Smps Circuit - Panasonic SCXH70 Service Manual

17.5. SMPS Circuit

1 2 3
SCHEMATIC DIAGRAM - 14
A
G
SMPS CIRCUIT
H2016*
B
B
TO
MAIN/D-AMP
SYS5VGND
CIRCUIT
(CN103)
IN SCHEMATIC
DIAGRAM - 10
12VGND
3.9V(FL1)
3.9V(FL2)
ECO CTL
C
D
E
F
G
H
1 2 3
4 5 6
: +B SIGNAL LINE : -B SIGNAL LINE
VDD 1
VDD 2
GND 3
GND
4
SYS5V
SYS5V 5
SYNC
SYNC 6
SYS5VGND
7
12V
12V 8
DCDET
DCDET 9
PCONT
PCONT 10
11
12
13
D2909 D2908
L2914
14 MAZ8240GHL B0EAMM000057
J0JBC0000041
-26V 15
T2900
G4D1A0000118
SWITCHING TRANSFORMER
R2914 C2903
47K 35V33
4
5
D2903
B0EAMM000057
6
7
8 9
L2915
J0JBC0000041
C2912
L2916 D2906
16V100
J0JBC0000041 B0JAME000029
R5802
C5810
18K
0.1
R5803
2.7K
R5804
R5806
2.7K
15K
C5818
0.1
R5801
2.7K
Q5863
B1ABCF000176
R5865
4.7K SWITCH
R5829
22
C5864 R5866 C5870 C5820
R5817
0.1 100K 0.01 560 6.3V2200
4 5 6
7 8 9
R2905
4.7K
C0DBAYH00005
SWITCHING REGULATOR
VIN
1
FP2901
L2910 1A
L2900
G0C390JA0055 G0A330ZA0045
1 2
R2900
4.7K
Q2900
3
B1BABK000001
C2900
16V33
POWER SAVE CONTROL
2
C2906
16V820
1
R2902 C2902
47 5600P
B3PBA0000454
R5809 R5807
330 330
1
R5808
2.2K
2
C
1
IC5801
C0DAEMZ00001
3
A SHUNT REGULATOR
2
R
7 8 9
108
10 11 12
R2906
30K
IC2900
D5802
B0HBSM000054
VOUT GND ADJ ON/OFF
2 3 4 5
Q5841 1 2 3
B1GBCFGG0030
R5843
DC DETECT
2.2K
C5843 R5842
1.5K
1
C2908
0.1
R5834
2.2K
C5800
0.01
3 21
ZJ5802
PC5720
FEED BACK
R5730
1K
4
3
D5725
B0BC6R2A0266
1/2 2/2
SA-PT75PH SMPS CIRCUIT
10 11 12
13 14
P1
4
3
2
1
TO SMPS
SECTION (2/2)
13 14