Equipment information

Icom IC-475H Transceiver
Manufacturer
Icom
Model IC-475H
Date 1989
Category: Radio, Communication
Group Transceiver
Description 430 MHz ALL MODE TRANSCEIVER
Information
                                    

These manuals are available for the above equipment:

Icom -- IC-475H -- Service Manual
File name Icom-7453-Manual-Page-1-Picture
Manual Type Service Manual
Pages 123
Size 22.90 Mbytes (24016031 Bytes)
Language english
Revision
Manual-ID/Number A-1031H-N
Date 1989
Quality Scanned document, all readable.
Upload date
MD5 914ce7f98782ff3fd9c9f13a1b07ec6f
Downloads 109 since 06 January 2016
Information
This service manual covers ail service information related
to the theoretical, physical, mechanical and electrical
characteristics of the IC-475A/E/H 430MHz ALL MODE TRANSCEIVER.

SECTION 1
SPECIFICATIONS.....................................................................................................
1 — 1—2
SECTION 2 OUTSIDE AND INSIDE
VIEWS................................................................................
2 — 1-5
2-1 OUTSIDE
VIEWS....................................................................................................................
2—1
2-2 INSIDE
VIEWS........................................................................................................................
2 — 4
SECTION 3 BLOCK
DIAGRAMS............................................................................................................
3 — 1
SECTION 4 CIRCUIT
DESCRIPTION...........................................................................................
4 — 1-14
4-1 RECEIVER
CIRCUITS............................................................................................................
4— 1
4-2 TRANSMITTER
CIRCUITS....................................................................................................
4—3
4-3 STANDBY CONTROL
CIRCUIT............................................................................................
4—6
4-4 PLL
CIRCUITS.....................................................................................................................
4—6
4 - 5 LOGIC
CIRCUITS..................................................................................................................
4— 9
4 - 6 SWITCHING REGULATOR CIRCUIT (IC-475A/E
ONLY).................................................. 4—14
SECTION 5 MECHANICAL PARTS AND
DISASSEMBLY......................................................
5-1-7
5 -1 FRAME
DISASSEMBLY........................................................................................................
5 — 1
5 - 2 FRONT PANEL
DISASSEMBLY..........................................................................................
5 — 2
5-3 REAR PANEL
DISASSEMBLY...........................................................................................
5 — 3
5 - 4 FRONT, LOGIC AND PLL UNITS CONNECTOR
ASSEMBLY.......................................... 5 — 4
5-5 FRONT, MAIN AND RF YGR UNITS CONNECTOR
ASSEMBLY.................................... 5 — 5
5-6 PA AND REG UNITS CONNECTOR ASSEMBLY
(IC-475A/E).......................................... 5 — 6
5-7 PA, CTRL AND FILTER UNITS CONNECTOR ASSEMBLY
(IC-475H).......................... 5 — 7
SECTION 6 MAINTENANCE AND
ADJUSTMENT.................................................................
6 — 1-25
6 -1 PREPARATION BEFORE
SERVICING................................................................................
6 — 1
6-2 PLL
ADJUSTMENT.............................................................................................................
6—2
6-3 FREQUENCY
ADJUSTMENT................................................................................................
6—4
6-4 RECEIVER
ADJUSTMENT...................................................................................................
6—6
6 - 5 TRANSMITTER ADJUSTMENT
(IC-475H)...........................................................................
6 — 12
6 - 6 TRANSMITTER ADJUSTMENT
(IC-475A/E).......................................................................
6 — 18
6-7 TONE
ADJUSTMENT.........................................................................................................
6 — 24
SECTION 7 BOARD
LAYOUTS.....................................................................................................
7 — 1-22
7-1 FRONT UNITS
(1)...............................................................................................................
7— 1
7-2 FRONT UNIT
(2).....................................................................................................................
7—2
7-3 LOGIC AND SENSOR
UNITS.............................................................................................
7—4
7-4 PLL AND DDS
UNITS...........................................................................................................
7—6
7-5 MAIN
UNIT............................................................................................................................
7—8
7-6 RF YGR UNIT
(IC-475A/E)...................................................................................................
7 — 10
7-7 RF YGR UNIT
(IC-475H).......................................................................................................
7—12
7-8 REG UNIT (IC-475A/E
ONLY)...............................................................................................
7 — 14
7-9 PA UNIT
(IC-475A/E).............................................................................................................
7 — 16
7 -10 CTRL UNIT (IC-475H
ONLY)...............................................................................................
7 — 18
7-11 PA UNIT
(IC-475H)...............................................................................................................
7 — 20
7 -12 FILTER UNIT (IC-475H
ONLY)...........................................................................................
7 — 22
SECTION 8 VOLTAGE
DIAGRAMS............................................................................
8 — 1 ~ 7
8-1 FRONT
UNIT.......................................................................................................................
8—1
8-2 LOGIC
UNIT.........................................................................................................................
8-2
8-3 PLL
UNIT............................................................................................................................
8 — 3
8-4 MAIN
UNIT...........................................................................................................................
8 — 4
8-5 RF YGR
UNIT.......................................................................................................................
8 — 5
8 - 6 REG AND PA UNITS (IC-475A/E
ONLY)...........................................................................
8 — 6
8-7 CTRL, PA AND FILTER UNITS (IC-475H
ONLY).............................................................
8 — 7
SECTION 9 PARTS
LIST...........................................................................................
9 — 1-20
Icom-7453-Manual-Page-1-Picture
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