Icom Ic-2820H Service Manual page 42

• HM-133 (BOTTOM VIEW)
[PTT]
C 4 1 R 2 1 R 1 1
7 R
C 7 2
9 R
I 3 C R 9 1
0 1 R
R 7 2 R 1 4
D 2 1
4 D
R 3 4 C 3 1
R 9 4
R 1 5
R 0 5
3 D
R 4 4
6 D
R 2 2
R 8 4
1 C R 7 4 D 0 1 9 C
7 D
9 D
R 6 4
C 0 1
D 1 1
4 R 3 R 2 R
R 8 3
R 4 1 2 C
R 3 1
C 1 3
C 6 2
R 6 1
R 5 1
MIC
MC1
MICE
• VR1 UNIT
(BOTTOM VIEW)
• CONTROL UNIT (BOTTOM VIEW)
5
GND
RVOL
+3.2V
RSQL
1
+3.2V
J3 (CONTROL UNIT)
J4 (CONTROL UNIT)
5
GND
LVOL
+3.2V
LSQL
1 +3.2V
• VR2 UNIT
(BOTTOM VIEW)
J5
HV 1
GND
RDATA
TDATA 4
• MAIN UNIT (BOTTOM VIEW)
V 1 5 5 V 1 5 0 V 1 4 5 V 1 4 0 V 1 3 5 V 1 3
J2
8V 1
2
MICU/D
EXTMIC
R 2 4 1
PTT
MICE
MIC
GND 7
8 MICIN
3 C 6 4
1 L 4 0
C 2 3 1
D 2 5
2 C 1 8
D 1 6 2 C 3 7
2 C 4 2
L 0 8
2 C 6 8
L 1 6
B6646A 3 C 8 0 3 C 3 0 2 C 6 9 D 2 6
L 0 7
L 6 9
3 C 0 3
3 C 6 2
L 8 8
3 C 0 2
3 C 8 1 D 5 7
2 R 0 1
2 R 0 2
2 C 2 6
L 9 8 C 2 6 3
R 2 0 9
D 7 4
C 1 8 6
D 9 3
C 2 1 2
C 1 6 4
1 C 2 6
2 C 7 2
1 R 8 8
C 2 4 0 C 2 2 0
C 5 9 8
R 4 7 7
0 V 1 2 5 V 1 2 0 V 1 1 5 V 1 1 0 V 1 0 5 V 1 0 0 V 9 5 V 9 0 V 8 5 V
R 6 1 3 C 1 9 0 R 5 1 7
C 2 1 0 R 1 2 6 R 1 5 2
C 2 1 6 C 2 9 0 C 8 1 3
1 C 6 6
R 1 8 4
R 1 1 1
C 1 5 0
C 1 7 6 Q 1 3 R 1 0 4
R 1 6 6
I 4 C
C 1 4 3 C 1 2 5
1 C 3 7
R 1 3 3
C 1 2 4
R 2 0 5 D 1 3
Q 6 3
2 C 2 8
C 2 3 0 C 2 4 1
R 1 9 6
1 R 2 5
R 1 9 4 2 R 1 1
2 R 0 1 R 1 2 9
1 R 9 7
C 1 5 6
1 C 5 5
R 1 1 7
C 1 4 1
1 D 3 1 1 D 2 1
R 1 4 1
1 C 3 2
C 5
R 4 1 0
Q
7 Q
L 6 4
5 Q
6 Q 3 Q
Q 0 1
C 6 0 2 C 1
6 C 3 1
4 R 5 8
C 3
Q 4 8
1 Q
R 5 0 0 Q 2 4
R 5 R 4
C 3 8 6
Q 3 8 C 3 7 3 R 2 8 1 R 2 8 6
C 3 7 9
5 C 6 8 8 R 6 4
R 2 7 5 C 3 8 3
R 2 6 9
C 5 3 7
C 3 6 7
C 3 4 5
C 3 6 8
C 3 1 5
R 5 1 0
C 9 1 7
R 5 1 1
R 5 1 2
R 6 2 3
C 6 7 3
C I 6 3
C 5 5 8
1 D 2 6
7 C 3 0 R 1 8 5
C 5 9 4
1 D 1 6 E P 9 1
R 4 8 1
4 X
I C 3 8
8 0 V 7 5 V 7 0 V 6 5 V 6 0 V 5 5 V 5 0 V 4 5 V 4 0 V 3 5
F I 4
F I 3
R 3 6 6
X 3 C 8 9 7
C 4 5 4
C 4 5 0
C 4 6 3
R 3 9 5
R 3 8 9 R 3 7 5 C 4 6 0 R 5 3 1
R 5 3 3
C 4 7 8
C 4 8 6
C I 6 1
C 5 9 1
R 4 2 9
3 C 4 9
R 2 9 8
R 4 3 0
C 5 1 3
Q 5 7
C 3 8 5 R 2 9 2
R 4 3 4
C 9 2 4
C 3 9 6
R 2 3 0 C 4 1 1
R 8 4 5
C 3 9 7 4 C 0 4
R 4 2 5 C 5 4 0
1 Q 0 2
R 3 1 8
1 Q 2 2
R 2 9
C 1 2 2
R 8 8
4 C 4 7 3 R 8 6
R 3 7 0
Q 8 6
L 9 2
R 9 1 C 9 3
Q 4 6
R 7 7 R 3 7 7
Q 6 2
C 7 0
R 6 3 R 4 7
C 6 0 R
C 8 6
C 4 1 7
X 2
3 R 1 9
R 3 1 1
C 4 0 7
C 4 1 6 R 3 1 5 R 3 0 8 C 4 0 4 4 C 2 6 C 4 2 3
R 3 0 1
C 4 3 3
4 C 0 0
C I 3 1
C 4 6 7
C 4 4 5 R 3 8 0
R 3 7 9
Q 6 6
C 7 4 0 R 6 8 0 C 7 9 4
9 C 2 5 R 8 2 4
M 7 P C 9 2 0
C 7 5 1
C 7 4 2 1 Q 9 1
1 L 2 4
C 7 4 4
R 4 1 6 C 4 9 7
R 6 8 4
R 6 7 7 C 7 2 6
C 1 2 9
1 R 0 0
C 7 9
R 5 9 R 2 8
C 8 9
C 8 3
R 3 3 9
R 9 7 R 8 9 1 C 0 9 4 C 9 3
C 4 8
7 2 Q 5 2 R 2 2
R 6 6
C 3 1
R 5 6 C 5 4
C 4 3
C 5 6 R 3 3
C 7 3 2
R 4 6 L 1 1
C 9 5 R 3 7
R 7 8 2
R 8 6 8
C
C 6 6 8
C 6 7 0
C I 6 5
9 C 0 1 R 8 2 0 C 9 0 2 6 J
R 5 3 9
R 5 4 0
E P 2 0
6 X
C 9 8 9
R 8 3 0 R 0 5 8
8 - 2
V 3 0 V 2 5 V 2 0 V 1 5 V 1 0 V 5 V 0
R 5 7 1
R 5 7 5
C I 9 2
R 4 8 4
6 C 6 5
C I 2 5
C 6 4 8
R 8 0 2 R 5 7 7
6 C 8 7
0 8 9
C I 3 6
R 8 0 7
8 C 9 7
R 5 9 4
C 9 2 1
R 0 8 6
R 8 0 5
6 C 3 6
R 6 1 6 R 5 9 8 R 6 1 4
C 0 7 1
7 C 5 0
Q 5 9 C I 5 3
R 6 2 4
I 9 C
R 7 8 6
6 C 7 9
3 R 2 9
R 7 8 7
R 7 8 3
C I 7 3
6 6 4
J 3
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