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IC-775DSP
ICOM IC-775DSP Manuals
Manuals and User Guides for ICOM IC-775DSP. We have
6
ICOM IC-775DSP manuals available for free PDF download: Service Manual, Instruction Manual, Maintenance Manual
Icom IC-775DSP Service Manual (146 pages)
HF All Band Transceiver
Brand:
Icom
| Category:
Transceiver
| Size: 60.31 MB
Table of Contents
Introduction
2
Ordering Parts
2
Repair Notes
2
Table of Contents
3
Specifications
4
Disassembly and Option Installations
5
Top and Bottom Covers
5
PA Unit
5
REG Unit
5
Option Installations
6
Front Block
6
UI-100 DSP Unit
6
Optional Filter
7
Filter Selection
7
UT-66 Voice Synthesizer Unit
7
CR--282 High-Stability Crystal Unit
8
AC Voltage Selection
9
Backup Battery Replacement
9
Inside Views
10
Bottom View
10
Top View
11
Circuit Description
12
Receiver Circuits
12
RF Switching Circuit
12
RF Bandpass Filter Circuit
12
1St if Circuit
13
2Nd if Circuit
13
2Nd Mixer Circuit
13
Noise Blanker Circuit
13
4Th Mixer and 4Th if Circuits
14
Twin PBT Circuit
14
IF Notch Circuit
14
AG Circuit
14
SSB/CW Demodulator Circuit
15
AM Demodulator Circuits
15
FM Demodulator Circuit
15
APF and AF Low-Pass Filter Circuits
15
AF Amplifier Circuit
16
Transmitter Circuits
16
Microphone Amplifier Circuit
16
VOX Circuit
16
FM and am Modulation Circuits
17
RF Speed Compressor Circuit
17
IF Amplifier
17
RF Circuit
17
APC Circuit
18
Temperature Protection Circuit
18
Monitor Circuit
18
RF, SWR, ALC, COMP, Meter Circuits
18
PLL Circuits
19
1St lo PLL Circuits
19
Frequency Construction
19
Reference Loop PLL
19
2Nd lo and Reference Oscillator Circuits
20
3Rd/4Th lo and Receiver/Transmit/Monitor BFO Circuits
20
Antenna Tuner Circuits
20
Matching Circuit
20
Detector Circuit
21
Motor Control Circuit
21
Antenna Tuner CPU Port Allocation
21
SWR Detector
21
Logic Circuits
22
Band Selection Data
22
Main CPU Port Allocations
22
SUB CPU Port Allocations
23
I/O Expander Port Allocations
23
Output Ports
23
DSP Circuits
24
DSP Receiving
24
DSP Transmitting
24
Adjustment Procedures
25
Preparation before Servicing
25
Required Test Equipment
25
Connection
25
PLL Adjustment
26
PLL Unit
27
Receiver Adjustment
28
IF and RF Units
29
Transmitter Adjustment
32
Tuner Unit Adjustment
38
CTRL Unit
38
Parts List
39
Mechanical Parts
74
Semi-Conductor Information
85
Transistor and Fet's
85
Diodes
86
Board Layouts
87
DSP Unit
87
SW-A Unit
89
MIC Unit
90
SW-B Unit
93
Display Unit
93
VR-A Unit
95
Main Unit
97
IF Unit
104
Voltage Diagram/Block Diagram
119
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Icom IC-775DSP Service Manual (146 pages)
all band
Brand:
Icom
| Category:
Transceiver
| Size: 10.35 MB
Table of Contents
Table of Contents
3
Specifications
4
Disassembly Instructions
5
Option Installations
6
Section 3 Inside Views
10
Section Inside Views
10
Section 4 Circuit Description
12
Transmitter Circuits
16
Antenna Tuner Circuits
20
Logic Circuits
22
Dsp Circuits
24
Preparation before Servicing
25
Pll Adjustment
26
Receiver Adjustment
28
Transmitter Adjustment
32
Tuner Unit Adjustment
38
Section 6 Parts List
39
Section 8 Semi-Conductor Information
85
SECTION 9 BOARD LAYOUTS 9 - 1 to
87
Dsp Unit
87
Sw-Aunit
89
Sw-Band Display Units
93
Vr-Aunit
95
Main Unit
97
Rfunit
101
If Unit
104
Pll Unit
108
Pa Unit
112
Filter Unit
114
Ctrl Unit
116
Relay Unit
118
ICOM IC-775DSP Instruction Manual (70 pages)
HF Transceiver
Brand:
ICOM
| Category:
Transceiver
| Size: 9.21 MB
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ICOM IC-775DSP Instruction Manual (67 pages)
ICOM IC-775: User Guide
Brand:
ICOM
| Category:
Transceiver
| Size: 15.37 MB
Icom IC-775DSP Maintenance Manual (6 pages)
Brand:
Icom
| Category:
Transceiver
| Size: 1.32 MB
Table of Contents
Display Dimmer Adjustment
2
Optional Filter Installation
4
Fuse Replacement
6
Backup Battery Replacement
6
ICOM IC-775DSP Maintenance Manual (6 pages)
ICOM IC-775DSP: User Guide
Brand:
ICOM
| Category:
Two-Way Radio
| Size: 1.16 MB
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