Smps Circuit - Panasonic SA-XH20PH Service Manual

17.5. SMPS Circuit

1 2 3
SCHEMATIC DIAGRAM - 15
A
E
SMPS CIRCUIT
B
H2016*
23.5V 1
23.5V 2
GND 3
B
GND 4
TO
12V 5
MAIN CIRCUIT
C
PCONT 6
(CN100)
ECO_CNTRL 7
IN SCHEMATIC
DC_DET
8
DIAGRAM - 12
GND 9
F+ 10
F- 11
-VP 12
D
E
F
G
NOTE: " * " REF IS FOR INDICATION ONLY
H
1 2 3
4 5 6
: +B SIGNAL LINE : -B SIGNAL LINE
D2909 D2908
DZ2J24000L B0EAMM000057
R2914 C2903
D2903
47K 35V33
B0EAMM000057
4
5 3
6 2
T2900 7 1
G4D1A0000142 8 9
SWITCHING TRANSFORMER
D2901
DZ2J36000L
C2912 D2906
6.3V100 B0EAMM000057
4 5 6
7 8 9
R2903
R2900 3.3
4.7K
IC2900
C0DBAYH00005
+12V VOLTAGE REGULATOR
R2909
VIN VOUT GND ADJ ON/OFF 1K
R2902 C2902
1 2 3 4 5
47 5600P
R2905 R2906
4.7K 30K
Q2900
B1BABK000001
L2900
POWER SAVE CONTROL G0A330G00016
R2901
0
C2900 C2906 C2907 C2908 R2908 C5725
16V33 16V820
25V100 0.1 10K
R5735 C5727 C5726
1K 1000P 0.33
R5731 R5729
39K 15K
R5730
4.7K
4 3
R C
IC5702
C0DBZMC00006
SHUNT REGULATOR
NC A
R5817
1 2
0
7 8 9
99
10 11 12
0.1
1/2 2/2
SA-XH20PH SMPS CIRCUIT
10 11 12
13 14
1
2
3
4
TO SMPS
CIRCUIT (2/2)
13 14