Icom PMR446 Service Manual page 2

INTRODUCTION
This service manual describes the latest service information
for the IC-446S PMR446 FM TRANSCEIVER at the time of
publication.
VERSION SYMBOL
EUR
Europe
EUR-1
GEN
General
GEN-1
To upgrade quality, all electrical or mechanical parts and
internal circuits are subject to change without notice or oblig-
ation.
DANGER
NEVER connect the transceiver to an AC outlet or to a DC
power supply that uses more than 5 V. Such a connection
could cause a fire hazard and/or electric shock.
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.
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>
1110002820 S.IC NJM2100M
8810009560 Screw PH BO M2x6 ZK IC-446S
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 or 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.
BODY COLOR
BLACK
YELLOW
BLACK
YELLOW
IC-446S MAIN UNIT 5 pieces
Chassis 10 pieces
REPAIR NOTES