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Manuals
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Icom Manuals
Transceiver
IC-775DSP
Service manual
Icom IC-775DSP Service Manual
Hf all band transceiver
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Also See for IC-775DSP
:
Instruction manual
(70 pages)
,
Maintenance manual
(6 pages)
,
Service manual
(146 pages)
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Contents
Table of Contents
Bookmarks
Table of Contents
Introduction
Ordering Parts
Repair Notes
Table of Contents
Specifications
Disassembly and Option Installations
Top and Bottom Covers
PA Unit
REG Unit
Option Installations
Front Block
UI-100 DSP Unit
Optional Filter
Filter Selection
UT-66 Voice Synthesizer Unit
CR--282 High-Stability Crystal Unit
AC Voltage Selection
Backup Battery Replacement
Inside Views
Bottom View
Top View
Circuit Description
Receiver Circuits
RF Switching Circuit
RF Bandpass Filter Circuit
1St if Circuit
2Nd if Circuit
2Nd Mixer Circuit
Noise Blanker Circuit
4Th Mixer and 4Th if Circuits
Twin PBT Circuit
IF Notch Circuit
AG Circuit
SSB/CW Demodulator Circuit
AM Demodulator Circuits
FM Demodulator Circuit
APF and AF Low-Pass Filter Circuits
AF Amplifier Circuit
Transmitter Circuits
Microphone Amplifier Circuit
VOX Circuit
FM and am Modulation Circuits
RF Speed Compressor Circuit
IF Amplifier
RF Circuit
APC Circuit
Temperature Protection Circuit
Monitor Circuit
RF, SWR, ALC, COMP, Meter Circuits
PLL Circuits
1St lo PLL Circuits
Frequency Construction
Reference Loop PLL
2Nd lo and Reference Oscillator Circuits
3Rd/4Th lo and Receiver/Transmit/Monitor BFO Circuits
Antenna Tuner Circuits
Matching Circuit
Detector Circuit
Motor Control Circuit
Antenna Tuner CPU Port Allocation
SWR Detector
Logic Circuits
Band Selection Data
Main CPU Port Allocations
SUB CPU Port Allocations
I/O Expander Port Allocations
Output Ports
DSP Circuits
DSP Receiving
DSP Transmitting
Adjustment Procedures
Preparation before Servicing
Required Test Equipment
Connection
PLL Adjustment
PLL Unit
Receiver Adjustment
IF and RF Units
Transmitter Adjustment
Tuner Unit Adjustment
CTRL Unit
Parts List
Mechanical Parts
Semi-Conductor Information
Transistor and Fet's
Diodes
Board Layouts
DSP Unit
SW-A Unit
MIC Unit
SW-B Unit
Display Unit
VR-A Unit
Main Unit
IF Unit
Voltage Diagram/Block Diagram
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Main Unit
2
Voltage Diagram/Block Diagram
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See also:
Maintenance Manual
,
Instruction Manual
Table of
Contents
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