Service manual icom f14

SERVICE MANUAL
VHF TRANSCEIVERS

iC-f14 iC-f14s iC-f15 iC-f15s

INTRODUCTION
This service manual describes the latest service information for the IC-F14/IC-F14S/IC-F15/IC-F15S VHF TRANSCEIVER at the time of publication.
MODEL IC–F14 IC–F14S IC–F15 IC–F15S EUR SYMBOL USA GEN USA GEN CH 16 2 16 2 136–174 MHz FREQUENCY

To upgrade quality, all electrical or mechanical parts and internalcircuits 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 8 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 morethan 20 dBm (100mW) 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. 2. 3. 4. 10-digit order numbers Component part number and name Equipment model name and unit name Quantity required

2260002840 Switch SKHLLFA010 8930063350 Lens 2775Lens IC-F14 IC-F14 Main unit Chassis 5pieces 10 pieces

Addresses are provided on the inside back cover for your convenience.

REPAIR NOTES
Make sure the problem is internal before disassembling the transceiver. DO NOT open the transceiver until the transceiver is disconnected from its power source. DO NOT force any of the variable components. Turn them slowly and smoothly. DO NOT short any circuits or electronic parts. Aninsulated turning tool MUST be used for all adjustments. DO NOT keep power ON for a long time when the transceiver is defective. DO NOT transmit power into a signal generator or a sweep generator. 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 beforeconnecting equipment to the transceiver. 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. 1. 2. 3. 4. 5. 6. 7.

TABLE OF CONTENTS

SECTION SECTION SECTION SECTION

1 2 3 4
4-1 4-2 4-3 4-4 4-5 4-6

SPECIFICATIONS INSIDE VIEWS DISASSEMBLY INSTRUCTIONS CIRCUIT DESCRIPITONRECEIVER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 TRANSMITTER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 PLL CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 OTHER CIRCUITS .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 POWER SUPPLY CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 PORT ALLOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

SECTION

5
5-1 5-2 5-3ADJUSTMENT PROCEDURES
PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 ADJUSTMENT CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 SOFTWARE ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

SECTIONSECTION SECTION SECTION

6 7 8 9
9-1 9-2 9-3

PARTS LIST MECHANICAL PARTS AND DISASSEMBLY SEMI-CONDUCTOR INFORMATION BOARD LAYOUTS
MAIN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1 ANT UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....