Icom IC-F4TR Service Manual page 2

INTRODUCTION
This service manual describes the latest service information
for the IC-F4TR UHF TRUNKED RADIO at the time of
publication.
To upgrade quality, all electrical or mechanical parts
and internal circuits are subject to change without
notice or obligation.
DANGER
NEVER
connect the transceiver to an AC outlet or to a
DC power supply that uses more than 10 V. This will ruin
the transceiver.
DO NOT
expose the transceiver to rain, snow or any
liquids.
DO NOT
reverse the polarrities of the power supply
when connecting the tranceiver.
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.
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>
1110001810 S.IC TA7368F
8810009560 Screw PH B0 2 × 6 ZK
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 tuning 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 40 dB or 50 dB attenuator between the transceiver and a deviation meter or spectrum analyser when
using such test equipment.
8. READ the instructions of test equipment thoroughly before connecting equipment to the transceiver.
IC-F4TR MAIN UNIT 1 piece
IC-F4TR CHASSIS 6 pieces
REPAIR NOTES
24 keys 7 keys