Icom IC R8500 Service Manual Addendum page 271
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Also See for IC R8500:
- Service manual (101 pages) ,
- Instruction manual (48 pages) ,
- Service manual (100 pages)
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• 9-3
• RF-C UNIT (TOP VIEW)
J4
GND
1
NC
L
5
5
13.8
NC
+5
Q
0 1
AGC
+8
DE
GND
STBA
Q
1 1
1 C
7 4
R
8 6
Mdat
D
Mck
STBC
1 C
1 3
C
7 9
C
L
3 8
L
5 7
GND
L
8 5
1 C
3 2
1 C
0 3
GND
15
C
8 9
C
9 9
L
2 8
R
7 7
L
9 5
7 Q
1 C
6 0
D
R
7 9
6 Q
L
6
2
L
6
0
L
6
3
F
I
1
1 C
6 2
L
6
5
R
3 8
8 Q
1 C
3 1
R
4 9
1 C
7 1
L
2 7
1 C
4 1
R
6 8
R
2 9
1 C
2 4
L
0 7
R
0 9
L
6
6
R
1 9
R
9 8
• CONV-B UNIT (TOP VIEW)
1 C
9 0
R
5 2
C
8 4
C
6 4
R
6 2
D
8 1
C
5 4
D
0 1
Q
2 1
C
1 5
1 C
8 0
C
2 5
R
7 4
C
3 9
R
1 7
1 C
4 4
C
4 9
1 C
0 0
I
8 C
L
0 4
L
2 3
R
5 4
1 C
2 0
L
2 4
C
0 8
L
1 3
1 C
3 7
R
6 4
C
1 8
C
4 8
C
2 8
C
3 6
R
8 5
1 C
3 0
C
3 8
L
5 2
1 C
2 4
1 C
6 7
D
3 1
1 C
5 7
C
9 7
R
3 4
C
1 6
C
4 5
C
0 6
1 C
2 2
1 C
5 1
C
8 7
C
5 5
I
4 C
L
4 2
C
6 7
L
0 5
1 C
5 6
1 C
4 7
L
0 3
1 C
6 6
1 C
3 6
1 R
0 0
C
5 7
R
2 4
D
4 1
R
4 3
L
2 5
R
1 4
R
0 4
1 C
3 1
1 C
4 1
1 C
6 4
C
6 6
C
7 6
R
7 3
I
6 C
J
2
1 C
8 4
L
9 5
C
1 P
R
8 3
D
2 2
C I
0 1
1 C
1 1
C
2 P
C
P
2
C
6 1
5 D
Q
5 1
8 L
7 L
L
5
4
Q
6 1
C
4 2
C
3 2
R
9 1
L
1 1
L
0 1
C
5 2
R
2 6
5 1
C
1 P
3 Q
7 8
R
7 6
C
9 8
L
3 5
R
4 6
C
2 3
R
0 6
R
1 6
L
1
4 D
1 1
C
9 3
C
7 3
L
9 1
7 D
L
7 1
6 C
8 C
3 L
L
4 2
L
3 2
7 C
C
1 5
C
9 4
L
7 2
5 R
L
5 2
C
3 5
L
4 3
L
0 3
L
2 3
C
9 5
C
7 6
L
8 3
L
6 3
R
1
L
5 3
L
9 3
C
5 6
C
3 6
C
1 6
B
6
5
5
9
C
9 6
L
4 4
L
0 4
C
5 7
L
2 4
L
7 4
L
9 4
L
5 4
M
P
5
B
6
5
6
1
A
C
7 4
L
7 1
M
P
5
R
4 2
L
1 2
D
7 1
L
0 2
R
3 2
C
8 3
R
5 1
R
7 1
C
9 3
9 D
R
6 1
C
4 4
L
6 1
C
7 3
R
8 1
D
6 1
C
6 3
D
5 1
C
4 3
1 R
8 0
1 R
7 0
8 D
7 D
R
0 3
C
2 4
C
3 4
M
P
2
I
9 C
R
L
2
R
1 3
L
1 4
C
9 2
L
2 1
R
7 6
1 C
1 2
1 C
0 2
R
9 7
L
6 4
R
2 5
R
1 5
1 C
9 2
1 R
R
6 7
C
4 2
R
2 1
1 C
0 7
L
1 1
C
8 1
1 D
1 C
6 3
1 C
M
P
5
6 C
1 R
4 0
2 C
C
1 1
1 R
3 0
R
7 7
1 C
2 5
4 L
1 C
9 3
1 C
7 3
C
4 1
R
4 5
5 D
R
1 6
C
6 1
4 R
9 C
C
7 1
2 R
R
5 5
1 C
4 5
R
5
5
M
P
6
9 - 5
• MIX-A UNIT (TOP VIEW)
J
2
M
P
3
R
4 1
I
2 C
C
8 2
5 D
C
9 2
R
0 1
C
0 6
2 D
3 L
C
4 3
C
3 5
C
5 3
C
3 2
L
2 1
L
9 1
C
7 3
C
4 5
C
7 4
C
8 4
L
6 1
C
0 5
L
8 1
C
2 5
C
3 3
L
1 1
C
5 5
1 Q
P E
8 6
P E
7 6
P E
6 6
J
4
P E
5 6
P E
4 6
P E
3 6
P E
2 6
3 Q
P E
1 6
I
3 C
2 Q
2 L
R
7 1
B
6
5
5
H
1
3
5
H
1
3
0
H
1
2
5
H
1
2
0
H
1
1
5
H
1
1
0
H
1
0
5
H
1
0
0
H
9
5
H
9
0
H
8
5
H
8
0
8 R
7 L
7 C
4 D
C
6 1
R
0 2
J1
GND
10
C
1 1
–8
C
2 1
5 R
C
3 1
3 D
GND
J
3
6 L
+8
2 C
1 L
F2M
3 C
M
P
5
F1M
1 R
1 D
GND
MI5V
FILS
GND
1
8
A
t
=
1
.
6
,
(
2
)
• RF-D UNIT (TOP VIEW)
H
7
5
H
7
0
H
6
5
H
6
0
H
5
5
H
5
0
H
4
5
H
4
0
H
3
5
H
3
0
H
2
5
H
2
0
H
1
5
H
1
0
H
5
H
0
J3
GND
1
+24
F1
F2
F3
F4
MI5V
SW
F2M
F1M
+8
LVDA
AGC
–8
GND
15
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