Icom IC R8500 Service Manual Addendum page 269

• 9-2
• MAIN-A UNIT
(TOP VIEW)
J20
1 C 4 4
SPE 3
2 C 6 3
NC
2 C 5 3
INSPE 1
2 C 8 3
L 3 4
J 1 4
L 2 4
J 1 9
2 R 7 0
2 C 1 2
2 C 0 3
2 R 2 7
5 R 5 0
C 2 2 7
2 C 9 1
2 R 1 7
L 3 9
2 R 8 7
2 C 5 2
2 C 7 0
2 R 0 7
2 C 6 2
2 C 2 1
2 R 4 6
2 C 4 2 2 R 7 7 2 C 3 1
2 C 3 3 2 R 5 7
L 8 3
2 R 4 7
2 C 5 1
2 C 3 2
2 C 0 1
J12
2 R
2 C 1 1
Mdat 1
2 VSTB
VBSY
2 C 3 7
Mck
+5
GND
GND 7
8 VOIC
L 4 4
D 3 5
C 2 4 2
J 1 6
2 R 9 7
2 R 1 8
R 2 8 0
2 C 1 4 J 1 5
F 1
C 3 6 5
R L 1
2 C 0 0
D 9 5
L 1 5
R 4 4 7
1 C 9 4 2 R 0 1
1 C 1 5
4 R 7 4
Q 9 6
2 R 2 1
4 R 6 4
1 C 5 5
C I 2 1
4 R 8 4
2 R 8 1
1 C 8 4
2 R 1 2 2 R 5 1
2 R 6 2
2 R 5 2
2 R 6 6 2 C 7 1 Q 0 3
3 C 2 2
1 R 6 5
1 C 0 4
3 R 3 8
1 R 7 5
1 C 7 1
1 C 9 3
2 C 3 0
1 C 5 1
V O I C E
2 R 0 5 Q 3 6
Q 7 4
3 R 1 8 Q 8 1
B E E P
3 R 6 9 2 R 7 4
3 R 3 0
2 R 3 6 1 C 3 1
3 R 7 9
3 R 2 0 3 R 8 9
1 R 3 5
3 R 2 8 3 R 0 8
2 R 8 9
2 C 2 7
3 R 5 9
1 C 7 0
C I 2 3
2 R 7 9
3 R 7 0 1 R 1 5
4 R 6 1
3 R 0 7
4 R 4 2
1 C 4 9
0 6
3 R 1 0
R
3 R 5 0
J 2 1 L 2 6
3 R 4 0
J 1 2
1 R 0 9
2 C 9 7
U T - 1 0 2
3 C 7 7
L 2 5
L 8 4
2 C 8 4 2 C 4 5
2 C 9 4 D 6 6
2 R 9 8
2 C 3 5
2 C 4 6
D 0 4
D 9 3
2 C 3 6
2 C 0 5
L 5 4
M P 1 0
3 C 9 6 3 C 9 5
3 C 8 5 3 C 7 5
3 C 0 6
1 C 0 8 1 C 1 6
J 5
5 J
7 J
9 - 3
1 C 4 3
D 8 1
3 C 9 3
D 7 1
1 C 5 3 3 R 4 9
J 3 2
A G C
1 R 6 8
1 R 9 9 4 R 6 0 D 4 5
D 3 2
2 C 4 8 5 R 9 0 C 8 2
3 R 1 6
C P 4
4 R 0 8 3 C 7 6
3 R 2 6
1 R 3 6 C 4 P
I 8 C
F 8 I F 7 I 7 Q
1 C 8 5
2 R 4 3
R 2 6
L 7 2
1 C 3 2
C I 3 1
I 4 C
F 6 I F 5 I D 8 2 R 2 3 3
5 R 7 0 C 8 9 1 R 3 7
Q 0 7
C 5 P
F I 4
C P
1 R 9 3
C P 3
1 3 9
L 2 5
M P 1
D 3 6
O P T I O N C W - N
B 6 5 5 7 B
6 C 7 R
7 C
M P 1 8
9 C
5 R
5 C
3 C 9 0
C 0 1
4 C
4 L
5 Q
R 5 0 4
C 6 2
R 6 2
5 R 4 0
2 L
R 6 0 B L A C K
L 7 L 8
C 1 P
C P 1
C 4 3 L 4 5
L 1 0 L 9
R 0 4 C 0 4
R 1 4
3 C 6 2 J 1
C 3 3
C 3 7
F 1 I
C 1 3
5 R 7 2
R 3 3
F 2 I
5 C 6 2
5 5 C 5 2 5 R 9 2
C 1 4
F I 3 B
L 1 7
R 3 4
L
1 R 6 0
C 2 7
Q 2 1
C 3 5
C 4 8 Q 8 5 R 5 9
C 3 8 R 1 9
5 R 0 4
5 R 3 3
L 3 2
1 R 7 0 R 5 8
5 D
C 2 8
3 R 6 7
R E D C 6 5 8 Q
R 8 7 3 R 5 7
L 3 3
L 4 3
3 C 3 7 3 C 2 7
1 C 9 8
3 C 4 7
Q 3 4 Q 1 4 Q 6 5
Q 2 3 Q 5 4
1 C 5 6
J 9
Q 3 3 Q 4 4 Q 2 4 Q 7 3 Q 0 4 L 2 3
1 C 0 7
Q 4 3
3 C 2 6 3 C 1 7 3 C 0 7
3 C 1 6
J 8
J 6
6 J 8 J
J 2 3
2 C 7 6 2 C 6 6
L 1 4 2 C 8 6 2 C 9 6 4 R 4 9
5 R 6 1
2 R 4 9
5 R 8 1
3 R 8 5
3 R 2 5
2 C 5 6
D 3 4
1 C 3 9 4 R 0 7
4 R 1 7
4 R 9 6
4 R 8 6
F I 3 A
1 8
C I 3 3
5 R 0 2
C 2 6
3 R 9 4
C 6 6
3 X D 4 6
3 R 0 5
3 C 9 1
D 9 2
D 4 2
M P 2
3 R 4 4 2 C 4 9
3 R 8 4 2 C 6 9
L 2 1
3 R 6 5 3 C 0 0
3 R 5 5 2 C 8 9
3 R 4 5 2 C 9 9
3 R 5 4 2 C 2 9
2 R 0 4 3 R 6 4 2 C 3 9
J10
3 R 6 3 D 6 4
3 C 6 0
3 R 5 3
2 C 0 9 GND 7
Q 7 5
MTXD
3 C 5 0 MRXD
C I 7 3
GND
GND
L+5
1 C 1 9
13.8 1
L 7 3
3 R 9 5 3 C 8 0