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Icom Manuals
Transceiver
IC-375A
Service manual
Icom IC-375A Service Manual
220 mhz all mode transceiver
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Table Of Contents
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Contents
Table of Contents
Bookmarks
Table of Contents
Table of Contents
Specifications
Outside and Inside Views
Front Panel
Inside Views
PLL and Logic Units
Main and RF YGR Units
PA and REG Units
Block Diagram
Circuit Description
Receiver Circuits
Antenna - Mixer Circuit
Noise Blanker Circuit
3Rd Mixer Circuit
FM Squelch, FM S-Meter and Center Meter Circuits
Transmitter Circuits
CW Mode
TX Amp Antenna
Standby Control Circuit
PLL Circuits
Reference Oscillator Circuit
Main Loop
Sub Loop
Direct Digital Synthesizer Unit
PLL Data
Logic Circuits
Cpu
FM Mode
CW, LSB or USB Mode
Matrix
Switching Regulator Circuit
Mechanical Parts and Disassembly
Frame Disassembly
Front Panel Disassembly
Front, Logic and PLL Units Connector Assembly
Maintenance and Adjustments
Preparation before Servicing
PLL Adjustment
PLL and DDS Units
Frequency Adjustment
Main Unit
Receiver Adjustment
Transmitter Adjustment
Board Layouts
Front Units
PLL Unit
DDS Unit
Voltage Diagrams
Logic Unit
Parts List
Schematic Diagram
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