Daewoo DPC-7900 Series, Serivce Manual

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5
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2.4 Schematic Circuit Diagram
( 1 ) P O W E R _ M P S
1
DELETA
9VIN
+3.3V
+5V
NCTR_5V
CTR_5V
LDO_AV33 RFV33
NCTR_5V
9VIN
+5V +3.3V
CTR_5V
NCTR_5V
+3.3V
RFV33
+3.3V
LDO_AV33
RM4 39K
QM
1
OPEN/3904
1
2 3
UM1
MPS1580
1 2 3 4
8 7 6 5
BS Vin Vsw GND
Sync
EN
Comp
FB
CM7 220uF/6.3V/LU
D1 LED1
1
3
2
C135
22uF
C4
10uF
UM2
MPS1580
1 2 3 4
8 7 6 5
BS Vin Vsw GND
Sync
EN
Comp
FB
LM
4
6.8uH
RM7
OPEN
R1
330O
+
C120 220uF/6.3V/lu
RM3
30.9K
RM12
OPEN/10K
CB59 0.1uF
RM11 4.7K/open
+
C121 220uF/6.3V/lu
L26 FB
RM1
10K 1%
R156
4.7k/open
CB60 0.1uF
RM10 10K
RM8
16.9K
L27 FB
RM9 OPEN
RM2
33R
Q1 3904
1
2 3
CM3
0.022uF
CM1
0.01uF
CM5
100pF
CM10
100pF
CM9
0.022uF
CM8 0.01uF
RM6
10K 1%
LM
2
6.8uH
RM5 10K
C136 22uF
C119
10uF
DM1
DIODE
1 2
CM2
100uF/10V/LU
DM2
DIODE
1 2
LM
1
22uH
LM
3
22uH
R2
330O