Panasonic SA-AK500PC Service Manual page 203

SCHEMATIC DIAGRAM - 7
: +B SIGNAL LINE
MAIN CIRCUIT
IC802
TC74HC157AFT
QUAD 2 CHANNEL MULTIPLEXOR
8 7 6 5 4 3 2 1
IC802
9 10 11 12 13 14 15 16
C322
0.1
IC803
2 3 1
C829
IC803
10V100
BA033T
VOLTAGE REGULATOR
: -B SIGNAL LINE
Q319
KTA12710YTA
CD SUPPLY SWITCH
Q319
<7.09V> <7.09V>
((6.97V)) ((6.99V))
<6.33V>
R334
((6.23V))
1K
R331
<0.02V>
0
((0.01V))
<0.01V>
((0.02V))
R335
R332
1K 100
R330
<0.03V>
0
((0.01V))
<0.01V>
((0.01V))
IC804
Q317
SI8050JLF118
VOLTAGE REGULATOR
L805
RLL500050T-Y
1 2
L803 L804
RLQX101M-T
RLL500050T-Y
C830
C831
10V100
10V680
: MAIN SIGNAL LINE
CD7.5V
-9V
+9V
+9V
-9V
/CD
8V
SW5V
LED9V
MO10V
+15V
D301 D302
1SS355TE17 DAP202KT146
DCDET
MUTEH
Q371
2SD592AQRSTA
SUPPLY -7V
Q318
KRA111STA
R333
CD SUPPLY CONTROL
100
Q372,Q374
2SA1037AKSTX
SWITCH
Q318
(FAN ON/OFF)
<0.02V>
((0.01V))
Q373
2SD592AQRSTA
SWITCH
(FAN ON/OFF)
Q316-Q317
KRC102STA
SWITCH
<0.02V>
((0.01V))
IC804
3 4 5
<0.02V>
Q316
((0.01V))
C833
<0.03V>
((0.02V))
0.22
<0.02V>
((0.02V))
Q375
2SC2412KT96R
DC DET SWITCH
D308
RL1N4003N02
C333 1000P
D303 D304
DAP202KT146 DAP202KT146
Q370
2SA1037AKSTX
R370
SWITCH
100K
R398
10K
C370
<-0.22V>
0.01
((0.23V))
C371
0.1
Q370
R381
<-8.77V> <0V>
2.2M
((-8.77V)) ((0V))
R371
4.7K
<-8.76V>
((-8.77V))
R372
Q371
4.7K
<-8.77V>
<3.54V>
((-8.77V))
((3.55V))
R373
3.3K
D370 R374
1SS355TE17 100K
C372
D371
16V220
1SS355TE17
<4.48V>
Q372
((4.48V))
C376
0.01
<4.95V>
<0V>
((4.95V))
((3.8V))
R375
<4.94V>
10K
((4.95V)) C377
0.01
Q373
<0V>
((1.6V))
<1.73V>
((3.34V))
D374
RL1N4003N02
R376
22
C373
R377
220K
50V10P
D375 D376
1SS355TE17 1SS355TE17
C378
<0.18V>
((0V))
16V10
R378
100
Q374
R379
<0.35V> <0V>
47K
((0.35V)) ((0V))
C374
D377
16V33
1SS355TE17
R380
10K
R388
<0.35V>
56K
50V100
((0.36V))
<0V>
((0V))
Q375
<5.07V>
((5.03V))
1
PGND
2
DGND
3
+9V
4
-9V
TO
5
UP_GND
POWER
6
CIRCUIT
/CD
(CN501) ON
7
8V
SCHEMATIC
8 DIAGRAM-13
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_L/S_L
(CN500) ON
7
LO_R/S_R SCHEMATIC
8 DIAGRAM-13
CENTER
9
SWOOFER
10
DCDET
11
MUTE_H
12
HP_SW
CN300
C375
R399
10K
1
DCDET
CN305
2