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IC-T7H
Icom IC-T7H Service Manual
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SECTION 2
INSIDE VIEWS
•
LOGIC UNIT
AND 2F UNIT
2 - 1
•
1F UNIT
CPU system clock
(X1: CR534 5.03MHz)
CPU system clock
(IC1: M38267M8L-165GP)
Speaker
Initial matrix
Microphone amplifier/lpf
(IC2: BA4510F)
UHF band pass filter
(FI201: EFCH445MWN)
UHF RF amplifier*
(Q201: 2SC4226)
* Located under side of these points
AF power amplifier
(IC151: 2SC5226)
VHF RF amplifier*
(Q51: 2SC5226)
1st IF filter
(FI401: FL244)
2nd IF filter
(FI101: CFWM450E)
+3V regulater
(IC2: S-81335HG-K)
2F UNIT
LOGIC UNIT
CPU system clock
(IC1: M38267M8L-165GP)
DUAL
VCO board
Power amplifier
(Q402: 2SK3075)
P
A
board
Drive amplifier
(Q401: 2SK3074)
4
6
Table of Contents
Default Chapter
3
Table of Contents
3
Section 2 Inside Views
6
Section 3 Disassembly Instructions
6
Section 4 Circuit Description
7
Receiver Circuits
7
Transmitter Circuits
8
Pll Circuits
9
Power Supply Circuits
10
Other Circuits
10
Port Allocations
11
Section 5 Adjustment Procedures
12
Pll and Transmitter Adjustment
12
Receiver Adjustment
14
Section 6 Parts List
16
Logic Unit
20
Unit
28
Unit
30
Block Diagram
32
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Instruction Manual
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Icom IC-T7H Specifications
General
Brand
Icom
Model
IC-T7H
Category
Transceiver
Language
English
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