INTRODUCTION
DANGER
ORDERING PARTS
REPAIR NOTES
This service manual describes the latest service information
for the
IC-4088SR
PMR446 FM TRANSCEIVER at the time
of publication.
NEVER
connect the transceiver to an AC outlet or to a DC
power supply that uses more than 5.0 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 (100mW)
to the antenna connector. This could damage the trans-
ceiver's front end.
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
>
5030002520 LCD
L2-0494TAY
IC-4088SR Main unit
5 pieces
8810009560 Screw
PH BO M2x6 ZK IC-4088SR Chassis
10 pieces
Addresses are provided on the inside back cover for your
convenience.
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 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.
To upgrade quality, all electrical or mechanical parts and
internal circuits are subject to change without notice or
obligation.
MODEL
Antenna size
SYMBOL
IC-4088SR
Short
Long
EUR
EUR-1
Icom, Icom Inc. and are registered trademarks of Icom Incorporated (Japan) in the United States, the United Kingdom,
Germany, France, Spain, Russia and/or other countries.