Panasonic SB-WA880 Service Manual page 38

Active subwoofer system
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SCHEMATIC DIAGRAM-4
AMPILIFIER CIRCUIT
22
21
20
19
C611
1000P
R626
10K
C612
1000P
R625
115K
Q601
B1BACG000048
VOLTAGE REGULATOR
R615
C613
47K
Q603
0.01
B1BAAJ000003
R616
VOLTAGE REGULATOR
4.7K
R617
8.2K
B0BA01200008
R618
47K
B0BA01200008
B0BA02300017
C614
0.01
Q602
Q602
B1BCCG000023
VOLTAGE REGULATOR
: -B SIGNAL LINE
: +B SIGNAL LINE
IC601
18
17
16
15
14
13
12
11
10
R619
56K
C607 18P
R620
56K
C608 18P
R633
820K
C610 0.01
C609 0.01
C619
0.047
R622
10K
R628
150K
R627
120K
R621
27K
C604
100V3300
100V4700
R611
R613
4.7
2.7K
D605
D606
D602
D607
4
R614
2.7K
R612
4.7
R634
D608
47K
D609
D609,D611
D608,D610
R635
B0BA01900005
B0BA01400009
47K
D610
D611
: MAIN SIGNAL LINE
RSN312H24A-P
9
8
7
6
5
4
3
2
1
C621
0.1
C602
C603
100V4700
C601
100V3300
D601
B0FBAM000009
4
3
2
C605
0.1
B0FBAM000009
1
3
2
C606
0.1
IC601
POWER HIC
L601
R629
L601,L602
10
G0AR76Y00001
L602
R630
C615
10
0.047
R631
10
C617 0.047
C616
0.047
R632
10
C618
0.047
C620
0.1
FAN_DRV
FL
INGND
FR
AC IN
HMUTE
DCDET
GND
1
+VCCHI
+VCCLO
GND
-VCCLO
-VCCHI
CN604
1
TO
2
SUBWOOFER
3
SPEAKER UNIT
4
H603
/W603
8
7
TO
6
POWER CIRCUIT
5
(CN603) ON
4
SCHEMATIC
3
DIAGRAM-2
2
1
H602
/W602
1
2
3
TO
4
POWER CIRCUIT
(CN602) ON
5
SCHEMATIC
6
DIAGRAM-1
7
8
H601
/W601
1
2
3
TO
4
POWER
5
CIRCUIT
(CN601) ON
6
SCHEMATIC
DIAGRAM-2
7
8
9
10

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