Smps Circuit - Panasonic SA-PT660P Service Manual

19.6. SMPS Circuit

1 2 3
SCHEMATIC DIAGRAM - 15
A
G
SMPS CIRCUIT
: +B SIGNAL LINE
B
DCDET1
DCDET
H5801*
+30V_SENSE
+30V_SENSE 8 FAN_18V
E
+30V_SENSE 7
TO
GND 6
D-AMP CIRCUIT
C5832
GND 5
(CN5500) 0.1
-30V_SENSE 4
IN SCHEMATIC
-30V_SENSE
-30V_SENSE 3
DIAGRAM - 12
C
2
FAN_GND
FAN_18V
FAN_18V 1
-30V_SENSE
DCDET
+30V_SENSE
D
DCDET1
CN5802
AM_BP
AM_BP 11
PCONT
PCONT 10
DC_18V
DC18V 9
F AM_BP
DC_18V
TO
DC18V 8
R5825
POWER SUPPLY C5812 0.1
+18V.-12V_GND 7
1K
E
CIRCUIT (CN2004*)
+18V.-12V_GND 6
0.1 Q5803
C5815
IN SCHEMATIC
-13V 5 2SC3940ARA
-13V
DIAGRAM - 13
DCDET 4
SWITCHING
DCDET1
SYS_GND 3
-13V
C5896 0.1
SYS6V 2
SYS6V
SYNC 1 FAN_18V
SYNC
F
K1 0
+30V_SENSE
G
-30V_SENSE
SYS6V
PCONT
H
1 2 3
4 5 6
: -B SIGNAL LINE
D5809
Q5861 - Q5862
MA2J11100L
B1ABCF000176
TRANSFORMER TEMP DETECT
D5801
B0HBSM000043
Q5860
2SA207700L
TRANSFORMER
1 2
TEMP DETECT
C5869
0.1
R5801
R5800
12K 10K
C5800
QR5801 1
0.01
R5840 3 2 1
UNR221400L
100K 2
W5801
DC DETECT
0
3
ZJ5801
W5807 0
QR5802
D5802
B1GDCFGA0018
B0HBSM000043
DC DETECT
R5809
330
W5804 0 W5803 0
W5805 0
IC5801
C0DABFC00002
SHUNT REGULATOR
C
1
3
A
Q5802
2
B1ABCF000176
R
FEED BACK CONTROL
D5806
MAZ80750ML
4 5 6
7 8 9 10
3
T5701
ETS42BM18GAD
MAIN TRANSFORMER
10 9
-30V DRAIN
11
8
AMPGND
12
7
13
6
14
5
+30V
15 4
+FAN 18V
VIN
GND
16 3
+18V VCC
17 2
D5803
R5720
B0HFRJ000012
22
18
1
-12V
Q5720
2SC3940ARA
CURRENT
LIMITING SWITCH
D5805
B0EAMM000057
R5721
10K
Q5722
B1ABCF000176 C5720
CURRENT
LIMITING SWITCH 0.1
R5730
D5722
1K
B0BC019A0007
D5725
B0BC6R100010
PC5720
B3PBA0000402
R5807
330
1 4
2 3
FEED BACK
PC5701
B3PBA0000402
1 4
2 3
FEED BACK
QR5810
B1GBCFLL0037
INVERTER
7 8 9 10
117
11 12 13
R5703 R5702
33K 33K
3
1 2
D5726
B0EAKM000117
D5721
MAZ81800ML
D5729
Q5720
B0EAMM000057
D5728
MA2J11100L
D5724
D5727
MA2J11100L MA2J11100L
R5725
0
C5728
1000P C5727
3300
C5700
F1BAF1020020
1000P
3 2 1
ZJ5803
1/2 2/2
SA-PT660P/PC SMPS CIRCUIT
11 12 13
SA-PT660P / SA-PT660PC
14
1
2
3
TO SMPS
SECTION (2/2)
4
R5732
100
IC5701
C5HACYY00004
SWITCHING REGULATOR
7 OCP/BD
6
FB
5 OLP/SS
C5730
50V1
4 VCC
GND
3
S
2
1 D
R5726 0.82
7
R5727 0.1
14