ICOM IC F111S User Manual

This service manual describes the latest service information
for the IC-F110S, IC-F111S and IC-F121S VHF MOBILE
TRANSCEIVER at the time of publication.

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.

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 transceiv-
er’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

1110003490 S.IC

TA31136FN

IC-F110S

MAIN UNIT

5 pieces

8810009990 Screw PH BT M3

×8 ZK IC-F110S  Bottom cover 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 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 40 dB to 50 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.

To upgrade quality, any electrical or mechanical parts and
internal circuits are subject to change without notice or
obligation.

MODEL

IC-F110S

IC-F111S

IC-F121S

VERSION

Europe

General

General

U.S.A.

SYMBOL

EUR

GEN

GEN

USA