Icom IC-7400 Service Manual page 2

INTRODUCTION
This service manual describes the latest service information
for the IC-7400 HF/VHF TRANSCEIVER.
VER. NO.
VERSION
#03 Europe
#04 France
#08 Italy
#09 Spain
#10 Korea
To upgrade quality, any electrical or mechanical parts and
internal circuits are subject to change without notice or
obligation.
ORDERING PARTS
Be sure to include the following four points when ordering
replacement parts:
1. 10-digit order numbers
2. Component part number and name
3. Equipment model name and unit name
4. Quantity required
<SAMPLE ORDER>
1110003870 S.IC NJM2058M-T1 IC-7400
BiH M3 × 8 ZK IC-7400
8810005770 Screw
Addresses are provided on the inside back cover for your
convenience.
NEVER connect the transceiver to an AC outlet or to a DC
power supply that uses more than 16 V. This will ruin the
transceiver.
SYMBOL
DO NOT expose the transceiver to rain, snow or any liquids.
EUR
DO NOT reverse the polarities of the power supply when
FRA
connecting the transceiver.
ITR
DO NOT apply an RF signal of more than 20 dBm (100 mW)
ESP
to the antenna connector. This could damage the transceiv-
KOR
er's front end.
1. Make sure a problem is internal before disassembling the
2. DO NOT open the transceiver until the transceiver is
3. DO NOT force any of the variable components. Turn
4. DO NOT short any circuits or electronic parts. An insu-
5. DO NOT keep power ON for a long time when the trans-
MAIN UNIT 5 pieces
6. DO NOT transmit power into a signal generator or a
Top cover 10 pieces
7. ALWAYS connect a 50 dB to 60 dB attenuator between
8. READ the instructions of test equipment thoroughly
DANGER
REPAIR NOTES
transceiver.
disconnected from its power source.
them slowly and smoothly.
lated tuning tool MUST be used for all adjustments.
ceiver is defective.
sweep generator.
the transceiver and a deviation meter or spectrum ana-
lyzer when using such test equipment.
before connecting equipment to the transceiver.