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Smps Circuit - Panasonic SA-BT300PX Service Manual

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16.6. SMPS Circuit

1
2
3
SCHEMATIC DIAGRAM - 40
A
K
SMPS CIRCUIT
B
JW1*
+30V_SENSE
8
+30V_SENSE
7
J
TO
GND
6
C
D-AMP CIRCUIT
GND
5
(CN8502)
-30V_SENSE
4
IN SCHEMATIC
-30V_SENSE
3
DIAGRAM - 34
FAN_GND
2
FAN_13V
1
D
K5723
0
E
F
CN5802
POWER_CONT
11
PCONT
10
DC18V
9
B
TO
DC18V
8
MAIN CIRCUIT
+18V.-12V_GND
7
(CN7001)
+18V.-12V_GND
6
IN SCHEMATIC
-13V
5
G
DIAGRAM - 26
DCDET
4
SYS_GND
3
SYS6V
2
SYNC
1
H
1
2
3
4
5
6
: +B SIGNAL LINE
: -B SIGNAL LINE
FAN_18V
D5809
D5811
D5733
MA2J1110GL
MAZ8051GML
MAZ8270GLL
D5810
+30V_SENSE
MA2J1110GL
DCDET
C5831
Q5862
0.1
B1ABCF000176
B0HBSM000043
DC DETECT
C5832
0.1
-30V_SENSE
R5865
22K
C5791
R5864
R5863
FAN_18V
1
470
5.6K
1
C5823
0.1
-30V_SENSE
R5862
R5832
2.2K
3.3K
50V2200
GND
R5834
3.3K
50V2200
+30V_SENSE
D5807
MA2J1110GL
DCDET
1
DC_18V
B0HBSM000054
-13V
FAN_18V
C5817
R5802
100V0.1
15K
PCONT
DC_18V
R5803
C5812
1.2K
0.1
C5815
R5814
R5804
0.1
8.2K
180K
-13V
DCDET
R5729
10K
SYS_GND
SYS5V
Q5863
R5728
SYNC
B1ABGC000001
R5805
68K
6.8K
SWITCH
C5896
0.1
Q5861
R5817
R5819
B1ADCE000012
2.2K
22
R5861
C5869
SWITCH
0.01
100K
R5818
GND
4
5
6
7
8
9
D5801
T5701
ETS42BM1F6AC
MAIN TRANSFORMER
9
2
3
D5702
-30V
DRAIN
B0ZAZ0000052
11
8
AMPGND
12
7
C5805
C5840
0.01
13
6
C5842
C5808
0.01
14
5
+30V
15
4
+FAN 18V
VIN
GND
16
R5720
D5731
22
B0EAMM000057
VCC
+18V
17
2
2
3
C5811
18
1
0.01
-12V
D5802
C5813
35V330
C5826
1
0.01
2
ZJ5801
C5816
3
25V470
C5827
0.01
D5805
C5824
B0EAMM000057
25V220
C5800
0.01
PC5720
B3PBA0000402
FEED BACK
R5809
R5807
R5730
C5810
330
330
1K
0.1
1
4
R5808
2.2K
2
3
D5725
MAZ8062GML
C
1
R5806
IC5801
15K
C0DABFC00002
3
C5818
A
SHUNT REGULATOR
0.1
2
R
100
7
8
9
108
10
11
12
D5701
B0FBAR000041
4
3
2
R5723
1
33K
R5724
33K
2
1
C5711
400V330
3
C5712
R5702
400V330
100K
C5713
0.01
R5703
100K
D5721
MAZ8200GML
R5722
D5724
D5727
2.2K
MA2J1110GL
MA2J1110GL
Q5720
R5725
2.2K
2SC3940ARA
CURRENT LIMITING
SWITCH
D5729
R5721
10K
B0EAMM000057
C5720
1000P
C5727
D5722
C5721
C5726
MAZ8200GML
220P
50V10
2200P
D5726
MA2J1110GL
C5722
R5732
2200P
D5723
220
MA2J1110GL
D5732
MAZ8300GML
C5700
F1BAF471A013
470P
3 2 1
ZJ5803
1/2
2/2
SA-BT300PX SMPS CIRCUIT
10
11
12
13
14
P1
1
2
TO SMPS
SECTION (2/2)
3
IC5701
C5HACYY00003
SWITCHING REGULATOR
7
OCP/BD
6
FB
C5723
470P
5
OLP/SS
R5733
47K
4
VCC
C5730
3
GND
1
2
S
C5747
820P
1
D
R5726
0.1
13
14

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