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IC-737
Service manual
Icom IC-737 Service Manual
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:
Instruction manual
(65 pages)
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Contents
Table of Contents
Bookmarks
Table of Contents
Repair Notes
Table of Contents
Specifications
Disassembly
Connector Locations
Inside Views
Circuit Description
Receiver Circuits
RF Switching Circuit (ANT-SW and Main Circuits)
RF Bandpass Filter Circuit (Main Unit)
1St if Circuit (Main Unit)
2Nd Mixer Circuit (Main Unit)
Noise Blander Circuit (Main Unit)
2Nd if Circuit (Main Unit)
3Rd Mixer and 3Rd if Circuits (Main Unit)
BFO Circuit (Main Unit)
PBT Circuit (Main Unit)
SSB/CW Demodulator Circuits (Main Unit)
AM Demodulator Circuits (Main Unit)
FM Demodulator Circuit (FMAM Unit)
AGC Circuit (Main Unit)
Transmitter Circuits
Squelch Circuit (Main Unit)
Microphone Amplifier Circuit (MIC Amp Board and AF Unit)
AF Notch Circuit (Notch Board)
Balanced Modulator (Main Unit)
FM and am Modulation Circuits (FMAM Unit)
CW Keying Circuit (Main Unit)
IF Amplifier (Main Unit)
RF Circuit (Main and PA Units)
Low-Pass Filter Circuit (Filter Unit)
ALC Circuit (Main Unit)
APC Circuit (Main Unit)
PLL Circuits
Temperature Protection Circuit (PA Unit)
RF Meter Circuit (Main Unit)
Logic Circuits
1St lo PLL Circuit (PLL Unit and DDS Board)
Main Loop Circuit (PLL Unit)
Band Selection Data (PLL Unit)
Key Matrix
CPU (Logic Unit)
I/O Interface Port Allocations
Antenna Tuner Circuits
Matching Circuit (Tune Unit)
Detector Circuit (CTRL Unit)
Motor Control Circuit (CTRL Unit)
Regulator Circuits
Antenna Tuner CPU Port Allocations
Adjustment Procedures
Preparation before Servicing
Required Test Equipment
Connection
PLL Adjustment
Receiver Adjustment
Transmitter Adjustment
Antenna Tuner Adjustment
Parts List
Mechanical Parts
Exploded Drawings
Board Layouts
Block Diagram
Voltage Diagram
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Instruction Manual
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