Panasonic SA-AK88 Service Manual page 21

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SCHEMATIC DIAGRAM-7
Q1151,1152
DTC144TKA146
SWITCHING(PLAY:ON)
A
0.1V
((3.8V))
0.1V
((3.8V))
B
C
D
R1220
4.7K
R1145
10K
4.8V
0.1V
0.6V
0V
0.5V
0V
CP1102
1
2
1
2
CS971
IC971
0N2180RLC1
PHOTO INTERRUPTER
MECHANISM (DECK2) CIRCUIT
:POSITIVE VOLTAGE LINE
A
((0V))
Q1151
Q1152
((0V))
B
R1161
4.7K
R1162
4.7K
A
B C
D
Q1120,1121
2SC2412KT96R
INTERFACE
Q1121
((4.8V)) ((4.8V))
((0V))
Q1120
((0V))
3
4 5 6 7
8
9
3
4 5 6 7
8
9
Z971
1
2
4.7K
S975
(F.REC.INH.)
3
4.7K
S971
(MODE)
4
4.7K
S974
4
2
(R.REC.INH.)
5
4.7K
S972
(HALF)
6
3
1
7
:TAPE PLAYBACK SIGNAL LINE
: TAPE RECORDING SIGNAL LINE
14.8V
R1151
1M
((8.8V))
((2.6V))
Q1153
((2.1V))
Q1153,1154
2SC2412KT96R
MUTING
((2.1V))
((2.6V))
Q1154
((8.8V))
R1152
1M
0.7V
((0V))
((0V))
Q1115
0.7V
((0V))
Q1116
((0V))
Q1115,1116
2SD2114K1V
MUTING
E
F
G
Q1118,1119
2SC2412KT96R
INTERFACE
Q1119
((0V))
((0V))
((0V))
Q1118
((0V))
CP1101
1
2
3
4 5 6 7
1
2
3
4 5 6 7
CS951
50K
50K
50K
50K
50K
MECHANISM (DECK1) CIRCUIT
C1165
16V10
C
C1166
16V10
D
R1186
1K
H
8
9
8
9
R953
39K
IC951
0N2180RLC1
PHOTO INTERRUPTER
4
2
3
1

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