ICOM IC-E7 Service Manual pages

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SERVICE
MANUAL
VHF/UHF DUALBAND FM TRANSCEIVER
S-14217HZ-C1
Nov. 2005
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INTRODUCTION
This service manual describes the latest service information
for the IC-E7 VHF/UHF DUALBAND FM TRANSCEIVER at
the time of publication.
MODEL
IC-E7
VERSION
Europe
Italy
France
United Kingdom
SYMBOL
EUR
ITR
FRA
UK
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To upgrade quality, all electrical or mechanical parts and internal
circuits are subject to change without notice or obligation.
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DANGER
irm
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ere
DO NOT reverse the polarities of the power supply when
connecting the transceiver.
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DO NOT expose the transceiver to rain, snow or any liquids.
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NEVER connect the transceiver to an AC outlet or to a DC
power supply 3.7 V. Such a connection could cause a fire or
electric hazard.
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DO NOT apply an RF signal of more than 20 dBm (100 mW)
to the antenna connector. This could damage the transceiver's front end.
ORDERING PARTS
Be sure to include the following four points when ordering
replacement parts:
1.
2.
3.
4.
10-digit Icom parts number
Component name and informations
Equipment model name and unit name
Quantity required
<SAMPLE ORDER>
5030002860 LCD
A01B004X
8810008990 Screw PH B0 2×10 ZK
IC-E7
IC-E7
Main unit 5 pieces
Chassis 10 pieces
Addresses are provided on the inside back cover for your
convenience.
REPAIR NOTES
1.
2.
3.
4.
5.
6.
7.
Make sure the problem is internal before disassembling the transceiver.
DO NOT open the transceiver until the transceiver is disconnected from its power source.
DO NOT force any of the variable components. Turn them slowly and smoothly.
DO NOT short any circuits or electronic parts. An insulated turning tool MUST be used for all adjustments.
DO NOT keep power ON for a long time when the transceiver is defective.
DO NOT transmit power into a signal generator or a sweep generator.
ALWAYS connect a 30 dB to 40 dB attenuator between the transceiver and a deviation meter or spectrum analyzer when
using such test equipment.
8. READ the instructions of test equipment thoroughly before connecting equipment to the transceiver.
Icom, Icom Inc. and
logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United
Kingdom, Germany, France, Spain, Russia and/or other countries.
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TABLE OF CONTENTS
SECTION 1
SPECIFICATIONS
INSIDE VIEWS
SECTION 3
DISASSEMBLY INSTRUCTIONS
SECTION 4
CIRCUIT DESCRIPITON
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SECTION 2
RECEIVER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 1
4-2
TRANSMITTER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 2
4-3
PLL CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 3
PORT ALLOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 4
POWER SUPPLY CIRCUITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 5
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4-5
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4-4
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4-1
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SECTION 5
5-2
FREQENCY AND TRANSMIT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 - 4
5-3
RECEIVE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 5
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PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 1
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ADJUSTMENT PROCEDURES
5-1
PARTS LIST
SECTION 7
MECHANICAL PARTS AND DISASSEMBLY
SECTION 8
SEMICONDUCTOR INFORMATION
SECTION 9
BOARD LAYOUTS
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SECTION 6
9-1
MAIN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 1
9-2
PA BOARD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 1
9-3
VCO BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 1
SECTION 10
BLOCK DIAGRAM
SECTION 11
CIRCUIT DIAGRAM
SECTION 12
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