Panasonic SC-AK48, Service Manual

Page: 48 / 104

G
F
H
R358
47K
R213 27K
R413 27K
1
2
4
3
A C
Ca E
S5
(BOTTOM)
D1
GP1S94
(POSITION SENSOR)
1
2
4
3
BOTTOM SW
CIRCUIT
1
2
3
1
2
3
S4
(CLAMP)
W1
W2
A
B
C
D
CLAMP SW
CIRCUIT
MOTOR CIRCUIT
1
20 18 19 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2
CN303
A.GND
D.GND
+B(2)
TX +B(1) P
.GND
+B(4)
MIC
M.GND
CHG
AD1
SD
CHG
AD2
SER5 SER3 /CD MUTEA
P
.CONT
L
VL1
CD
Lch
CD
Rch
2
1
3
4
5
6
7
8
9
10
CN304
M.GND
MO.GND
+B(5)
D.GND
+B(3)
REC Rch
REC Lch
A.GND
PB Rch
PB Lch
1
2
3
4
5
6
7
9
10
11
DO
CL
DI
CE
SD
ST EYE
+B(3)
+B(4)
Rch IN
Lch IN
GND
B
8
R ch
L ch
AUX
JK305
O P Q R S T U
R402
3.9K
R202
3.9K
R401
10K
R201
10K
C402
100P
C202
100P
A
B
C
D
R411
2.2K
R211
2.2K
R412
4.7K
R212
4.7K
C300
0.01
E
H
F
G
R207 6.8K
R407 6.8K
I
L
J
K
R408
10K C404 220P C204 220P
R208
10K R415
1K
R215
1K
R454 10K
R300 4.7K
C301 1000P
R210 1K
R410 1K
R409
47K
R209
47K
M
N
Q351
KRC102STA
PLUNGER DRIVE
Q350
2SB621ARSTA
PLUNGER DRIVE
R349
10K
R350
1K
D316
RL1N4003S-P
C236
0.47
R346 22K
R345 220
14
2
1
3
4
5
6
7
8
9
10
11
12
13
CN1
PLUNGER
S2
(TRAY POSITION2 DET.)
S1
(TRAY POSITION1 DET.)
S3
(OPEN DET.)
IC1
TA7291P
MOTOR DRIVE
A
B
C
D
14
2
1
3
4
5
6
7
8
9
10
11
12
13
8.7V
M
1 2 3 4 5 6 7 8 9 10
R1
1K
C1
16V100
D2
MTZJ4R7BT
A
Q1
RVTDTC143EST
MOTOR DRIVE
RM1
(LOADING
MOTOR)
C2
0.01
4.7K
4.7K
CN309
R347 12K
A
B
C
R354 12K
R355 22K
D
E
F
D312
RL1N4003S-P
R353
10K
R359
47K
R351
10K
SCHEMATIC DIAGRAM- 9
To FL CIRCUIT (CP605)
on SCHEMATIC DIAGURAM-15
K
To MECHANISM
CONTROL
CIRCUIT(H1100)
on SCHEMATIC
DIAGRAM-6
B
To MAIN(TUNER)
CIRCUIT ( )
on SCHEMATIC
DIAGRAM-8
E
A
E
MAIN(DSC) CIRCUIT
7.5V
3.3V
10V
14.6V
7.7V
10V 0V
10V
0V
10V
:POSITIVE VOLTAGE LINE
:RECORDING SIGNAL LINE
:TAPE PLAYBACK SIGNAL LINE
:FM SIGNAL LINE
:CD PLAYBACK SIGNAL LINE
9V
0.6V 7.8V 0.6V
8.4V 8.4V
4.5V
0V
:MIC SIGNAL LINE
:AM SIGNAL LINE
SA-AK48
48