Panasonic SA-PT480PH Service Manual page 129

SCHEMATIC DIAGRAM - 17
I
C
D-AMP CIRCUIT
: +B SIGNAL LINE
J
K5404
0
K
L
M
D5407
B0ACCK000005
C5425 R5436
1 22K
N
Q5413
B1ADBL000010
R5439
DC DETECT
220K
R5438
220K
Q5412
B1ABCF000011
R5437
4.7K DC DETECT
O
P
1 2 3
: AUDIO OUTPUT SIGNAL LINE
IC5400
C0DBEKG00004
VOLTAGE REGULATOR
VC VIN
1 2
C5449
0.1
C5409
16V22
QR5401
B1GBCFNN0038
DC DETECT
D5408
B0ACCK000005
R5446 R5422 D5405
3300 330K
B0ACCK000005
Q5403
R5425
10K
B1GBCFNN0038
FAN LOCK DETECT
C5420
C5437 C5418
16V22 0.1 6.3V220
R5428
Q5405 10K
B1ABCF000011
SWITCH
R5427
100K
C5424
5600P
4 5 6
TO D-AMP
SECTION (1/4)
SPK_GND
GND VOUT ADJ
3 4 5 PVDD
GND
R5406 R5407
100K 5600
L5403
G1C4R7MA0172
R5408
10K
12VSW
Q5400
B1BAAJ000003
CURRENT CONTROL
C5422 C5416
R5420
R5426
16V22 1000P
1.2K
1.8M
C5421
Q5401
0.1
B1ADCE000012
R5421
SWITCH
10
Q5404
B1ABCF000011
D5406
FAN MOTOR CONTROL
B0BC7R5A0268
D5404
R5424
B0ACCK000005
10K
D5403 C5423 R5423 C5417 D5402
B0ACCK000005 1 16V10 B0BC012A0269
10K
7 8 9
129
RL5003* RL5005* RL5004*
C5446
1000P
R5463 R5462 R5461
0 0 0
L5401
CN5400
J0JKB0000003
D
6 +55V
TO
+55V
5
SMPS CIRCUIT
4 PGND
(JW1*)
L5402
3 PGND
IN SCHEMATIC
J0JKB0000003
FAN GND
2
DIAGRAM - 19
1 +18V FAN
CN5401
1 FAN DC OUT
C5419 1
TO FAN
2 FAN GND
3 FAN LOCK
R5434
10K
Q5402
B1ABCF000011
SWITCH
R5435
10K
1/4 2/4
3/4 4/4
SA-PT480PH D-AMP CIRCUIT
10 11 12 13
1
4
3
P1
2
TO D-AMP
SECTION (4/4)
14