Panasonic SA-BT300PX Service Manual page 109

15 16 17 18
SCHEMATIC DIAGRAM - 41
K
SMPS CIRCUIT
: +B SIGNAL LINE
P1
Q5898
SYNC
B1ABCF000176
INVERTER
R5897
R5821
100
100K
TO SMPS
SECTION (1/2)
SYS5V
IC5899
C0DAEMZ00001
SHUNT REGULATOR
C
A
R
SYS_GND
PCONT
1
2
3
15 16 17 18
19 20 21
: -B SIGNAL LINE
PC5702
B3PBA0000402
SYNC SWITCH
4 1
R5898 D5730
820K MA2YF8000L
3 2
C5897
0.1
PC5799
B3PBA0000402
FEED BACK
R5894
1K
1 4
R5890
2.2K
2 3
T5751
ETS19AB2A6AG
BACKUP TRANSFORMER
R5798 D5798
22 B0EAMM000057
6
D5896
B0EAMM000057
7 5
8
4
9 3
1
C5899 R5786
R5895 R5893
10V220 200K
15K 33K
10 2
3
C5898 R5892
0.1
3.3K
1
2
C5790
R5891
2200P
33K
R5896
0
C5706
F1BAF471A013
470P
R5820
2.7K Q5899
B1ABCF000176
RELAY DRIVE
R5899
47K
19 20 21
22 23 24
R5705
120K
R5707
270K
C5798
50V10
5 D VCC 4
C5795 R5795
1000P 470K
TR 3
D5793
B0HAMP000094
7 S FB 2
R5797
15K
S VDD
8 1
C5796
IC5799
0.1
MIP2F20MSSCF
D5799
SWITCHING POWER B0EDKT000009
SUPPLY CONTROL
2 3
C5799
400V6.8
1 4
RY701
K6B1AEA00003
4 2
D5899
MA2J1110GL
3 1
22 23 24
109
25 26 27
R5704
120K
R5706
270K
BLK
TL2*
L
TO
AC INLET CIRCUIT
IN SCHEMATIC
F2
T1.6A 250V
DIAGRAM - 42
TL1*
RED
WHT
TL3*
M
TO
VOLTAGE
SELECTOR CIRCUIT
IN SCHEMATIC
DIAGRAM - 42
TL4*
BLU
1/2 2/2
SA-BT300PX SMPS CIRCUIT
25 26 27
28
A
B
C
D
E
F
G
H
28