Panasonic SC-AK48 Service Manual page 45

SCHEMATIC DIAGRAM-6
Z1101
1
A
B
C
D
E
F
5V
IC1105
BU2090AF-E2
SYSTEM CONTROL
Q1218
DTA114EKA146
SWITCHING
(REC:ON)
D
((0V))
4.8V
C
((5V))
10K
4.7K ((0V))
B
((4.9V))
Q1220
DTA143XKA146
MOTOR DRIVE
A
:POSITIVE VOLTAGE LINE
14.6V
25K 25K 25K
2 3 4 5 6 7
R1233
2.2K
5.1V
((0.2V))
8 7 6 5
9 10 11 12
((0V)) ((4.8V)) ((0.5V))
R1230
4.7V 0.2V 0V
4.7K
((5V))
10K
((4.8V))
4.7K
0.2V
:RECORDING SIGNAL LINE
A
B
C
D
E
F
R1216 2.2K
R1215 2.2K
((4.7V)) ((0V)) ((0V))
4 3 2 1
13 14 15 16
((0V)) ((0V)) ((4.6V)) ((5V))
4.5V
A B
45
:TAPE PLAYBACK SIGNAL LINE
H1100
M.GND
1
2 MO.GND
+B(5)
10V 3
D.GND
4
5 +B(3)
R1144 10K
Rch IN
6
R1143 10K
7
Lch IN
8
A.GND
9
Rch OUT
10
Lch OUT
TP10 TP9
CN1201
VREF(+)
8
5V
ADIN7
7
ADIN6
6
TPS
5
4 D.GND
MKCLK
3
2
MKDATA
1
+B(6)
SA-AK48
E
To MAIN
(DSC)
CIRCUIT
(CN304) on
SCHEMATIC
DIAGRAM-9
K
To FL
CIRCUIT
(H600) on
SCHEMATIC
DIAGRAM-13