INPUT AMPLIFIER $# ""#%#( $ % $ % $ % $ $ % $ % $ $ % $ $ % $ $ # ! $ $#" ! ! ! ! ! % $ ! ! ! ! % % !# &# ! !! % $ ! ! ! ! ! ! $ ! " % $ ! " $# #!# AUX INPUT AMPLIFIER % % $# ""#%#( )* ! % # $ )* !# )* % )* )* % $ % $ % $ % $ $ % % % $ % $ $ % $ $ % % % $ % $ $ % $ $ % % % % $ $ % $ $ $ $ ! ! % $ $ % % $ ! $ ! % ! $ % $ % $ % $ $ $ $ $ $ $ $ % $ $ $ $ # ! ! ! ! ! ! % $ ! &! "$ ( # #"#( ! # # # # "#!""#!" % $ $"! ! % $ $ % # !!! # % $ $ % % % % % ! # $" % $ ! ! #"#( ! % % ! #" # ! ! ! ! ! % $ % % % $ % $ % % $ % $ % % $ % $ % % $ $ % $ % $ % ! % % % !#! 760A/760D/760N STEREO AUDIO MONITOR INPUT AMPLIFIERS AND DECOUPLING Schematic Diagram <2> Component Locator Chart Assembly A3 760A / 760D / 760N C206 C349 C448 C536 C543 H1 A1 C1 D4 D1 Q507 C3 R632 R637 D4 D1 R122 R123 R124 R255 R306 H3 H2 H1 C1 H1 U436A U436B U438 D2 D4 F1 R641 R643 R646 R647 R648 B3 A4 B4 C4 C4 R311 R319 R320 R321 R347 H4 H3 H3 H3 A1 U445A U445B U445C U445D U453A A1 A1 B1 B1 C1 C546 C547 C548 C649 C650 B1 C1 A4 C4 C4 R649 R732 R733 R734 R735 C4 D4 D4 D4 E4 C724 C725 C746 B3 A3 B4 R351 R352 R353 R354 R441 C1 C4 C1 C4 B1 U453B U453C U627 U630 U635A C4 C2 D5 E5 D4 CR442 CR443 CR536 CR542 CR543 B1 B1 E1 B1 B1 R736 R737 R738 R743 R820 D1 D1 D1 B4 B3 R443 R446 R447 R451 R541 A1 B1 C1 C1 D1 U635B U638 U645A U645B U645C D1 F4 A4 A4 B4 CR545 CR546 CR638 CR642 CR643 B1 B1 E4 B4 B4 R821 R824 B3 A3 TP551 TP552 C1 C4 R543 R546 R547 R548 R550 B1 A4 C1 C1 C4 U645D U708A U708B U708C U708D B4 F1 F1 F4 F4 CR742 CR743 CR746 CR747 B4 B4 B4 B4 U208 U213 U223 U308 U313 G1 G4 G3 G1 G4 U823A U823B U825A U825B B3 B2 A3 B3 J115 H2 R551 R605 R617 C4 C3 A3 U428 U432 D2 E2 R441 10.0K 2 3 -LEFT C349 10UF R347 500 4 +5V 1 U445A 1 MC34084 1 U445C MC34084 CR442 10 -12V CHANNEL MATCH +12V R543 10.0K R547 8.45K CR546 8 9 U453A MC34084 C448 .33UF C546 5.6PF 7 5 U445B MC34084 CR545 CR542 R446 4.75K 12 14 3 1 4 R255 43.2K -12V 1 U453C MC34084 10 LEFT DYNAMIC RESPONSE CONTROL (PPM) 2 C X R X Q C L B 5 J CK Q A[0..7] PEAK HOLD ON/OFF DAC 3 A0 A1 A2 A3 A4 A5 A6 A7 U823B 7473 +5V +5V R617 1.00K 1 PEAKHOLD B4 4 R821 10.0K +5V U825A 74LS132 3 2 R824 10.0 4 U825B 74LS132 5 4 LA3 A2 A3 O0 O1 O2 O3 O4 O5 O6 O7 VCC GND-SUB L10 L9 L8 L7 L6 L5 L4 L3 18 17 16 15 14 13 12 11 9 10 R306 10.0 6 5 CLK OE 13 12 U708A 74LS32 U208 UDN2585 I0 I1 I2 I3 I4 I5 I6 I7 +5V C206 .1UF U708B 74LS32 R124 10.0 L2 R123 10.0 L1 3 4 7 8 13 14 17 18 11 1 U428 74LS273 D1 D2 D3 D4 D5 D6 D7 D8 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 2 5 6 9 12 15 16 19 2 4 6 8 11 13 15 17 3 5 7 9 12 14 16 18 P0 P1 P2 P3 P4 P5 P6 P7 19 P=Q 1 P>Q Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 CLK CLR J 1 CK 3 R D K Q R320 10.0 VCC GND C725 39UF 12 B4 Q 13 4 11 +5V PHLED R605 1.00K J115 1 2 3 4 5 6 7 8 9 10 11 12 R4 13 R1 14 R8 15 R7 16 R2 17 R3 18 R10 19 R9 20 R5 21 R6 22 23 AU4 24 AU1 25 AU8 26 AU7 27 AU2 28 AU3 29 AU10 30 AU9 31 AU5 32 AU6 33 34 (LGATE) LDELAY 3 2 14 6 LDELAY C724 39UF 3 1 1 2 3 4 5 6 7 8 L4 L1 L8 L7 L2 L3 L10 L9 L5 L6 U432 74LS684 E1 (PK_ON) R820 10.0K A0 A1 A2 A3 A4 A5 A6 A7 H4 8 Q K 2 A1 1 2 3 4 5 6 7 9 10 11 LEFT SIGNAL PEAK PROCESSOR 3 3 R D 14 O0 O1 O2 O3 O4 O5 O6 O7 O8 O9 LTIMEOUT 4 Q D4 10 LA1 LA2 U308 74LS42 A0 13 A[0..7] 9 1 11 C2 19 18 17 16 15 14 13 12 15 U436A 74LS123 +5V 6 C3 IO1 O2 O3 O4 O5 O6 O7 IO8 LA0 1 5 A 8 9 7 (PK_BLK) I1 I2 I3 I4 I5 I6 I7 I8 R541 221K C543 39UF OFFSET F5 2 3 4 5 6 7 8 9 +5V R353 1.00M R351 20K R548 18.2K 13 (LCMP) 3 R451 2.00K +12V U438 16R6 CR536 R736 100 -12V U445D MC34084 +5V R637 100 7 6 1 1 C547 .1UF R737 10.0K 5 1 2 R447 3.24M CR543 6 TP551 4 3 U635B LT1018 R738 100 LA[0..3] LA[0..3] 3 CR443 E2 1 LEFT BAR ANODE DRIVER F3 +12V R443 10.0K R321 10.0 4 1 2 3 4 5 6 7 8 Q507 G1 U823A 7473 3 AUX1 AUX2 R641 10.0K U223 UDN2585 O0 O1 O2 O3 O4 O5 O6 O7 I0 I1 I2 I3 I4 I5 I6 I7 VCC GND-SUB 18 17 16 15 14 13 12 11 9 10 AU1 AU2 R122 10.0 R1 R319 10.0 R2 +5V +12V R643 10.0K 2 4 CR643 C548 10UF -RIGHT U645A 1 MC34084 1 R546 500 CHANNEL MATCH 6 5 CR642 R743 10.0K -12V E4 1 +5V 1 3 U645C MC34084 10 9 8 CR747 U453B MC34084 R648 8.45K 5 C650 .33UF C746 5.6PF R647 3.24M CR743 7 U645B MC34084 R646 4.75K 3 12 R732 100 13 R649 18.2K U436B 74LS123 9 10 DIGITAL GROUND ANALOG GROUND 7 Q C L Q 2.00M 760N 2.00M A0 A1 A2 A3 A4 A5 A6 A7 RDELAY 3 4 7 8 13 14 17 18 11 1 U627 74LS273 D1 D2 D3 D4 D5 D6 D7 D8 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 2 5 6 9 12 15 16 19 2 4 6 8 11 13 15 17 3 5 7 9 12 14 16 18 U630 74LS684 P0 P1 P2 P3 P4 P5 P6 P7 11 13 12 U708D 74LS32 10 LA3 13 A2 A3 1 2 3 4 5 6 7 8 U213 UDN2585 I0 I1 I2 I3 I4 I5 I6 I7 O0 O1 O2 O3 O4 O5 O6 O7 VCC GND-SUB 8 9 R10 R9 R8 R7 R6 R5 R4 R3 18 17 16 15 14 13 12 11 9 10 R311 10.0 U708C 74LS32 +5V AU[3..10] 3 RIGHT BAR ANODE DRIVER P=Q P>Q 19 1 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 CLK CLR (RGATE) RDELAY 760A/760D/760N STEREO AUDIO MONITOR 19 18 17 16 15 14 13 12 1 2 3 4 5 6 7 9 10 11 H1 RTIMEOUT A0 A1 A2 A3 A4 A5 A6 A7 NOTE: R447, R647 3.24M CLK OE IO1 O2 O3 O4 O5 O6 O7 IO8 A1 O0 O1 O2 O3 O4 O5 O6 O7 O8 O9 AU[3..10] 5 12 +5V 760D I1 I2 I3 I4 I5 I6 I7 I8 14 12 U313 74LS42 A0 RIGHT SIGNAL PEAK PROCESSOR 1 1 760A 1 11 LA1 LA2 U638 16R6 15 R X A B C2 R632 221K 6 C X -12V RIGHT DYNAMIC RESPONSE CONTROL (PPM) 2 3 4 5 6 7 8 9 +5V C536 39UF R550 43.2K OFFSET (RCMP) U635A LT1018 4 R354 1.00M R352 20K LA0 CR638 R735 100 1 2 +12V U645D MC34084 14 R734 10.0K 8 R551 2.00K C649 .1UF CR746 CR742 TP552 R733 100 7 6 +5V +12V PART OF A3 MAIN BOARD GRAPH DRIVERS 2 J115 CONNECTS TO J135 8 A2 FRONT PANEL BOARD Schematic Diagram <3> Component Locator Chart Assembly A3. 760A / 760D / 760N C149 C215 C251 C718 C755 C815 G4 H1 G5 A3 A1 C3 R253 R315 G4 H1 C818 C819 C841 C854 C855 C858 C2 B3 D1 B1 C1 C1 R336 R337 R344 R355 R356 D5 D5 D5 C1 C1 R423 R553 R554 R716 R717 E3 C1 C1 A2 A3 CR846 CR850 CR851 CR852 E1 B1 B1 B1 R758 R815 R842 R843 A1 C3 D1 D1 CR853 CR854 CR855 B1 B1 B1 R247 R248 R252 G4 G4 G4 R844 R845 R846 R849 R851 D1 E1 D1 B1 A1 R852 R853 R854 R855 R857 B1 C1 B1 C1 C1 U711B U711C U711D U715A U715B F1 F1 F2 B3 C3 S340 C5 TP248 TP454 TP725 H4 D1 C5 U818 U825C U828 U831 U835 U838A B3 C3 C4 D2 E2 D1 U127 U132 U137 U142 U146 D5 E5 D4 E4 F4 U838B U844A U844B U848 U853A C2 D1 D1 F1 B1 U217 U317 U424 U453D U623 U711A G1 G1 E3 C1 C5 F1 U853B U853C U853D B1 B1 B1 R849 10.0K R851 10.0K 2 4 C755 10UF SELECT_BAR 1 1 R758 500 CR851 1 3 U853A MC34084 10 CHANNEL MATCH 8 9 R852 10.0K H1 4 U853C MC34084 CR850 -12V +12V NOTE: R857 +12V 760A 3.24M 3 760D 2.00M 2 760N 2.00M U453D MC34084 12 C858 .33UF C854 5.6PF 13 R857 3.24M 7 5 CR852 U853B MC34084 R854 4.75K R846 100 12 R853 18.2K 13 R356 43.2K 1 2 AUX DYNAMIC RESPONSE CONTROL (PPM) 9 Q A C L B Q C3 2 A Q C L B Q ADELAY C718 2700PF 5 C819 .01UF U818 7555 7 6 2 DIS THR TRIG CV RST 4 8 1 +5V A0 A1 A2 A3 A4 A5 A6 A7 U835 74LS684 3 4 7 8 13 14 17 18 11 1 U831 74LS273 D1 D2 D3 D4 D5 D6 D7 D8 2 4 6 8 11 13 15 17 2 5 6 9 12 15 16 19 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 P0 P1 P2 P3 P4 P5 P6 P7 3 5 7 9 12 14 16 18 C2 U825C 74LS132 9 3 2 Q B C L Q U715A 74LS221 6 9 13 4 +5V 10 7 C X R X A Q B C L A3 A2 A1 A0 A7 A6 A5 A4 Q U715B 74LS221 +5V 4 11 5 14 15 1 10 9 A[0..7] A[0..7] 2 +5V R315 10.0 C215 .1UF G3 U711B 74LS32 AUX2 AUX1 9 2 8 U711C 74LS32 12 +5V U711D 74LS32 1 P>Q 11 13 19 4 11 5 14 15 1 10 9 2 CE LD D/U CLK QA QB QC QD A0 A1 A2 A3 A4 A5 A6 A7 A0 A1 A2 A3 3 2 6 7 13 12 U623 74HCT190N CE LD D/U CLK A B C D 2 3 4 5 6 7 8 9 E1 2 LA3 LA2 LA1 LA0 LA7 LA6 LA5 LA4 2 5 6 9 12 15 16 19 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 LA[0..3] B5 CLK OC LA[4..7] LA[4..7] SCALE SHAPER/ LOOK–UP TABLE D2 U828 74HCT190N A B C D D0 D1 D2 D3 D4 D5 D6 D7 11 1 DOWN COUNTER +5V 5 9 10 H4 4 12 RCO MX/MN CLOCK VCC GND-SUB 6 LA[0..3] U424 74LS374 3 4 7 8 13 14 17 18 5 1 1 3 CLOCK A3 +5V QA QB QC QD RCO MX/MN A4 A5 A6 A7 3 2 6 7 13 12 +5V +5V +5V TP725 R336 10.0K R337 10.0K R344 10.0K 1 A0 A1 A2 A3 A4 A5 A6 A7 2 4 5 8 S340 EXPAND_SCALE B4 4 +5V 10 9 8 7 6 5 4 3 25 24 21 23 2 27 20 22 10 9 8 7 6 5 4 3 25 24 21 23 2 27 20 22 U137 2764 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 PGM CE OE D0 D1 D2 D3 D4 D5 D6 D7 PGM CE OE 3 4 7 8 13 14 17 18 11 1 NC VPP D0 D1 D2 D3 D4 D5 D6 D7 NC VPP U142 74LS377 D0 D1 D2 D3 D4 D5 D6 D7 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 2 5 6 9 12 15 16 19 B12 B11 B10 B9 B8 B7 B6 B5 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 CLK CE 12 11 10 9 8 7 6 5 4 3 2 1 1 +5V 18 17 14 13 8 7 4 3 11 12 13 15 16 17 18 19 +5V U132 74LS377 13 R248 7.5M U146 DAC80P B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1(MSB) 26 1 11 U127 2764 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 11 12 13 15 16 17 18 19 +12V DAC NC 6.3 REF GAINADJ IOUT REFIN OFFSET SC SC SC VCC+ GND VCC- C149 .01UF 24 23 R252 100K GAIN -12V TP248 15 16 2 +12V 17 R247 2.7M 20 19 18 22 21 14 C2 DAC R253 100K OFFSET +12V -12V -12V C251 1UF CE CLK D7 D6 D5 D4 D3 D2 D1 D0 Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0 19 16 15 12 9 6 5 2 B4 B3 B2 B1 E1 (PK_BLK) 2 26 1 +5V CLOCK 760A/760D/760N STEREO AUDIO MONITOR AU[3..10] 2 R815 60.0k C815 120PF A A2 O0 O1 O2 O3 O4 O5 O6 O7 AU10 AU9 AU8 AU7 AU6 AU5 AU4 AU3 +5V +5V 1 A1 I0 I1 I2 I3 I4 I5 I6 I7 18 17 16 15 14 13 12 11 (AGATE) ADELAY +5V 1 5 O0 O1 O2 O3 O4 O5 O6 O7 O8 O9 AU[3..10] U217 UDN2585 1 2 3 4 5 6 7 8 CLK CLR R423 10K R X LA3 CLK OE A0 1 2 3 4 5 6 7 9 10 11 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 1 1 4 4 U317 74LS42 8 10 VCC GND C X P=Q E1 OUT 12 U711A 74LS32 ATIMEOUT 4 C818 .1UF R717 8.25K 1 10 A0 A1 A2 A3 A4 A5 A6 A7 +5V 19 18 17 16 15 14 13 12 13 3 +5V 12 +5V MASTER CLOCK IO1 O2 O3 O4 O5 O6 O7 IO8 14 2 13 1 1 R716 432 1 11 I1 I2 I3 I4 I5 I6 I7 I8 R X +5V 5 2 3 4 5 6 7 8 9 15 LA1 LA2 U838A 74LS123 3 R X C X 10 1 5 7 6 (PK_ON) R842 110.0K C X -12V U838B 74LS123 (ACMP) R845 100 1 4 U848 16R6 CR846 7 C841 39UF OFFSET LA0 R844 10.0K 6 AUX BAR ANODE DRIVER +5V +5V R554 1.00M R553 20K U844B LT1018 R843 100 +12V U853D MC34084 14 14 R355 2.00K C855 .1UF CR854 TP454 +5V 5 CR853 6 AUX SIGNAL PEAK PROCESSOR 4 R855 8.45K CR855 U844A LT1018 1 8 PART OF A3 MAIN BOARD BAR SCANNER / DRIVER AND DAC 3 Schematic Diagram <4> Component Locator Chart Assembly A3. 760A / 760D / 760N C165 C369 C458 C459 C461 C502 G3 D1 D2 D3 D4 G5 R157 R158 R168 R169 R170 C4 C4 D4 C4 C4 CR458 CR459 CR558 CR559 CR563 CR564 CR565 CR566 D2 D2 D2 D2 D3 D3 D3 D3 R174 R175 R176 R262 R263 A2 A2 A2 G3 G3 J273 J373 J413 J419 B2 B3 A4 H5 R264 R265 R358 R359 R362 G3 G3 E2 E2 D2 Q603 Q604 G5 G5 R363 R364 R366 R370 D3 C2 B2 C2 R371 B2 R373 R374 R375 R400 R458 A3 A3 A3 G5 D2 R602 R603 R604 R856 G5 G5 H5 H1 R460 R463 R466 R467 R469 D2 B3 C3 B3 C3 U158 U161A U161B U167 U172 E2 F3 F2 H3 H1 R470 R472 R474 R558 R560 C3 B3 A3 C2 D1 U179A U361 U368 U379A U462A A2 E2 C2 A3 C2 R562 R563 R564 C3 D3 D3 U462B U462C U462D U468 C2 C3 C3 C3 B1 E1 5 1 VAGC AUX_ENABLE 1 SUM_ENABLE 16 SUM(L+R) 15 2 AUX AGCV 10 DIFF_ENABLE 8 DIFF(R-L) +12V -12V ORTHOGONALITY CORRECTION J273 2 - 3 L+R -RIGHT 4 2 J273 1 3 E4 1 2 1 R371 10.0K 2 1 3 11 7 6 13 4 5 U462B MC34084 CR558 R458 10.0K 7 R460 10.0K 6 5 R364 10.0K A1 GAIN CONTROL LOGIC 7 5 3 -12V R174 10.00K -LEFT 3 14 AUX BAR SELECT CR559 6 +12V U179A MC34084 1 1 R558 10.0K R370 10.0K +12V R175 10.00K SELECT_BAR R856 1.00M R560 10.0K 1 - 2 -L R176 5.00K 3 9 C369 2.2UF 45 DEGREE MATRIX U172 DG201 U368 LF351 4 C458 4.7UF +12V -12V 4 2 AGC_CONT 5 1 3 E2 A1 CR459 U462A 1 MC34084 1 1 CR458 R359 2M -12V +5V +12V R362 10.0K R366 100K 2 1 7 3 6 5 4 -12V ORTHOGONALITY R467 10.0K J373 R463 20K J373 1 3 1 1 3 2 1 R472 10.0K 1 R470 10.0K 9 G1 G2A G2B Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 15 14 13 12 11 10 9 7 U161B 74LS08 4 6 5 1 AGCH 2 6 5 4 CR566 R563 10.0K U468 LF351 -12V 2 3 +12V MANUAL 15 14 9 10 R262 500 R363 10.0K C165 4.7UF CAL 11 8 R264 10.0K +12V -12V 7 6 13 4 5 R265 3.0K C459 4.7UF CR563 13 NOTE: R265 14 12 R375 5.00K U167 DG201 16 3 R263 5.62K 8 U462C MC34084 7 3 U379A MC34084 -12V R374 10.00K 2 6 4 5 U158 74LS138 A B C CR565 10 +12V 4 2 R562 10.0K R469 10.0K +12V R474 10.00K +5V 1 2 3 U161A 74LS08 R564 10.0K R466 10.0K 2 - 3 R-L U361 LM311 COMP AUTO CAL 1 1 - 2 -R R373 5.00K R358 10.0K 8 U462D MC34084 CR564 760A 3.0K 760D 1.91K 760N 1.91K C461 2.2UF B4 HAGC PHLED PEAKHOLD J413 CONNECTS TO J110 8 A2 FRONT PANEL BOARD J413 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 MANUAL C3 A3 2 D5 +12V EXPAND_SCALE 5 3 +5V +5V R158 10.0K +5V R157 10.0K +5V R170 10.0K +5V R169 10.0K TRACE ROTATION R168 10.0K +12V CAL AUTO SUM_ENABLE DIFF_ENABLE AUX_ENABLE R602 100 +12V Q603 R400 20K +5V TRACE ROT LA7 LA6 LA5 LA4 -12V C502 .1UF R604 180 J419 1 2 Q604 R603 100 J419 CONNECTS TO P320 ON CRT H1 7 F4 LA[4..7] LA[4..7] -12V 3 PART OF A3 MAIN BOARD 760A/760D/760N STEREO AUDIO MONITOR MATRIX AND AGC CONTROL LOGIC 4 Schematic Diagram <5> Component Locator Chart Assembly A1. 760A / 760D / 760N C510 C570 C573 C574 C575 E3 C4 B5 B4 A4 Q769 Q776 G5 G3 R682 R683 C1 A2 A4 A1 B1 A1 B2 G2 G4 G4 G4 G2 R684 R685 R686 R687 R688 B2 C1 C1 B1 C1 G2 G4 H4 G4 C578 C581 C584 C586 C587 Q795 Q861 Q864 Q865 Q883 R798 R858 R861 R863 Q884 Q885 Q886 G1 G2 G1 C1 D3 D3 D1 C3 R471 R473 R565 R566 R568 B1 B2 B4 B4 C4 D2 D2 D3 G5 H4 G5 G5 G5 G4 D4 C588 C616 C618 C695 C712 R693 R694 R720 R759 R760 R864 R865 R866 R867 R868 D4 B4 G3 F4 B1 R576 R577 R580 R582 R583 A4 A4 A1 A1 A1 G5 H2 D4 D4 D4 E4 E4 F3 F3 G1 C768 C772 C776 C778 C785 R761 R767 R769 R770 R771 R875 R876 R877 R878 R881 E4 E4 F5 E2 F2 F1 R593 R594 R600 R601 R606 C1 D1 H4 H2 C3 G5 G5 D4 G5 G3 H1 G1 G1 D1 E2 E2 C870 C872 C876 C891 C895 C897 R772 R773 R774 R775 R776 R882 R887 R888 R889 R895 R896 D3 G3 G3 H3 G3 R607 R608 R609 R610 R613 C2 D2 C3 D3 D3 A5 G3 G3 F3 F3 C4 C1 F3 F3 CR616 CR780 CR790 CR791 CR876 R777 R778 R779 R780 R781 TP672 TP688 TP866 TP885 E3 H4 H1 F2 D3 G2 G4 G5 R676 R677 R678 C4 A5 C4 G2 G2 D1 D1 G2 U894B Q620 Q695 Q761 Q766 R787 R788 R789 R790 R794 E4 F4 F3 F3 E1 E3 D2 C4 B4 B5 C4 U873A U873B U880A U880B U894A L513 R615 R672 R673 R674 R675 A2 H2 G2 G2 G2 C1 C3 D3 C4 B4 B1 J409 J862 J886 R782 R783 R784 R785 R786 U590 U612A U612B U670 U680A U680B R797 G2 $ ! % ! # ! )# ! ! $ $ $# ! % $ ! ##! #!#! ! % $ ! ! % $ ! ! $ % ! $ %!# ! % ! ! % ! %!# % ! "# ! #!# %!# # % ! ! ! $ # ! % ! ! ! ! % % $ ! !& # ! $ % ! LOW PASS FILTER ! % #"# ## $ ! VERTICAL OUTPUT AMPLIFIER ! ! ! VERTICAL GAIN CONTROL GRATICULE ILLUMINATION ! % ! % ! ! $ ! ! ! % ! $ $ $ ! !#$#" $ ! % $ ! $ ! ! % ! LOW PASS FILTER % % ! $ ! % ! % ! # $ $ ! ! ! ! ! % ! % $ ! ! #!# !(# # % % ! ! $ ! ! !( !(# % ! ! ! % ! % $ "# ! ! % % #"# ! ! ! $ $ ! ! HORIZONTAL OUTPUT AMPLIFIER ! ## $ % ! ##! #!#! ! ! ! ! $ % ! $# ! Z–AXIS DIMMING HORIZONTAL GAIN CONTROL $ % # !#$ ! ! ! ! $ ! ! #"#' # ! $ ! % % % $ % ! #"#$'"#"! % ! ! ! ! % 760A/760D/760N STEREO AUDIO MONITOR % !#! AGC AND CRT DEFLECTION AMPS A1 Power Supply Board Static Sensitive Devices See Maintenance Section A1 Board and Diagram <6> Component Locator Comp No C1 C2 C3 C4 C5 Diag No 7 7 7 7 7 Diag Loc C4 D3 D3 D3 D4 Bd Loc A4 D1 A2 A2 B3 Comp No Diag No C27 C28 C29 C30 C31 7 7 6 6 6 Diag Loc B1 B1 F2 F2 F3 Bd Loc E3 E3 F1 F2 F3 C6 C7 C8 C9 C10 7 7 7 7 7 C4 F3 D3 E2 C5 B4 B1 B2 B2 B4 C32 C33 C34 C35 C36 6 6 7 6 6 F2 G2 D1 F3 G2 F3 F4 F4 G3 G3 C11 C12 C13 C14 C15 7 7 7 7 7 E2 D2 D2 D2 F2 B1 C4 C4 C4 C4 C37 C38 C39 C40 C41 6 6 6 6 6 G3 G2 E4 F4 E4 G4 G4 G4 H4 I4 C16 C17 C18 C19 C20 7 7 7 7 7 C2 F2 F3 C1 C2 C3 D4 E1 D4 D4 C42 C43 C44 C45 C46 6 6 6 6 6 D3 C4 D2 D4 C5 I1 J4 I3 I4 I4 C21 C22 C23 C24 C25 7 7 7 7 7 C1 B2 B2 D1 A3 D4 E2 E3 E4 E2 C47 C48 C49 C50 C51 6 6 6 6 6 A3 C4 D3 C3 C4 J3 J4 J2 J2 K2 Comp No Diag No Diag Loc Bd Loc C52 C53 C54 C55 C56 6 6 6 6 6 C4 E3 C2 E3 B2 J2 I2 M2 H3 M3 C57 C58 C59 C60 C61 6 6 6 6 6 B2 B3 B4 B5 D4 N5 J2 J3 J4 I4 Comp No Diag No CR11 6 Diag Loc F2 Bd Loc Comp No Diag No F1 FIL1 FIL2 6 7 7 Diag Loc Bd Loc G2 CR12 CR13 CR14 CR15 CR16 6 6 6 6 6 F2 F3 E2 E4 D5 G1 G2 G3 G5 I4 CR17 CR18 CR19 CR20 CR21 6 6 6 6 6 E2 D2 B3 E3 B2 I2 I2 K3 I3 L4 CR22 CR23 CR24 CR25 CR26 6 6 6 6 6 B2 B2 B2 B3 F4 L4 L4 L4 J2 G4 C62 C63 C65 C66 CR1 6 6 7 7 7 E1 E1 B2 A2 E2 H1 G1 E4 E2 B1 CR2 CR3 CR4 CR5 CR6 7 7 7 7 7 D4 E2 C2 D2 E2 B3 B1 B2 C3 C3 CR27 CR29 CR30 CR31 6 6 7 7 D3 E4 A2 A2 J1 H5 E2 E2 CR7 CR8 CR9 CR10 7 7 7 6 C2 C2 C1 F1 D4 D4 E4 G2 DS1 DS2 DS3 DS4 7 7 7 6 E2 E2 E3 D2 B2 B2 B1 L2 J1 J2 J3 J4 J5 7 6 7 6 6 B2 C3 C3 F3 H5 F2 H3 H1 M4 C1 C1 B1 B5 D1 F5 F1 J6 J10 J11 6 6 7 A2 A2 F4 M3 N1 A2 L1 L2 L3 L4 6 6 6 6 F3 F2 F2 C2 F2 G1 G2 N1 Q1 Q2 Q3 Q4 Q5 7 7 7 7 7 E5 E5 D4 D4 C4 B3 A3 B4 B4 B4 Q6 Q7 Q8 7 6 6 B2 D5 E4 E1 I4 I4 Comp No Diag No Diag Loc Bd Loc Q9 Q10 Q11 6 7 6 D3 A2 G3 J1 E2 G3 R1 R2 R3 R4 R5 7 7 7 7 7 E3 E4 E4 E4 E5 A1 A2 A2 A3 A3 R7 R8 R11 R12 R13 7 7 7 7 6 B4 B4 F4 D3 F3 A4 A4 A2 C1 H4 R14 R20 R21 R22 R23 6 7 7 7 7 F3 C4 C5 D5 B4 H4 A4 A4 A4 A4 R24 R25 R26 R27 R28 7 7 7 7 7 D5 B4 E5 E5 E5 A4 A4 A3 A4 A4 R29 7 D2 B1 Comp No Diag No R30 R31 R32 R33 7 7 7 7 Diag Loc D2 D4 E5 C4 Bd Loc A2 B3 B3 B4 R34 R35 R36 R37 R38 7 7 7 7 7 C4 D4 D4 C5 E2 B4 B3 B3 B4 B1 R39 R40 R41 R42 R43 7 7 7 7 7 E2 D2 D4 E3 E2 B1 B2 B3 C1 B3 R44 R45 R46 R47 R48 7 7 7 7 7 D2 F2 E3 D2 C2 B3 C4 C1 C3 C4 R49 R50 R51 R52 R53 7 7 7 7 7 F2 F2 F3 F2 F2 C4 E1 E1 E1 E1 760A / 760D / 760N Comp No Diag No Diag Loc Bd Loc R54 R55 R56 R57 R58 7 7 7 7 7 F2 D2 F3 B2 D2 E1 D4 E1 E1 E4 R59 R60 R61 R62 R63 7 7 7 6 7 B1 C1 D1 D4 A2 E2 E3 E4 I4 E2 R64 R65 R66 R67 R68 7 7 7 6 6 C2 B1 B1 F2 F4 E2 E3 E3 F4 G5 R69 R70 R71 R72 R73 6 6 6 6 6 G4 G4 F4 D5 E5 G5 G4 H4 H4 H4 R74 R75 R76 R77 R78 6 6 6 6 6 C4 B5 C5 D4 B4 J5 J4 I4 I4 J4 Comp No Diag No Diag Loc Bd Loc R79 R80 R81 R82 R83 6 6 6 6 6 B3 C4 D3 C3 C5 J2 J4 J1 J2 J2 R84 6 B5 J2 R85 R86 R87 R88 R89 6 6 6 6 6 G4 D3 D3 B4 B2 G5 J1 K2 J2 M4 R90 R91 R92 R93 R94 6 6 6 6 6 E3 D2 D2 D2 D2 I3 K1 K1 L2 L2 R95 R96 R97 R98 R99 6 6 6 6 6 B4 A4 A3 F4 G4 J3 K3 J3 G5 H5 R101 R102 6 6 C3 C2 K2 M1 Comp No Diag No Diag Loc Bd Loc R103 7 A2 E2 RV1 6 D2 I3 T1 T2 T3 7 6 6 B2 E4 E2 C4 H5 G3 TP1 TP2 6 6 F5 E5 F4 K4 U1 U2 U3A U3B U4A U4B U5 7 7 6 6 6 6 6 D1 B1 C4 B3 D4 C4 C3 C1 F4 J3 J3 I5 I5 J2 VR1 VR2 VR3 VR4 6 7 6 6 F4 A2 F3 F4 H4 E2 H4 H4 W1 W2 W3 W4 6 6 6 6 G3 G3 G2 G2 E4 E4 E4 E5 J5 1 1 2 CAUTION: 2 3 ALL CIRCUITRY TO THE LEFT OF THE ISOLATION BOUNDARY IS AT POWER LINE POTENTIAL AND REQUIRES AN ISOLATION TRANSFORMER TO SERVICE. 3 4 ISOLATION BOUNDARY 4 5 5 6 6 7 7 8 8 9 LINE RECTIFIER AND FILTER C62 9 10 CR10 NOT INSTALLED 10 11 11 C63 OUTPUT FILTERS MOUNTING L4 1MH C56 .022UF CLAMP R102 8 L3 4.7UH CR11 +15V J6 R89 5 F1 2A 90-250V CR23 C44 .47UF C54 330UF CR22 J10 REAR PANEL R91 100K C57 .068UF RV1 C30 560UF 10 W4 0 OHM C36 560UF +15A 9 CR18 R93 150K R92 100K 1 T3 2 8 L2 4.7UH C29 560UF CR12 C38 560UF -15V R94 150K 14 W3 0 OHM -15A CR24 CR21 DS4 13 CR14 R67 10.0 +40V CR17 +5VC C47 .47UF R97 2.00K 6 6 7 1 U3B LM393 2 R79 49.9K 3 4 C58 200PF REF VFB VCC ISEN OUT RT/CT GND CR13 +5V C35 560UF +5VC COMP 11 L1 4.7UH 7 U5 UC3842 CR25 5 8 C50 .47UF 7 6 5 SNUBBER H R81 178 NOT INSTALLED C53 100PF CROWBAR Q9 +5V R82 4.99K R90 2.4K C51 .01UF ISOLATION BOUNDARY CR20 6 NC 7 +5VC 9 10 R86 0.51 A B Q C L Q 5 NC 7 7 FOCUS 1 C43 .47UF 12 NC FEEDBACK TRANSFORMER DRIVER NC 3 C60 .1UF R80 2.00K +5VC C48 200PF 14 U4A 74LS221 CX VCC GND 15 1 1 U3A LM393 +5VC 4 2 16 Q A B C L Q C45 .47UF C61 470PF CR29 2 T2 4 R77 100 13 4 -15V 3 CR26 R68 178 CR15 C39 .1UF 8 RX VR4 10V 4 5 +5VC 5 6 1 6 7 A3 MAIN BOARD 7 8 8 9 10 10 +5V C40 4700PF R71 221K R69 10.00K +5V R85 100K FRONT PANEL R99 100K +5V ADJUST VR1 431C POWER R70 10.00K R62 100 (OPEN = ON) Q8 NC R72 10.0 +5VC R76 3.74K PEAK DETECTOR S1 Q7 C46 .01UF J2 1 2 R73 10.0 CR16 LINE SIDE COMMON TP2 SECONDARY GROUND (CHASSIS GROUND) TP1 PART OF A1 POWER SUPPLY 760A/760D/760N STEREO AUDIO MONITOR J4 CONNECTS TO J153 3 +5VC R83 10.00K +5VC 1 3 4 9 +40V +5VC 2 3 ZAXIS +100V R98 10.00K C41 .47UF R74 4.99K 8 ERROR AMPLIFIER 1 2 +15V GDS +5VC +5VC R84 18.7K D5 J4-1 +40V RX 1 1 2 R75 4.99K Q11 7 Q9 +5VC R78 3.74K R14 10.0 R13 100 CX C52 .01UF R95 4.53K J4 A4 +5V R88 2.00K C59 .1UF NC +5V VR3 5.1V A4 R101 49.9 U4B 74LS221 +5D C55 SWITCHER MOSFET CR27 W1 0 OHM C37 560UF C31 560UF R87 22.1 R96 49.9K W2 0 OHM +40VA PULSE WIDTH MODULATOR CR19 12 C42 560UF C49 .1UF OUTPUT UV SHUTDOWN 5 C33 10UF C32 560UF LOW VOLTS POWER SUPPLY 6 1 2 Assembly A1. Partial Assembly A1 also shown on Schematic 6. Comp No A10 CRT Socket Board (Front of Board) A10 CRT Socket Board (Back of Board) 760A / 760D / 760N Diag Loc Bd Loc Comp No Diag Loc Bd Loc C1 C2 C3 C4 C5 C4 D3 D3 D3 D4 A4 D1 A2 A2 B3 CR31 A2 E2 DS1 DS2 DS3 E2 E2 E3 B2 B2 B2 C6 C7 C8 C9 C10 C4 F3 D3 E2 C5 B4 B1 B2 B2 B4 FIL1 FIL2 C3 C3 C1 C1 J1 J3 J11 F3 F2 F4 B1 D1 A2 C11 C12 C13 C14 C15 E2 D2 D2 D2 F2 B1 C4 C4 C4 C4 C16 C17 C18 C19 C20 C2 F2 F3 C1 C2 C3 D4 E1 D4 D4 Q1 Q2 Q3 Q4 Q5 Q6 Q10 E5 E5 D4 D4 C4 B2 A2 B3 A3 B4 B4 B4 E1 E2 C21 C22 C23 C24 C25 C1 B2 B2 D1 A3 D4 E2 E3 E4 E2 R1 R2 R3 R4 R5 E3 E4 E4 E4 E5 A1 A2 A2 A3 A3 C27 C28 C34 C65 C66 B1 B1 D1 B2 A2 E3 E3 F4 F4 E2 R7 R8 R11 R12 R20 B4 B4 F4 D3 C4 A4 A4 A2 C1 A4 CR1 CR2 CR3 CR4 CR5 E2 D4 E2 C2 D2 B1 B3 B1 B2 C3 R21 R22 R23 R24 R25 C5 D5 B4 D5 B4 A4 A4 A4 A4 A4 CR6 CR7 CR8 CR9 CR30 E2 C2 C2 C1 A2 C3 D4 D4 E4 E2 R26 R27 R28 R29 R30 E5 E5 E5 D2 D2 A3 A4 A4 B1 A2 R31 R32 D4 E5 B3 B3 Comp No Diag Loc Bd Loc R33 R34 R35 C4 C4 D4 B4 B4 B3 R36 R37 R38 R39 R40 D4 C5 E2 E2 D2 B3 B4 B1 B1 B2 R41 R42 R43 R44 R45 D4 E3 E2 D2 F2 B3 C1 B3 B3 C4 R46 R47 R48 R49 R50 E3 D2 C2 F2 F2 C1 C3 C4 C4 E1 R51 R52 R53 R54 R55 F3 F2 F2 F2 D2 E1 E1 E1 E1 D4 R56 R57 R58 R59 R60 F3 B2 D2 B1 C1 E1 E1 E4 E2 E3 R61 R63 R64 R65 R66 R103 D1 A2 C2 B1 B1 A2 E4 E2 E2 E3 E3 E2 T1 B2 C4 U1 U2 D1 B1 C1 F4 VR2 A2 E2 R61 22.1 HV OSC & ERROR AMP C28 0.1UF +100V C19 10UF R66 499K U2 741 +15A CR31 5.5KV P-P R59 5.000K 2 P320 1 2 IN +11KV 3 OUT C21 .015UF R60 6.04K 2 CR30 C22 0.47 UF C20 .015UF R64 100K T1 +100V GRID DRIVE CR7 C66 10UF 5 CR5 R58 100K 8 CRT BIAS C16 10UF 13 GEOMETRY C12 .015UF R48 3.01K C14 .015UF 3 H Q6 R57 22.1 6 C11 .001UF R44 470 9 2 CR1 CR4 FIL1 VR5 R30 10K VR6 R39 470 R29 47 C4 .01UF C3 .01UF DS1 DS3 FIL2 WIRE COLOR CODES 3 R56 10.0 R51 4.99K R42 150K 1 2 R54 4.99K 5 ASTIG 4 FOCUS J3 R53 10.0 4 1 2 3 4 WHT/BLK/RED (g3) WHT/BLUE WHT/GRN (g2) 12 WHT/GRAY (g1) C18 .1UF 1st ANODE 3 J1 1 R12 470 -2530V NC 2 NC 3 4 5 C2 .001UF (g4) DS2 +40VA C8 .01UF 10 C17 .1UF -15A 1 C25 0.1UF ASTIG CR3 (y2) 7 (y1) 9 R52 10.0 R49 20K R38 22M R47 100K R40 10K (x1) 13 +100V R55 22.1K 7 (x2) 11 C15 .1UF -15A C13 .015UF CR8 VR2 5.1V C9 .01UF R43 470 CR6 4 C23 .01UF R50 10.0 R45 100K +40VA Q10 (g5) 6 CR9 3 C65 0.47 UF CRT 1 R63 2.00K R103 499K 4 TRACE ROTATION (g7) POST H5 G +5V 4 P320 IS PART OF CRT V1 U1 7 6 C34 10UF R65 100K C27 0.1UF +15A C24 10UF 6 R46 10.0 7 1 BRN/RED (k) 2 2 CATHODE 3 4 5 6 7 WHT/RED 14 (f) 1 (f) WHT/BRN WHT/BLK BRN C7 330PF SKT1 R1 1.5M 1W +100V CR2 R35 475 C6 2200PF NOT INSTALLED H3 6 J11 CENTER FOCUS (g3) 1 2 3 (k) 4 (g1) 5 (f) 6 (f) 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7 C1 .1UF +100V R8 100 R7 100K R4 1.5M 1W +5D C10 .47UF H4 BRN BLUE H1 5 5 VERTICAL DEFLECTION R37 22.1 V1 TUBE SOCKET VISUAL AID +5D R28 37.4K R5 1.5M 1W Q2 BOARD CAP R21 -15A GREEN RED FOCUS AMPLIFIER Q5 R33 13.0K 1 2 3 4 5 6 7 R3 1.5M 1W Q4 ZAXIS HORIZONTAL DEFLECTION R41 178 R34 2.00K R20 3.74K J3 A10 CRT SOCKET BOARD R31 100K R23 J4-1 R25 100 C5 .1UF J1 1 1 1 1 1 1 2 3 4 5 6 7 8 9 0 1 2 3 4 1 2 3 4 Q3 +15A H3 6 R36 2.00K R11 2.5M R2 2.2M 1/2W +100V Z AXIS AMPLIFIER J2 (g5) 1 (g4) 2 3 (g2) 4 Q1 R22 26.1K R27 13.0K H3 6 FOCUS R24 100 R32 499K (k) Cathode (f) Filament (f) Filament -15A NOT INSTALLED R26 499K ASTIG (g4) (g3) FOCUS (g1) GRID 3 4 5 6 GEOM (g5) 7 2 VERT PLATE (y2) 1 14 (x1) HORIZ PLATE 9 13 12 (g2) 1st ANODE VERT PLATE (y1) 11 HORIZ PLATE (x2) PART OF A1 POWER SUPPLY 760A/760D/760N STEREO AUDIO MONITOR HIGH VOLTS POWER SUPPLY 7 Static Sensitive Devices See Maintenance Section A2 Front Panel Board Schematic Diagram <8> Component Locator Chart Assembly A2. 760A / 760D / 760N C355 C3 DS115 DS215 DS315 DS412 DS416 DS418 DS432 DS434 D1 D3 D4 G3 G4 G4 G2 F2 R437 R438 R439 R451 G1 F1 G2 G1 S516 S525 S534 S544A S544B F4 G3 G2 G1 G1 J110 J135 H3 A3 U320 U332 U347 C1 C3 C4 R423 R424 R425 G4 G4 G3 % " # # ! "! "! " ! ! " $ # ! # # " ! ! # # " " " " " " " " " " " " " " " " " " " " " # ! # "$ "$ # ! 760A/760D/760N STEREO AUDIO MONITOR FRONT PANEL Replaceable Mechanical Parts Section 10 Replaceable Mechanical Parts This section contains a list of the replaceable mechanical components for the 760A, 760D, and 760N. Use this list to identify and order replacement parts. Parts Ordering Information Replacement parts are available through your local Tektronix field office or representative. Changes to Tektronix products are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest improvements. Therefore, when ordering parts, it is important to include the following information in your order: H Part number H Instrument type or model number H Instrument serial number H Instrument modification number, if applicable If you order a part that has been replaced with a different or improved part, your local Tektronix field office or representative will contact you concerning any change in part number. Change information, if any, is located at the rear of this manual. Using the Replaceable Mechanical Parts List The tabular information in the Replaceable Mechanical Parts List is arranged for quick retrieval. Understanding the structure and features of the list will help you find all of the information you need for ordering replacement parts. The following table describes the content of each column in the parts list. 760A / 760D / 760N 10–1 Replaceable Mechanical Parts Parts List Column Descriptions Column Column Name Description 1 Figure & index number Items in this section are referenced by figure and index numbers to the exploded view illustrations that follow. 2 Tektronix part number Use this part number when ordering replacement parts from Tektronix. 3 and 4 Serial number Column three indicates the serial number at which the part was first effective. Column four indicates the serial number at which the part was discontinued. No entry indicates the part is good for all serial numbers. 5 Qty This indicates the quantity of parts used. 6 Name & description An item name is separated from the description by a colon (:). Because of space limitations, an item name may sometimes appear as incomplete. Use the U.S. Federal Catalog handbook H6-1 for further item name identification. 7 Mfr. code This indicates the code of the actual manufacturer of the part. 8 Mfr. part number This indicates the actual manufacturer’s or vendor’s part number. Abbreviations Abbreviations conform to American National Standard ANSI Y1.1–1972. Chassis Parts Chassis-mounted parts and cable assemblies are located at the end of the Replaceable Electrical Parts List. Mfr. Code to Manufacturer Cross Index 10–2 The table titled Manufacturers Cross Index shows codes, names, and addresses of manufacturers or vendors of components listed in the parts list. 760A / 760D / 760N Replaceable Mechanical Parts Manufacturers Cross Index Mfr. Code Manufacturer Address City, State, Zip Code S3109 FELLER U.S. CORPORATION 72 Veronica Ave Unit 4 Summerset NJ 08873 TK0435 LEWIS SCREW CO 4300 S RACINE AVE CHICAGO IL 60609–3320 0JR05 TRIQUEST CORP 3000 LEWIS AND CLARK HWY VANCOUVER WA 98661–2999 0KB01 STAUFFER SUPPLY 810 SE SHERMAN PORTLAND OR 97214 07416 NELSON NAME PLATE CO 3191 CASITAS LOS ANGELES CA 90039–2410 2K262 BOYD CORP 6136 NE 87th AVE PO BOX 20038 PORTLAND OR 97220 22670 G M NAMEPLATE INC 2040 15TH AVE WEST SEATTLE WA 98119–2728 3L462 QUALITY PLASTICS DIV. OF MOLL PLASTICRAFTERS L.P. 2101 CRESTVIEW DRIVE NEWBERG, OR 97132–9518 34785 DEK INC 3480 SWENSON AVE ST CHARLES IL 60174–3450 50434 HEWLETT–PACKARD CO OPTOELECTRONICS DIV 370 W TRIMBLE RD SAN JOSE CA 95131–1008 73743 FISCHER SPECIAL MFG CO 111 INDUSTRIAL RD COLD SPRING KY 41076–9749 80009 TEKTRONIX INC 14150 SW KARL BRAUN DR PO BOX 500 BEAVERTON OR 97077–0001 80126 PACIFIC ELECTRICORD CO 747 W REDONDO BEACH PO BOX 10 GARDENA CA 90247–4203 85471 BOYD CORP 13885 RAMOMA AVE CHINO CA 91710 93907 TEXTRON INC CAMCAR DIV 600 18TH AVE ROCKFORD IL 61108–5181 760A / 760D / 760N 10–3 Replaceable Mechanical Parts Replaceable mechanical parts list Fig. & Index Number Tektronix Part Number 1–1 426–2174–02 1 –2 211–0690–02 –3 Mfr. Code Mfr. Part Number FRAME,CRT:BEZEL *MOUNTING PARTS* 80009 426217402 2 SCREW,MACHINE:6–32 X 0.875,PNH,SST *END MOUNTING PARTS* 93907 B20–70430 361–1515–00 1 SPACER,RING:4.9 X3.35,POLYCARBONATE 3L462 361–1515–00 –4 333–3320–01 1 PANEL,FRONT:760 80009 333332001 –5 378–0258–00 1 FLTR,CONTRASTIN:GRAY,POLYCARBONATE 80009 378025800 –6 331–0495–00 1 SCALE,CRT:SOUND STAGE GRATICULE,760 0JR05 331–0495–00 –7 331–0245–01 1 MASK,CRT SCALE:760 2K262 ORDER BY DESC –8 333–3986–00 1 80009 333398600 333–3787–00 1 22670 333–3788–00 333–3788–00 1 PANEL,FRONT:760A (760A ONLY) PANEL,FRONT:760D (760D ONLY) PANEL,FRONT:760N (760N ONLY) *MOUNTING PARTS* 22670 333–3788–00 –9 211–0721–00 2 SCREW,MACH:6–32 X 0.375,PNH,STL,CDPL,T–15 TORX DR *END MOUNTING PARTS* 0KB01 ORDER BY DESC –10 ––––––––––– 1 CIRCUIT BD ASSY:FRONT PANEL (SEE A2 REPL) *MOUNTING PARTS* –11 211–0721–00 4 SCREW,MACH:6–32 X 0.375,PNH,STL,CDPL,T–15 TORX DR *END MOUNTING PARTS* 0KB01 ORDER BY DESC 426–2101–04 1 FRAME SECT,CAB:FRONT *MOUNTING PARTS* 3L462 ORDER BY DESC –13 211–0721–00 3 SCREW,MACH:6–32 X 0.375,PNH,STL,CDPL,T–15 TORX DR *END MOUNTING PARTS* 0KB01 ORDER BY DESC –14 ––––––––––– 1 SWITCH,PUSH:0.4A,125VAC,W/SOLDER LUG,BUTTONW/ YELLOW INDICATOR (SEE S1 REPL) *MOUNTING PARTS* –15 210–0405–00 2 NUT,PLAIN,HEX:2–56 X 0.188,BRS CD PL 73743 12157–50 –16 211–0100–00 2 SCREW,MACHINE:2–56 X 0.750,PNH,STL *END MOUNTING PARTS* TK0435 ORDER BY DESC –17 ––––––––––– 1 CIRCUIT BD ASSY:MAIN (SEE A3 REPL) *MOUNTING PARTS* –18 211–0721–00 8 SCREW,MACH:6–32 X 0.375,PNH,STL,CDPL,T–15 TORX DR *END MOUNTING PARTS* 0KB01 ORDER BY DESC –19 337–3321–00 1 SHIELD,ELEC:CKT BD 1730 85471 337–3321–00 –20 ––––––––––– 1 CIRCUIT BD ASSY:POWER SUPPLY (SEE A1 REPL) –21 211–0721–00 B050000 7 SCREW,MACH:6–32 X 0.375,PNH,STL,CDPL,T–15 TORX DR (760A ONLY) 0KB01 ORDER BY DESC 211–0721–00 B052743 6 SCREW,MACH:6–32 X 0.375,PNH,STL,CDPL,T–15 TORX DR (760A ONLY) 0KB01 ORDER BY DESC 211–0721–00 B030000 7 SCREW,MACH:6–32 X 0.375,PNH,STL,CDPL,T–15 TORX DR (760D ONLY) 0KB01 ORDER BY DESC 211–0721–00 B030175 6 SCREW,MACH:6–32 X 0.375,PNH,STL,CDPL,T–15 TORX DR (760D ONLY) 0KB01 ORDER BY DESC 10–4 Serial No. Effective Serial No. Discont’d B052742 B030174 Qt y Name & Description 760A / 760D / 760N Replaceable Mechanical Parts Replaceable mechanical parts list (Cont.) Fig. & Index Number Tektronix Part Number Serial No. Effective Serial No. Discont’d Qt y Mfr. Code 211–0721–00 B030000 B030208 7 Mfr. Part Number SCREW,MACH:6–32 X 0.375,PNH,STL,CDPL,T–15 TORX DR (760N ONLY) 0KB01 ORDER BY DESC 211–0721–00 B030209 6 SCREW,MACH:6–32 X 0.375,PNH,STL,CDPL,T–15 TORX DR (760N ONLY) 0KB01 ORDER BY DESC TK0435 ORDER BY DESC Name & Description –22 211–0014–00 2 SCREW,MACHINE:4–40 X 0.5,PNH,STL –23 337–3796–01 1 SHIELD,ELEC:0.032 BRASS,C26000,0.5 HARD 80009 337379601 –24 131–3573–00 1 CONN,PLUG,ELEC:MALE,W/LOCKING ADAPTER 80126 B–0779 –25 337–3257–00 2 SHIELD,CKT BD:LV PWR SUPPLY 2K262 ORDER BY DESC –26 337–3931–00 1 SHIELD,ELEC:ALUMINUM 80009 337393100 –27 333–3321–03 1 PANEL,REAR: *MOUNTING PARTS* 5Y400 ORDER BY DESC –28 211–0721–00 3 SCREW,MACH:6–32 X 0.375,PNH,STL,CDPL,T–15 TORX DR *END MOUNTING PARTS* 0KB01 ORDER BY DESC –29 211–0720–01 2 SCREW,MACH:6–32 X 0.50,PNH,STL,TORX T–15WITH SLOT 0KB01 211–0720–01 –30 348–1464–00 1 MANCHET:CRT,END RUBBER MANCHET,31.5MM THK X 63MM OD,50.5 ID 80009 348–1464–00 –31 407–4395–00 1 BRACKET,CRT:BACK,0.062,AL 80009 407439500 –32 210–0457–00 2 NUT,PL,ASSEM WA:6–32 X 0.312,STL CD PL TK0435 ORDER BY DESC *MOUNTING PARTS* *END MOUNTING PARTS* –33 ––––––––––– 1 CIRCUIT BD ASSY:CRT SOCKET BD (SEE A10 760A REPL) –34 343–0916–00 B050000 B052742 1 CLAMP,LOOP:0.5 ID,NYLON (760A ONLY) 34785 029–500 343–0916–00 B050000 B030174 1 CLAMP,LOOP:0.5 ID,NYLON (760D ONLY) 34785 029–500 343–0916–00 B050000 B030208 1 CLAMP,LOOP:0.5 ID,NYLON (760N ONLY) 34785 029–500 –35 252–0571–00 1 NEOPRENE EXTR:CHAN,0.234 X 0.156 85471 ORDER BY DESC –36 386–4443–00 1 SUPPORT,SHIELD:CRT,FRONT,PLASTIC 80009 386444300 –37 346–0133–00 1 STRAP,TIEDOWN,E:14.0 X 0.091,NYLON 59730 –38 337–4064–00 1 SHIELD,ELEC:MU–METAL CRT SHIELD –39 334–1379–00 1 MARKER,IDENT:MKD HI VACUUM –40 ––––––––––– 1 ELECTRON TUBE:CRT,FINISHED (SEE V1 REPL) –41 426–2103–07 1 –42 331–0496–00 070–5992–05 150–1181–00 –43 –44 TY234M EURO DIR 337–4064–00 07416 ORDER BY DESC FRAME,CHASSIS:ALUMINUM 80009 426210307 1 1 3 SCALE,CRT:X–Y GRATICULE,760 MANUAL,TECH:INST,760A,760D,760N DIODE,OPTO:LED;RED,626NM,101 ELEMENTLINEAR ARRAY,0.100” SIP,COM–CATH 0JR05 80009 50434 331–0496–00 070599203 QDSP–8838 161–0216–00 1 CABLE ASSY,PWR,:3,18 AWG,2.5M L,BLACK 80126 C7120–25M–BL 161–0215–00 1 CABLE ASSY,PWR:3,0.75MU,2.5MM L,GREY (EUROPEAN OPTION A1 ONLY) 80126 0–5335–008–GY 760A / 760D / 760N 10–5 Replaceable Mechanical Parts Replaceable mechanical parts list (Cont.) Fig. & Index Number Tektronix Part Number –45 161–0066–10 1 –46 161–0066–11 1 ––––––––––– ––––––––––– ––––––––––– ––––––––––– ––––––––––– 1 1 1 1 1 –47 –48 –49 10–6 Serial No. Effective Serial No. Discont’d Qt y Mfr. Code Mfr. Part Number CA ASSY,PWR:3,0.1MM SQ,250V/10A,2.5 METER,STR, IEC320,RCPT X 13A,FUSED UK PLUG(13A FUSE),UNITED KINGDOM,SAFTEY CONTROLLED (UNITED KINGDOM OPTION A2 ONLY) S3109 BS/13–H05VVF3G0 CA ASSY,PWR:3,1.0MM SQ,250V/10A,2.5 METER,STR, IEC320,RCPT,AUSTRALIA,SAFTEY CONTROLLED (AUSTRALIAN OPTION A3 ONLY) PLAIN CASE:1700F00 PTD CASE ASSY:1700F02 RACK ADAPTER,SIDE–BY–SIDE:1700F05 FILLER PANEL:1700F06 DRAWER,UTILITY:1700F07 S3109 198–000 Name & Description 129–1308–00 B052743 1 SPACER,POST:6–32 X 0.75,HEX,STL,CAD PL (760A ONLY) 55566 4538–632–S–3 129–1308–00 B030175 1 SPACER,POST:6–32 X 0.75,HEX,STL,CAD PL (760D ONLY) 55566 4538–632–S–3 129–1308–00 B030209 1 SPACER,POST:6–32 X 0.75,HEX,STL,CAD PL (760N ONLY) 55566 4538–632–S–3 343–0013–00 B052743 1 CLAMP,LOOP:0.375 ID,PLASTIC (760A ONLY) 06915 E6 CLEAR ROUND CABLE CLAMP 343–0013–00 B030175 1 CLAMP,LOOP:0.375 ID,PLASTIC (760D ONLY) 06915 E6 CLEAR ROUND CABLE CLAMP 343–0013–00 B030209 1 CLAMP,LOOP:0.375 ID,PLASTIC (760N ONLY) 06915 E6 CLEAR ROUND CABLE CLAMP 211–0720–01 B052743 1 SCREW,MACH:6–32 X 0.50,PNH,STL,TORX T–15WITH SLOT (760A ONLY) 0KB01 211–0720–01 211–0720–01 B030175 1 SCREW,MACH:6–32 X 0.50,PNH,STL,TORX T–15WITH SLOT (760D ONLY) 0KB01 211–0720–01 211–0720–01 B030209 1 SCREW,MACH:6–32 X 0.50,PNH,STL,TORX T–15WITH SLOT (760N ONLY) 0KB01 211–0720–01 760A / 760D / 760N FIG. 1 EXPLODED VIEW A10 A1 A3 A2 760A/760D/760N
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