Panasonic SA-VK61DGS Service Manual page 90

SA-VK61DGS
SCHEMATIC DIAGRAM - 22
MAIN CIRCUIT
R265 3.3K
A
Q308
3 2 1
R443
R243
56K
56K
4 5 6
B
C242
R245
R465
50V4.7
2.7K
3.3K
C
W15
0
D
C376
C459
0.01
25V330
C442
R445
50V4.7
2.7K
E
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: -B SIGNAL LINE
: +B SIGNAL LINE
Q308
B1GFGCAA0001
MUTING CONTROL
R248
27K
C247
C246 R394
16V47
33P 0
C245
100P
W26
5 6 7 8
0
C377
0.01
W22
0
IC308
C0AABB000117
OP-AMP
4 3 2 1
C446
33P
C445
100P
C447
16V47
R448
27K
: MAIN SIGNAL LINE
R249 R252 W25 R253
82 82 0 4.7K
R267
1K
R250 R251
82 82
6 1
C248
1000P
R467
1K
5 2
C448
1000P
4 3
Q312
R453
4.7K
Q312
B1GFGCAA0001
MUTING CONTROL
R450 R452
82 82
R449 R451
82 82
90
-9V
Q314
R361 R338
56K 0
MUTE_A
R360
56K
C362
50V22
Q314, 317
B1GDCFGA0014
MUTING SWITCH
Q317
R367 R340
56K 0
HP_MUTE
R366
56K
C365
50V4.7
R254 10 HPR
R454 10 HPL
+9V