Panasonic SC-AK48 Service Manual page 48

SA-AK48
SCHEMATIC DIAGRAM- 9
AUX
B
To MECHANISM
CONTROL
CIRCUIT(H1100)
on SCHEMATIC
DIAGRAM-6
E
To MAIN(TUNER)
CIRCUIT ( )
A
on SCHEMATIC
DIAGRAM-8
CLAMP SW
F
CIRCUIT
S4
(CLAMP)
3
2
1
BOTTOM SW
G
CIRCUIT
S5
(BOTTOM)
4
3
2
C A
1
E Ca
D1
GP1S94
(POSITION SENSOR)
E
MAIN(DSC) CIRCUIT
R401
JK305
10K
L ch
R201
10K
R ch
CN304
M.GND
1
MO.GND 2
+B(5)
3
D.GND
4
+B(3)
5
REC Rch
6
REC Lch
7
A.GND
8
R207 6.8K
PB Rch 9
R407 6.8K
PB Lch
10
B
R454 10K
DO
1
CL 2
DI
3
R300 4.7K
CE
4
SD 5
C301 1000P
ST EYE
6
+B(3)
7
+B(4)
8
R210 1K
Rch IN
9
R410 1K
Lch IN
10
GND
11
H
MOTOR CIRCUIT
IC1
TA7291P
MOTOR DRIVE
1 2 3 4
0.6V 7.8V
W2
3 D
2
1
4.5V
4.7K
Q1
RVTDTC143EST
W1
4 A MOTOR DRIVE
B
3
C
2
1
:POSITIVE VOLTAGE LINE
:RECORDING SIGNAL LINE
:CD PLAYBACK SIGNAL LINE
A
B
C
D
R213 27K
E
R413 27K
F
G
H
I
J
K
L
M
N
5 6 7 8 9 10
0.6V
8.4V 8.4V
C2
0.01
M
PLUNGER
R1
RM1
1K
(LOADING
MOTOR)
(TRAY POSITION2 DET.)
(TRAY POSITION1 DET.)
0V
(OPEN DET.)
4.7K
8.7V
A
B
C
D
48
:TAPE PLAYBACK SIGNAL LINE
:FM SIGNAL LINE
:MIC SIGNAL LINE
To K FL CIRCUIT (CP605)
on SCHEMATIC DIAGURAM-15
1
2 3 4 5 6 7 8 9 10 11 12
CN303
R411
2.2K
R211
2.2K
O
7.5V
3.3V
C300
0.01
CN309
CN1
1 1
S2
2 2
3 3
4 4
S1
5 5
6 6
7 7
S3
8 8
R354
9 9
R355
10 10
11 11
12 12
13 13
14 14
:AM SIGNAL LINE
13 14 15 16 17 18 19 20
P Q R S T U
10V
14.6V
7.7V
Q350
2SB621ARSTA
PLUNGER DRIVE
0V 10V
10V R349
10K
10V
0V
Q351
KRC102STA
PLUNGER DRIVE
R347 12K
R346 22K
R345 220
A
B
C
12K
22K
D
E
F
9V