Icom
Service Manual for VHF FM Transceivers - F3GS & IC F3GS
Specs
Install
Parts list
BlLOCK Diagram
Accessories
Disassembly Instruction
Adjustment Procedures
PLL Adjustment
Page 1
SERVICE MANUAL
VHF FM TRANSCEIVERS
Page 1
Page 2
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Page 1
Page 2
Contents
VHF FM Transceivers
Ordering Parts
Introduction
Repair Notes
Table of Contents
‘ General
Section Specifications
‘ Transmitter
‘ Receiver
Main Unit TOP View
Inside Views
Bottom View
Disassembly Instruction
Disassembly and Option Instructions
Removing the Chassis Panel
Removing the Main Unit
Sponge
Optional Unit Installations
Receiver Circuits
Circuit Description
Transmitter Circuits
PLL Circuit
Power Supply Circuits Voltage Line
VCC
OPT
Output Expander IC IC10
Port Allocations
Preparation
Adjustment Procedures
GND
SPE
Clone
PLL Adjustment
Software Adjustment DC Power Supply
PLL Lock
PLL Adjustment
Main
Voltage
Software Adjustment
Squelch
Sensitivity
Level
SQL
Main Unit
Parts List
Variable
Ceramic
JB 1C
Accessories
Mechanical Parts and Disassembly
Chassis Parts
EP1 EP2 MP1 MP2
IC-F3GS parts
Transistor and FET’S
SEMI-CONDUCTOR Information
Diodes
Main Unit
Board Layouts
IC8
FI2
IC5
Cirq
BlLOCK Diagram
IC3C
Voltage Diagram
IC1
DTA144EU
Avref Vtref Toned Tonem Avcc
Section Voltage Diagram
16, Kamihigashi, Hirano-ku, Osaka 547-0002, Japan
16, Kamihigashi, Hirano-ku, Osaka, 547-0002, Japan
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