Ohaus Defender 5000 with T51 Indicator service Manual

Ohaus Defender 5000 with T51 Indicator service Manual
Ohaus Defender 5000 with T51 Indicator service Manual
SERVICE MANUAL
5000 Series
T51 Indicators
T51P
T51XW
Ohaus Corporation 19A Chapin Road, P.O. Box 2033, Pine Brook, NJ 07058-2033 (973) 377-9000
TABLE OF CONTENTS
CHAPTER 1 GETTING STARTED
Page No.
1.1
1.2
1.3
Introduction ................................................................................................................1-1
Service Facilities........................................................................................................1-1
Tools and Test Equipment Required .........................................................................1-2
1.3.1 Special Tools and Test Equipment List ..............................................................1-2
1.3.2 Standard Tools and Test Equipment List ...........................................................1-2
1.4 Top and Bottom Housing ...........................................................................................1-2
1.5 Specifications.............................................................................................................1-4
1.6 Hardware Setup or Disassembly ...............................................................................1-5
1.6.1 Jumper Connections ..........................................................................................1-5
1.6.2 RS232 Interface .................................................................................................1-6
1.7 Operation ...................................................................................................................1-7
1.7.1 Power Supply .....................................................................................................1-7
1.8 Overview of the Controls ...........................................................................................1-7
1.8.1 Overview of the Display Indicators .....................................................................1-7
1.8.2 Overview of the Control Functions .....................................................................1-8
1.8.3 Menu Setup ........................................................................................................1-8
1.9 Calibration................................................................................................................1-10
1.9.1 Zero Calibration................................................................................................1-10
1.9.2 Span Calibration...............................................................................................1-11
1.9.3 Linearity Calibration..........................................................................................1-12
1.9.4 Calibration Test ................................................................................................1-13
1.9.5 Geographical Adjustment Factor ......................................................................1-13
1.10 RS232 Interface Connection....................................................................................1-14
1.10.1 Setting Communications Parameters ...............................................................1-14
1.10.2 Interface Commands ........................................................................................1-15
1.10.3 Output Format ..................................................................................................1-15
1.11 Legal For Trade (LFT) .............................................................................................1-16
CHAPTER 2 TROUBLESHOOTING
2.1
2.2
2.3
Introduction ................................................................................................................2-1
Visual Inspection........................................................................................................2-1
Diagnostic Guide .......................................................................................................2-2
2.2.1 Diagnosis............................................................................................................2-2
CHAPTER 3 MAINTENANCE PROCEDURES
3.1
Preventive Maintenance ............................................................................................3-1
3.1.1 Preventive Maintenance Checklist .....................................................................3-1
3.2 Replacement of Major Components ..........................................................................3-1
3.2.1 Main Printed Circuit Board (PCB) Replacement.................................................3-2
3.2.1 Display Printed Circuit Board (PCB) Replacement.............................................3-3
3.2.3 Membrane Replacement ....................................................................................3-4
CHAPTER 4 TESTING
4.1. Testing .......................................................................................................................4-1
4.2 Power Test.................................................................................................................4-1
4.3 Performance Tests Using a Scale Base ....................................................................4-1
4.3.1 Increasing/Decreasing Load Test.......................................................................4-2
4.3.2 Overload/Underload Test ...................................................................................4-2
4.4 Performance Tests Using a Load Cell Simulator.......................................................4-3
Ohaus Corporation www.ohaus.com
1
5000 Series T51 Indicators Service Manual
TABLE OF CONTENTS
CHAPTER 4 TESTING (continued)
4.5
4.6
4.7
Page No.
Calibration Retention Test .........................................................................................4-3
RS232 Interface Test................................................................................................. 4.3
Print Test ...................................................................................................................4-3
CHAPTER 5 PARTS LISTS & DIAGRAMS
5-1
5-2
5000 Series T51P Indicator: Housing & Internal Parts ..............................................5-2
5000 Series T51XW Indicator: Housing & Internal Parts...........................................5-4
APPENDIX A SETUP & CALIBRATION VALUES
Appendix A. Geographical Adjustment Values .................................................................. A-1
LIST OF TABLES
TABLE NO.
1-1
1-2
1-3
1-4
1-5
1-6
1-7
2-1
4-1
5-1
5-2
A-1
TITLE
Page No.
Specifications ........................................................................................................1-4
T51P RS232 Pin Configuration .............................................................................1-6
T51XW RS232 Terminal .......................................................................................1-6
Functions of Display Controls................................................................................1-8
T51 Menu Structure ..............................................................................................1-9
Interface Command Table...................................................................................1-15
Default Serial Output Format...............................................................................1-15
Diagnostic Guide ...................................................................................................2-3
Increasing/Decreasing Load Test..........................................................................4-2
T51P Indicator: Housing & Internal Parts ..............................................................5-3
T51XW Indicator: Housing & Internal Parts...........................................................5-5
Geographical Adjustment Values ......................................................................... A-1
LIST OF ILLUSTRATIONS
FIGURE NO.
1-1
1-2
1-3
1-4
1-5
1-6
1-7
1-8
1-9
1-10
1-11
1-12
1-13
1-14
2-1
5-1
5-1
TITLE
Top and Bottom Housing, and Rear Panel, T51P .................................................1-2
Top and Bottom Housing, and Rear Panel, T51XW..............................................1-3
Printed Circuit Board (PCB), T51 Indicator ...........................................................1-4
Load Cell wiring.....................................................................................................1-4
Open/shorted jumpers...........................................................................................1-4
RS232 Pins (T51P) ...............................................................................................1-5
RS232 Terminal (T51XW) .....................................................................................1-5
Battery charge symbol...........................................................................................1-6
T51 Display ...........................................................................................................1-6
T51 Display Indicator.............................................................................................1-6
T51P Wire Seal ...................................................................................................1-15
T51P Paper Seal .................................................................................................1-15
T51XW Wire Seal................................................................................................1-15
T51XW Paper Seal..............................................................................................1-15
Visual Checking Procedures .................................................................................2-1
Series 5000 T51P Indicator: Housing & Internal Parts..........................................5-2
Series 5000 T51XW Indicator: Housing & Internal Parts ......................................5-4
5000 Series T51 Indicators Service Manual
2
Ohaus Corporation www.ohaus.com
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