Panasonic SA-AK78 Service Manual page 30

SA-AK78
SCHEMATIC DIAGRAM-4
C
D
B
IC1101
M51167AFP-TB
P.B.EQ/ REC AMP/
ALC/ TPS AMP
A
E
F
All manuals and user guides at all-guides.com
:NEGATIVE VOLTAGE LINE
:POSITIVE VOLTAGE LINE
C1133
50V4.7
C1115 R1109
0.033 4.3K
((0V)) ((9.1V)) ((9.7V)) ((0V)) ((1V)) ((4.6V)) ((4.7V)) ((4.9V))
36 35 34 33 32 31
B
Vcc
C
PB
A
A PB
C
B
AGC
OFF
1 2 3 4 5 6
((0V)) ((4.6V)) ((0V)) ((1V)) ((4.6V)) ((4.7V)) ((4.9V)) ((4.9V))
C1116 R1110
0.033 4.3K
C1134
50V4.7
:TAPE PLAYBACK SIGNAL LINE
: RECORDING SIGNAL LINE
14.8V
R1121
33K
C A
C1129 C1131
820P 820P
R1115
390K
C1127 R1117
0.01 270K
C1125
0.047
((4.7V)) ((5V)) ((4.8V)) ((0V)) ((4.7V)) ((0V))
30 29 28 27 26 25 24
REC
PRE
ALC
PRE
REC
7 8 9 10 11 12 13
((4.7V)) ((5V)) ((4.8V)) ((0V))
C1126
0.047
C1120 C1128 R1118
50V4.7 0.01 270K
R1116
390K
C1130 C1132
820P 820P
D B
30
Q1107
DTC144TKA146
P.B EQ/ REC EQ
(CrO / H.SPEED)
2
((4.8V)):CrO
2
((0V))
((0V))
C1135 C1146
1000P 16V10
R1146
10K
C1139
50V2.2
4.3V
((9.6V))
23 22 21 20 19
GND
B A
C
SW
TPS
R/ P
14 15 16 17 18
((0V)) ((0V)) ((4.2V)) ((5V))
4.9V
Q1108
DTC144TKA146
P.B EQ/ REC EQ
(CrO / H.SPEED)
2
R1122
33K
((4.8V)):CrO
2
((0V))
((0V))
A
B
C
D
E