Power Circuit - Panasonic SA-NS55E Service Manual

SA-NS55E / SA-NS55EG

15.6. POWER CIRCUIT

1 2 3
SCHEMATIC DIAGRAM - 8
A
POWER CIRCUIT
B
R251
6.8K
JW805
R451
6.8K
C
+VCC 12
+VCC 11
MUTE_B 10
9.6V 9
TO CD7.5V 8
MAIN CIRCUIT
IN_L 7
(CN805)
AGND 6
IN SCHEMATIC
IN_R 5
DIAGRAM - 2
PCONT2 4
EARTH_GND 3
OP_LEVEL 2
D
SUB+B_11V 1
E
F
G
H
1 2 3
4 5 6
: + B SIGNAL LINE : MAIN SIGNAL LINE
1 2 3
R250
8.2K
C252
2700P
FP600
5A
C254
R254
R450
820 50V0.22
8.2K
C452
2700P
R454 C454
820 50V0.22
R252 R452
8.2K 8.2K
R380
R253 R453
2R2K
3.9K 3.9K
C253 C453
0.068u 0.068u
2 4
VCC V02
IC600
R583
IC600 C600
C0DAZYY00006
3.3K
16V22
C587
7.5V & 9.6V REGULATOR IC
50V1u
V01 GND CTL
1 3 5
CD7.5V
R585
C601
1K
16V22
4 5 6
7 8 9
IC400
AN17831A
POWER AMPLIFIER IC
4 5 6 7 8 9 10 11 12
C455 C255
100P 100P
C372 W407 C352
2200P 1000P
0
R580 R581
10K 10K
AGND AGND
C586
R586 C370 R381
50V10
10K 16V22 10K
W409
0
R584
56K
Q600 C588
50V1u
B1ABCF000176
OP LEVEL SWITCH
7 8 9
64
10 11 12
L270, L271, L470, L471
G0AR76Y00003
JK600
L270
1 L+
L271
C259 100P
2 L-
L470 SPEAKERS
3 R+
L471
C459 100P
4 R-
C257 C258 C458
C457
ZJ400
0.22u 0.22u 0.22u 0.22u
SNE1004-3
R256 R257 R456 R457
2.2 2.2 2.2 2.2
GND
C781
0.056
10 11 12
13 14
A
B
C
D
E
F
G
SA-NS55E/EG POWER CIRCUIT
H
13 14