Active Subwoofer (Sb-Hwa880) - Panasonic SU-HTB885EB Service Manual

10.2. Active Subwoofer (SB-HWA880)

10.2.1. AUDIO & POWER SUPPLY (1/2) BLOCK DIAGRAM
: AUDIO OUTPUT SIGNAL LINE
SW AC INLET P.C.B.
P5701
AC INLET
NOTE: " * " REF IS FOR INDICATION ONLY
IC5799
SWITCHING MODE POWER
SUPPLY CONTROL
CL 3
D5791
VCC 4
D 5
FB 2
VDD 1
D5701
L5702 L5703
TH5702
F1
TL11* TL10*
1 2 1 2
RED RED
TL21*
TL20*
4 3 4 3
BLK
BLK
DZ5701
Q5721
SWITCH
IC5701
SWITCHING
D5926
REGULATOR
D 1
D5710 D5704
VCC 4
Q5720
D5706,D5709
VOLTAGE
OCP/BD 7
REGULATOR
D5708 D5705
Q5722
CURRENT
LIMITING
SWITCH
FB 6
SW SMPS P.C.B.
T5751
TRANSFORMER
D5798
6
D5896
5 7
2 10
1
D5793
3
IC5899
SHUNT
REGULATOR
PC5799
FEEDBACK
CIRCUIT
Q5851,Q5852,
Q5853,QR5854
DC DETECT
CIRCUIT
D5851,D5852
PC5701
QR5810
PCONT
PCONT
3 2
SWITCH
4 1
Q5865,Q5866,QR5867
DC DETECT
+32V
CIRCUIT
T5701
TRANSFORMER
4 QR5801,QR5802
5
DC DETECT
CIRCUIT
D5802
6 14
D5702
13
8
11
7
12
D5801
10
9
D5712
2
1
D5928
FEEDBACK
D5707
CIRCUIT
IC5801
SHUNT
REGULATOR
PC5720
PRIMARY SECONDARY
SC-HTB885EB/EG(SB-HWA880EB/EG) AUDIO & POWER SUPPLY (1/2) BLOCK DIAGRAM
54
TH5860
TO AUDIO & POWER SUPPLY
SYS5V
1
DC DET 5V
2
PCONT 5V
3
PVCC +32V
4
PVCC -32V
5
BLOCK (2/2)