Smps Circuit - Panasonic SA-XH170EB Service Manual

17.6. SMPS Circuit

1 2 3
SCHEMATIC DIAGRAM - 18
A
F SMPS CIRCUIT
B
CN5700
1
PCONT 10
DCDET 9
A PGND 8
TO
PGND 7
MAIN(MICON)
C
PGND 6
CIRCUIT (CN2004)
DC18V 5
IN SCHEMATIC
DC18V 4
DIAGRAM - 11
POWER_CONT 3
SYS3.3V 2
SYNC 1
10
D
E
H5700
E
TO
+35V 4
D-AMP CIRCUIT
+35V 3
(CN5400)
PGND 2
IN SCHEMATIC
PGND 1
DIAGRAM - 16
K572...EB/EG/EP
0
F
G
NOTE: " * " REF IS FOR INDICATION ONLY
H
1 2 3
4 5 6
: +B SIGNAL LINE : -B SIGNAL LINE
QR5862
B1GBCFGG0030
DC DETECT
PCONT
PGND
SYS3.3V
SYNC
R5801
100
C5817
6800P
R5814
100K
R5805
6.8K
4 5 6
7 8 9
D5802
B0HBSM000056
HEATSINK*
G1 G2
1 2 3
R5862
3.3K
T5701
ETS61BA126AD
MAIN TRANSFORMER
10
R5832 C5806 C5805 C5840
GND
8.2K 1 0.01
50V820 11
12
13
R5809 R5866
680 0 14
+35V
15
GND
16
C5813
35V330
17
+21V
D5803
B0HFRJ000012
18
C5826 C5800
0.01 0.01
3 2 1
ZJ5703
R5802
10K
R5806 C2904 C2902
15K 1000P 56P
R5804
82K
C5818
0.1
7 8 9
110
10 11 12
2 1
9
D5702
B0ZAZ0000089
8
3
7
6
R5702
100K
D5704
5
R5703 C5713 DZ2J200M0L
100K 0.01
4
VIN
Q5720
B1BAAJ000003
R5720 D5712 D5706
R5722
VOLTAGE REGULATOR
22 B0EAMM000057 2.2K DA2J10100L
VCC
2
R5721
10K
D5710
1
GND B0ECFR000003
C5720
100P
D5705
DZ2J200M0L
C5721
220P
D5708
DA2J10100L
PC5704
B3PBA0000503
D5703 FEEDBACK
R5807
DZ2J062M0L
680
1 4
R5803
R5729 R5808 C2903
220
47K 2.2K 1000P
2 3
K
IC5802
A C0DBZYY00490
SHUNT REGULATOR
R
1/2 2/2
SA-XH170EB/EG,SA-XH175EP SMPS
10 11 12
13 14
P1
7
6
5
C5726 R5725 C5722
50V10 47K 820P
4
3
2
R5730
1K
1
D5707
DZ2J062M0L
TO SMPS
CIRCUIT (2/2)
CIRCUIT
13 14