Panasonic SA-HR45E Service Manual page 49

SCHEMATIC DIAGRAM - 7
DIGITAL AMP CIRCUIT
: +B SIGNAL LINE
1
OSC
MODE1
+29V
FL+
-29V
C
FL-
R549 R552
120K 68K
1
OSC
SL C553 0.47
MODE1 C551 R521 5.6K
1000P
C555 R523
WA510 0.47 5.6K
0
+29V
FR+
-29V
SR
FR-
R569 R572
120K 68K
R570
C688
150K
6.3V100
: -B SIGNAL LINE : MAIN SIGNAL LINE
IC551
C1AA00000755
POWER AMP
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
C522
0.015
C509 C513 C515
0.1 0.1 220P
C520
R504
C511
10 220P
0.1
C529
R5700
0.1
4.7K
C524
220P
R514
10
LB502
J0JKB0000020
C544
35V470
C545
LB503 35V470
J0JKB0000020
R515
10
IC552
C1AA00000755
POWER AMP
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
C579 C572
0.1 0.015
C557 C559 C563 C565 C573
330P 0.1 0.1 220P 0.015
C571 C570
R524
C561
220P 220P
10
0.1
R525
10
C574
220P
R534
10 C575
220P
LB504
J0JKB0000020
C594
35V470
C595
LB505 35V470
J0JKB0000020
R535
10
19 20 21 22 23
C512
C508 C506
0.1
0.1 330P
C510
R500 MODE2 PWR_AMP
0.1 R502
5.6K
5.6K
C502 C504
0.47 0.47
+5V
WA500
0
L500
ETQA15B220
C+
WA504
R506
0
22
C530
0.68
WA521 C532
0.1
0
MUTE_ALL
MODE1
R512
MUTE_SC
68K
MODE2
DC_DET
Q592 Q591
B1ABDF000033 B1ABDF000033
DC DETECT SWITCH DC DETECT SWITCH
19 20 21 22 23
C562 C558 C556
0.1 0.1 330P
C560
R520
0.1 MODE2
R522
5.6K
5.6K
C552 C554
0.47 0.47
SR+
W522
WA506
0
0 SL+
WA511
0
SR+
C+
L502
ETQA15B220 R526
22
C580
0.68
C582
0.1
C583
0.1
C581
0.68 SIGNAL
R527
22
SL+
L503
ETQA15B220 R529 R532
120K 68K
FR-
FR+
FL-
FL+
49
Q5006
B1GBCFJJ0040
VOLTAGE REGULATOR
Q5001
R5002 R5003
3.3K 3.3K B1GDCFJJ0037
SWITCH
Q5002
B1GBCFJJ0040
R5004
SWITCH (MODE 1)
3.3K
D5003
B0ACCK000005
WA527
0
R5005
3.3K
WA502
0
Q5003
B1GBCFJJ0040
SWITCH (MODE 2)
C5002 C5001
16V33 16V33
R5512 R5513
47K 47K
C5506 C5507
16V10 16V10
SA-HR45E/EG DIGITAL AMP CIRCUIT
1/2 2/2
SA-HR45E / SA-HR45EG
GND
1
SR+
2
GND
3
SL+
4 TO SURROUND / CENTER
GND
5
SPEAKERS
GND
6
C+
7
GND
8
JK504
FR-
1
FR+
2
FL-
3
TO FRONT SPEAKERS
FL+
4
GND
5
JK503