Icom IC-91A Service Manual page 2

INTRODUCTION
This service manual describes the latest service information
for the IC-91A VHF/UHF FM TRANSCEIVER, IC-91AD
VHF/UHF DIGITAL TRANSCEIVER at the time of
publication.
MODEL VERSION
U.S.A.
IC-91AD
Export
U.S.A.
Taiwan
Korea
IC-91A
Australia
Export
To upgrade quality, all electrical or mechanical parts and internal
circuits are subject to change without notice or obligation.
CAUTION
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.
DO NOT expose the transceiver to rain, snow or any liquids.
DO NOT reverse the polarities of the power supply when
connecting the transceiver.
DO NOT apply an RF signal of more than 20 dBm (100 mW)
to the antenna connector. This could damage the trans-
ceiver's front end.
ORDERING PARTS
Be sure to include the following four points when ordering
replacement parts:
1. 10-digit Icom parts number
2. Component name and informations
3. Equipment model name and unit name
4. Quantity required
<SAMPLE ORDER>
5030002880 LCD HLM7972-010100
8810009560 Screw PH BT M2×6 ZK
Addresses are provided on the inside back cover for your
convenience.
1. Make sure the problem is internal before disassembling the transceiver.
2. DO NOT open the transceiver until the transceiver is disconnected from its power source.
3. DO NOT force any of the variable components. Turn them slowly and smoothly.
4. DO NOT short any circuits or electronic parts. An insulated turning tool MUST be used for all adjustments.
5. DO NOT keep power ON for a long time when the transceiver is defective.
6. DO NOT transmit power into a signal generator or a sweep generator.
7. 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
Kingdom, Germany, France, Spain, Russia and/or other countries.
SYMBOL
USA
EXP
USA-1
TPE
KOR
AUS
EXP-1
EXP-2
IC-91A Main unit 5 pieces
IC-91A Chassis 10 pieces
REPAIR NOTES
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