Panasonic SAHT280 - RECEIVER, Service Manual

Page: 68 / 96

To MAIN
CIRCUIT(CP401)
on SCHEMATIC
DIAGRAM-12
To MAIN
CIRCUIT(CP402)
on SCHEMATIC
DIAGRAM-12
To MAIN
CIRCUIT(CP403)
on SCHEMATIC
DIAGRAM-12
A
B
IC402
NJM4580DD
BUFFER AMP
IC351
NJM2279D
SIGNAL SELECTOR
(VIDEO)
IC401
TC9163AN
SIGNAL SELECTOR
(AUDIO)
G I B D H L J F B D C
F H A C G K I E A B
2 1 3
14 13 12 11 10 9 8 7 6 5 4 3 2
15 16 17 18 19 20 21 22 23 24 25 26 27 28
1
CLK DATA
GND STB
8 7 6 4 5
Vss
V
DD
2 1 8 7 6 4 5 3
A E
5 6 7 8
1 2 3 4
A
B
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7 6 5 4 3 2 1
8 9 10 11 12 13 14
75
DRIVER
75
DRIVER
6dB
AMP
6dB
AMP
B
A
F
G
H
I
E
D
C
A
B
P
N
Q
O
M
R
G
CN401
CN402
CN403
DVD L
DVD R
A.GND
A.GND
SW IN
SOUT L
SOUT R
+B(1)
-B(1)
CK 63
DT 63
ST 63
V SELA
V SELB
PH L
PH R
A.GND
TU L IN
TU R IN
V.GND
V.GND
G
Q351
2SD592AQSTA
REGULATOR
Q352
2SB621AQSTA
REGULATOR
R426
10K
R425
10K
R427
10K C405 100P
R368 1K
D354
RVD1SS133TA
D353
RVD1SS133TA
R367 1K
C354
0.1
C309
6.3V100
D351
MTZJ5R6BT
A
C351
6.3V100
C357
0.01 R369
1.8K
R371
22
C355
0.1
C308
6.3V100
D352
MTZJ5R6BT
A
C352
6.3V100
C358
0.01
R370
1.8K
R372
22
C415
0.01
C409
16V22
R424
1K
C404
0.01
C402
50V4.7
C403
0.01
C401
50V4.7
R423
1K
C410
16V22
C416
0.01
C417
16V10
R417
47K
R421 100K C41
1
100P
R415
1K
R416
1K
C412 100P
R422 100K R418
47K
C418
16V10
SCHEMATIC DIAGRAM-2
G
:NEGATIVE VOLTAGE LINE :POSITIVE VOLTAGE LINE :FM/ AM SIGNAL LINE :SUB WOOFER SIGNAL LINE
14.4V
14.4V
-16.2V
-16.2V
-15.7V -5V
-5.6V
13.7V
5.6V
5V
5V 0V 0V 4.2V 0V -5V
0V 4.7V 0V 0V 0V
-16.2V 0V 0V 0V
0V 0V 0V 14.4V
-16.2V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V
0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 14.1V