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IC-F1721/D
Icom IC-F1721/D User Manual
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9 - 3
13
57
24
6
8
H5
H10
H15
H20
H25
H30
H35
H40
H45
H50
H55
H60
H65
H70
H75
H80
H85
H90
H95
H100
H105
H110
H115
H120
H125
H130
H135
H140
H145
H150
H155
H160
H165
H0
V5
V10
V15
V0
V25
V30
V35
V20
V40
to MIC JA
CK
CLO
PTT
MIC
CLI
8V
AFO
MICE
GND
J2
7
8
1
2
AF VOLUME
9-2 FRONT
-B UNIT (for IC-F1800
s
eries)
• T
OP
VIEW
The combination of this page and the ne
xt page shows
the unit la
yout in the same configuration as the actual
P.
C.
Board.
37
39
Table of Contents
Table of Contents
3
Specifications
4
Inside Views
5
Section 3 Disassembly Instructions
7
Section 4 Circuit Description
8
Receiver Circuits
8
Transmitter Circuits
10
Pll Circuits
11
Power Supply Circuits
11
Other Circuits
12
Port Allocations
13
Section 5 Adjustment Procedures
15
Preparation
15
Lcd Contrast Adjustment
18
Soft Ware Adjustment
18
Section 6 Parts List
23
Section 7 Mechanical Parts and Disassembly
33
Section 8 Semi-Conductor Information
35
Section 9 Board Layouts
36
FRONT-A UNIT (for IC-F1700 Series)
36
FRONT-B UNIT (for IC-F1800 Series)
38
Main Unit
41
Block Diagram
42
Voltage Diagram
43
FRONT-A UNIT (for IC-F1700 Series)
43
FRONT-B UNIT (for IC-F1800 Series)
44
Main Unit
45
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Icom IC-F1721/D Specifications
General
Brand
Icom
Model
IC-F1721/D
Category
Transceiver
Language
English
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