Panasonic SC-AK320 Schematic Diagram page 6

SCHEMATIC DIAGRAM - 6
: +B SIGNAL LINE
MAIN CIRCUIT
Q204,Q404
KTC3875GRTA
HPF FREQ AMP SWITCH
C234 C434
6800P 6800P
<8.69V>
((8.64V))
<2.06V>
((2.04V))
Q204
C235
<1.42V>
6800P
((1.39V))
R238
4.7K
R241 R240
10K 12K
<8.69V>
((8.75V))
Q404
<2V>
C435
<1.37V> ((2.02V))
6800P
((1.38V))
R438
R441
4.7K
10K
R440
12K
C436 50V1
C236 50V1
C440 50V0.22
C240
50V0.22
: -B SIGNAL LINE
R242
15K
<8.69V>
((8.64V)) <2.06V>
((2.04V))
Q205
R243
<1.42V>
15K
((1.39V))
C237
R245
4700P
10K
C238 R252
1800P 220K
<8.69V>
R442
((8.64V))
<2.06V> 15K
((2.04V))
Q405
R443
<1.42V>
15K
((1.39V))
C437
4700P
R445
10K
Q205,Q405
C438 R452
KTC3875GRTA
1800P 220K
LPF FREQ AMP SWITCH
HI_L
R466 680
HI_R
680
R266
LO_L
R462 330
LO_R
R262
330
: MAIN SIGNAL LINE
-9V
+9V
CD7.5V
R340
220
+9V
-9V
C311
16V33
/CD
8V
CD3.3V
SW5V
LED9V
MO10V
+15V
D301
1SS355TE17
DCDET
MUTEH
D308
RL1N4003N02
C333
1000P
D302 D303 D304
DAP202KT146 DAP202KT146 DAP202KT146
1
PGND
2
DGND
3
+9V
4
-9V
TO
5
UP_GND
POWER
6
CIRCUIT
/CD
(CN501) ON
7
8V
SCHEMATIC
8 DIAGRAM-12
CD3.3V
9
SW5V
10
FAN
11
LED9V
12
MO10V
CN301
1
T.GND
2
+15V
3
HI_L/F_L
4
HI_R/F_R
TO
5
A.GND
POWER
6 CIRCUIT
LO_R/S_R
(CN500) ON
7
LO_L/S_L SCHEMATIC
DIAGRAM-12
8
CENTER
9
SWOOFER
10
DCDET
11
MUTE_H
12
HP_SW
CN300