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IC-F3GT
Icom IC-F3GT Service Manual
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SECTION 2
INSIDE VIEWS
• MAIN UNIT
Power amplifier
(Q1: 2SK2974)
Antenna swtching circuit
(D1, D2, D8: MA77)
T
OP VIEW
BO
TT
OM VIEW
RF amplifier
(Q12: 3SK293)
VCO circuit
1st mixer
Q13:
3SK239A
[OTHER]
3SK320
B
Low-pass filter circuit
TX/RX switch
(D3, D4: MA77)
Mic amplifier circuit
APC
IC3A: NJM2902V
Q37: DT
A144EU
FM IF IC
(IC2: T
A31
136FN(D))
CPU
(IC8:
HD6433876B50H)
EEPROM
IC7:
HN58X2432TI [OTHER]
HN58X2464TI
H
D/A
converter
(IC10: M62363FP-650C)
PLL
reference oscillator
X1:
CR-664A
15.3 MHz [OTHER]
CR-671A
15.3 MHz
A
,
D
Crystal filter
FI1:
FL-31
1 [OTHER]
FL-312
C
FL-333
F
,
G
FL-334
E
PLL
IC
(IC1:
µ
PD3140GS)
IF amplifier
(Q14: 2SC4215 O)
()
()
()
()
()
A
: W/N-type
B
: ETS/CEPT version
C
: W-type of [GEN]
D
: EIA/TIA
version
E
: W-type of ETS/CEPT
version
F
: N-type of ETS/CEPT version
G
: M (20 kHz)-type
H
: 100 channel version
4
6
Table of Contents
Table of Contents
3
Section 1 Specifications
5
Section 2 Inside Views
5
Section 3 Disassembly and Option Instructions
6
Disassembly Instruction
6
Optional Unit Installations
7
Section 4 Circuit Description
8
Receiver Circuits
8
Transmitter Circuits
9
Pll Circuits
10
Power Supply Circuits
10
Port Allocations
11
Section 5 Adjustment Procedures
12
Preparation
12
Pll Adjustment
15
Main Unit
18
Section 8 Semi-Conductor Information
26
Section 9 Board Layouts
26
General and Eia/Tia Versions (Except W/N-Type)
26
Ets/Cept Version
28
W/N-Type
30
Parts List
32
Disassembly Information
32
Voltage Diagram
33
Board Layout
33
Block Diagram
34
Table of Contents
43
Section 1 Specifications
45
Section 2 Inside Views
45
Section 3 Disassembly and Option Instructions
46
Disassembly Instruction
46
Optional Unit Installations
47
Section 4 Circuit Description
48
Receiver Circuits
48
Transmitter Circuits
49
Pll Circuits
50
Power Supply Circuits
50
Section 5 Adjustment Procedures
52
Preparation
52
Pll Adjustment
55
Software Adjustment
56
Section 8 Semi-Conductor Information
67
Section 9 Board Layouts
67
Low Band
67
440-470 Mhz BAND EXCEPT W/N-TYPE
69
470-500 Mhz and HIGH BANDS
71
W/N-Type
73
Parts List
75
Disassembly Information
75
Voltage Diagram
76
Board Layout
76
Block Diagram
77
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Instruction Manual
32 pages
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Icom IC-F3GT Specifications
General
Brand
Icom
Model
IC-F3GT
Category
Transceiver
Language
English
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