This service manual describes the latest service information
for the IC-M604 VHF MARINE TRANSCEIVER at the time
of publication.
NEVER connect the transceiver to an AC outlet or to a DC
power supply that uses more than 15.6 V. This will ruin the
transceiver.
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
transceiver’s front end.
To upgrade quality, any electrical or mechanical parts and
internal circuits are subject to change without notice or
obligation.
MODEL
VERSION
MICROPHONE
COLOR
IC-M604
USA
HM-126RB
BLACK
USA-1
HM-126RG
GRAY
sure to include the following four points when ordering
acement parts:
0-digit order numbers
omponent part number and name
quipment model name and unit name
Quantity required
<SAMPLE ORDER>
1110003490 S.IC
TA31136FN
IC-M604
MAIN UNIT
5 pieces
8820001210 Screw 2438 screw
IC-M604
Top cover
10 pieces
Addresses are provided on the inside back cover for your
convenience.
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.
ORDERING PARTS
1. Make sure a 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 insu-
lated tuning tool MUST be used for all adjustments.
5. DO NOT keep power ON for a long time when the trans-
ceiver is defective.
6. DO NOT transmit power into a signal generator or a
sweep generator.
7. ALWAYS connect a 50 dB to 60 dB attenuator between
the transceiver and a deviation meter or spectrum ana-
lyzer when using such test equipment.
8. READ the instructions of test equipment thoroughly
before connecting equipment to the transceiver.
REPAIR NOTES
INTRODUCTION
DANGER
fineline6
