Panasonic SA-XH50P Service Manual page 104

43 44 45 46
SCHEMATIC DIAGRAM - 10
B MAIN CIRCUIT
: +B SIGNAL LINE
R427 10
TO MAIN
CIRCUIT (3/8)
C423
0.1
R428 10
R429 100
PWM_CENT+
R440 100
PWM_CENT-
R441
22K
C424
0.1
PWM_SUBW+
R442 100
PWM_SUBW-
R444 10
R443 10
C427 C426 C425
0.1
10 0.1
R445 10
R446 10
C429
0.1
R447 10
OTW
SD
R448 100
PWM_FL+
R449 100
PWM_FL-
R450
22K
C430
0.1
PWM_FR+
VALID R451 100
PWM_FR-
R452 10
R453 10
C433 C432 C431
10 0.1
0.1
GND
R454 10
P1
47 48 49
: -B SIGNAL LINE : MUSIC PORT/AUX/TUNER AUDIO INPUT SIGNAL LINE
IC403
C1AB00003217
DIGITAL AMPLIFIER
C460
0.1
L410
1 GVDD_B GVDD_A 44
G0A100H00018
C464 0.033
2 43
OTW(L) BST_A
3 NC NC 42
C467
4 41
NC PVDD_A
25V330
C461
5 SD(L) PVDD_A 40
0.1
6 PWM_A OUT_A 39
7 RST_AB(L) GND_A 38
C462
8 PWM_B GND_B 37
0.1
9 36
OC_ADJ OUT_B
L417
10 GND PVDD_B 35
G0A100H00018
C470 0.033
11 AGND BST_B 34
C476 0.033
12 33
VREG BST_C
L418
13 M3 PVDD_C 32
G0A100H00018
14 31
M2 OUT_C
C477
15 M1 GND_C 30
0.1
16 PWM_C GND_D 29
17 RST_CD(L) 28
OUT_D
C478 C505
18 PWM_D PVDD_D 27
0.1
25V330
19 NC PVDD_D 26
L419
20 25
NC NC
G0A100H00018
C479 0.033
21 VDD BST_D 24
22 23
GVDD_C GVDD_D
C490
0.1
SPEAKER PROTECT SWITCH
B1ABCF000011
IC405 SPEAKER PROTECT SWITCH
C1AB00003217
DIGITAL AMPLIFIER
C481
0.1
L406
1 GVDD_B GVDD_A 44
G0A100H00018
C492 0.033
2 OTW(L) BST_A 43
3 NC NC 42
4 41
NC PVDD_A
C496
C493
5 SD(L) PVDD_A 40 25V330
0.1
6 39
PWM_A OUT_A
7 RST_AB(L) GND_A 38
C497
8 PWM_B GND_B 37
0.1
9 36
OC_ADJ OUT_B
L407
10 GND PVDD_B 35
G0A100H00018
C498 0.033
11 AGND BST_B 34
C507 0.033
12 33
VREG BST_C
L408
13 M3 PVDD_C 32
G0A100H00018
14 31
M2 OUT_C
C508
15 M1 GND_C 30
0.1
16 PWM_C GND_D 29
RST_CD(L)
17 OUT_D 28
C509
18 PWM_D PVDD_D 27
C519
0.1
19 NC PVDD_D 26 25V330
L409
20 NC NC 25
G0A100H00018
C510 0.033
21 VDD BST_D 24
22 23
GVDD_C GVDD_D
C514
0.1
TO MAIN
CIRCUIT (8/8)
50 51 52
: AUDIO OUTPUT SIGNAL LINE : FM SIGNAL LINE
C804 C472 R500
0.47 0.1
5.6K
C473
0.1
C805 C486
0.47 0.1
R501
5.6K
C487
0.1
R520 R521
100K 100K
SP_PROTCT
Q501
B1ABCF000011
Q500
R522 C548 R523 R524
33K 50V10 100K 100K
C806 C501
0.47 0.1
R502
5.6K
C502
0.1
C807 C522
0.47 0.1
R503
5.6K
C523
0.1
104
53 54 55
C566
1000P
GND
SP_SUB+ C185 1000P
R469
3.3
C447 C166
0.01 1000P
SP_CENT- C446 C165
0.01 1000P
R468
3.3
SP_CENT+
SP_SUB- C184 1000P
SP_CENT+ C183 1000P
R467
3.3
C445 C164
0.01 1000P
C444 C163
0.01 1000P
SP_SUB-
R466
3.3
SP_CENT-
C182 1000P
SP_FR+ C181 1000P
SP_SUB+
R465
3.3
C186 1000P
C443 C162
0.01 1000P
JK401
G1
C442 C161 1 SW+
0.01 1000P
2 SW-
R464 3 C+
3.3
4 C-
FRONT_R+
5
SP_FR-
6 FRONT_R-
SP_FL+
FRONT_L+
7
8 FRONT_L-
9 SR+
R496
3.3
10 SR-
11 SL+
C448 C167
0.01 1000P 12 SL-
G2
C449 C168
0.01 1000P
C192 1000P
R497
3.3
SP_FL- C191 1000P
SP_SR+ C187 1000P
SP_FL-
R498
3.3
SP_FL+
C450 C169
0.01 1000P
C454 C170
0.01 1000P
R499
3.3
SP_SR- C188 1000P
SP_SL+ C189 1000P
SP_FR- R507
3.3
C456 C172
0.01 1000P
SP_FR+
C455 C171
0.01 1000P
R506
3.3
SP_SL- C190 1000P
C567
1000P
K157
0
CHASSIS
1/8 2/8 3/8 4/8
5/8 6/8 7/8 8/8
SA-XH50P/PC MAIN CIRCUIT
56
A
B
C
D
TO SPEAKERS
E
F
G
H