Power Circuit - Panasonic SA-AK52 Service Manual

SA-AK52
SCHEMATIC DIAGRAM - 12

POWER CIRCUIT

C500
470P
R502
5.6K
R500
15K
R501
15K
GND1
1
+15V
2
HI_LCH
3
HI_RCH
TO
4
LOW_CH
MAIN
5
GND1
CIRCUIT
6
(CN300) ON S_CH
7
SCHEMATIC
C_CH
8
DIAGRAM-7
CD
9
DCDET
10
PCONT
11
HP_SW
12
CP501
Q501,Q503
KTC3199GRTA
SWITCH
DC DETECT
POWER SUPPLY DOWN
P.GND
1
DGND
2
+9V
3
-9V
TO
4
MAIN
5
GND1
CIRCUIT
6
D500
8V
(CN301) ON
7
SCHEMATIC CD3.3V
8
DIAGRAM-7
SW5V
9
10
LED9V
11
10V
12
CP500
D500-D501
RL1N4003S-P
: +B SIGNAL LINE
IN -Di
SIL SIR GND L IN R IN -VD +VD -CIN +CIN RELAY
SENS
26 25 24 23 22 21 20 19 18 17 16
R511
56K
C511
15P
R512
56K
C502
470P
C512
15P
R513
56K
C513
22P
R514
56K
R503
5.6K Q504
C514
2SD1859QRTV2
22P
REGULATOR
(47.1V)<47.1V>
+48V FOR IC500
47.1V((47.2V))
R504
[47V]
15K
(48.9V)<48.9V>
48.9V((48.9V))
C508
[48.9V]
0.01
(47.6V)<47.7V>
C507 47.8V((47.7V))
[47.6V]
0.01
C515
0.01
Q502
2SB1238QRTV2
R517
4.7K
REGULATOR
-48V FOR IC500
R516
(-49.2V)<-49.1V>
330
-49.1V((-49.1V))[-49.1V]
(-47.4V)
<-47.3V>
-47.3V
((-47.3V))
(-47.7V) C509
R515
[-47.3V] <-47.8V>
0.01 4.7K D507
-47.9V
((-47.9V))
C505
[-47.9V]
0.01
D508
R510
330
D503
Q501
(5.14V)
<5.16V>
(5.16V)<5.18V>
D504
5.16V
5.19V((5.17V))
((5.14V))
[5.19V]
[5.16V]
(0V)<0V>
0V((0V)) Q503
[0V]
(-0.01V)
<-0.01V>
-0.01V
(-0.06V)<-0.06V> ((-0.01V))
-0.06V((-0.07V))
[-0.01V]
[-0.06V]
R532
D505
150
R521
D506
150
1 2 3
4 5 6
D501
C517
50V47
C536
0.18
Q506-Q507
KTC3199GRTA
SHORT CIRCUIT PROTECTION
: -B SIGNAL LINE
IC500
IH
+Di DISP -VCC +VCC
DET HMUT +COUT -COUT GND AC IN R OUT LOW L OUT
SENS LOW
15 14 13 12 11 10
9 8 7 6 5
R523
120K
R518
C516
0.047 470K
R524
150K
R522
220K
R525
180K
R526
C519
R528
10K
16V10
22K
R519
4.7
R520
4.7
(0.2V)<0.2V>
0.2V((0.2V))
[0.2V]
(-0.01V)
<-0.01V>
(-0.01V)
-0.01V
<-0.01V>
((-0.01V))
-0.01V
[-0.01V]
((-0.01V))
[-0.01V] R527
100K
Q505
2SD2144STA
POWER CONTROL
SWITCH
HP : ON/OFF
D503,D504,D507,D508
MTZJ24DTA IC501
D505-D506 STK470-070
RVD1SS133TA
POWER IC
IC501
8 9 10 11 12 13 14 15 16 17
7
R538
2.2
R539
2.2
(5V)<5V>
5V((5V))
(5V)<5V>
[5V]
5V((5V))
[5V]
Q506
R544
D519 D520
47K
(0V)<0V>
0V((0V))
[0V]
D519-D522
(5V)<5V>
5V((5V)) MTZJ20BTA
(0V)<0V>
[5V]
0V((0V))
[0V]
Q507
(-5V)<-5V>
-5V((-5V))
[-5V]
R545
D521 D522
47K
R540
4000
C537
50V100 R543
1000
46
: MAIN SIGNAL LINE
IC500
RSN309W44B
POWER IC
-VCC +VCC
SOR SOL
Hi Hi
4 3 2 1
C524 C528
0.047
0.047
R536
R534
10 10
C530
0.047
C526
0.047
R535 R537
10 10
18
C534
35V3300P
C521
0.01
S1
S1
S2
S2
GND
C522
0.01
GND
S2'
S2'
S1'
S1'
SUB+B
VP (AC)
SUB+B_GND
JK500
4
+
Rch
2
-
SPEAKER
3 6 Ohm
+
Low Channel
1
Lch
-
JK501
Lch
1
2 Rch SPEAKER
6 Ohm
3
High Channel
4
E500
H500/W500
1
2
3
4
TO
5
TRANS
6
CIRCUIT
7
(CN501) ON
8
SCHEMATIC
9
DIAGRAM-13
10
11
12
13