Daewoo DPC-7909 Series, Service Manual

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1
+3.3V
DV33
V18
+3.3V-1
DC_IN
+5V-1
VIN VIN
+5V
+3.3V
RFV33
3V3P
3V3
VSW
V18
+3.3V
3V3
DV33
PWM1
VGL
VSW
VLC
VSW
VGH
PWM
PWM
RFV33
3V3P
+5V
VIN
VLC
V_4558L
V_4558H
Audio Amp Power
FeedBack Voltage: MP1540=1.25V(1.21~1.29V) FAN5331=1.23V(1.205~1.255V)
R19 10K1% R19 10K1%
C13 1uF C13 1uF
C4 10uF C4 10uF
R21
1K
R21
1K
C21 10uF C21 10uF
SW1
SWITCH
SW1
SWITCH
2
3 1
+
CE15 220uF/6.3V
+
CE15 220uF/6.3V
D9 BAT54S D9 BAT54S
1 2
3
CE19 100uF/16V CE19 100uF/16V
L1
LB 27uH
L1
LB 27uH
R15 100K/NC R15 100K/NC
C5 1uF C5 1uF
C12 1uF C12 1uF
R8
2.2K
R8
2.2K
C14 0.1uF C14 0.1uF
U6 1117-1.8 SOT223 U6 1117-1.8 SOT223
ADJ/GND
1
OUT
2
IN
3
+
CE5 100uF/16V
+
CE5 100uF/16V
C17 0.1uF C17 0.1uF
R9 100K/NC R9 100K/NC
CE17 100uF/6.3V CE17 100uF/6.3V
C23 0.1uF C23 0.1uF
R12
27K1%
R12
27K1%
C135 10uF C135 10uF
D7 BZT52C15S-R D7 BZT52C15S-R
C22 0.1uF C22 0.1uF
D2 B240A D2 B240A
1 2
L13
22uH
L13
22uH
U2
MPS1411
U2
MPS1411
NC
1
BS
2
NC
3
VIN
4
SS
10
EN
9
Comp
8
FB
7
SW
5
GND
6
D2 BAT54C D2 BAT54C
1 2
3
C20 10nF C20 10nF
R2 180K R2 180K
R10 NC/2.4K R10 NC/2.4K
D10 D5819 D10 D5819
1
2
C24 0.1uF C24 0.1uF
U5 AP1513 U5 AP1513
FB
1
EN
2
OCSET
3
VCC
4
VSS
8
VSS
7
Output
6
Output
5
L10
LA 22uH
L10
LA 22uH
R6 NC' R6 NC'
U3 AP1513 U3 AP1513
FB
1
EN
2
OCSET
3
VCC
4
VSS
8
VSS
7
Output
6
Output
5
+
CE12 220uF/6.3V
+
CE12 220uF/6.3V
CE8 220uF/6.3V CE8 220uF/6.3V
D6
D5819
D6
D5819
1
2
R22
15K1%
R22
15K1%
C1 0.1uF C1 0.1uF
C30 1uF C30 1uF
DD2
BAT54S
DD2
BAT54S
3
2
1
R1 NC' R1 NC'
+
CE11 220uF/6.3V
+
CE11 220uF/6.3V
U1 FAN5331 U1 FAN5331
FB
3
GND
2
SW
1
SHDN-
4
VIN
5
C27
NC/10nF
C27
NC/10nF
DD1
BAT54S
DD1
BAT54S
3
2
1
+
CE10 47uF/10V
+
CE10 47uF/10V
L14 22uH L14 22uH
C11 1uF C11 1uF
L11
LB 6.8uH
L11
LB 6.8uH
CE6 220uF/6.3V CE6 220uF/6.3V
R20
510R
R20
510R
C7 1uF C7 1uF
CE20 100uF/16V CE20 100uF/16V
D8 BZT52C10S-R D8 BZT52C10S-R
L4
LA 22uH
L4
LA 22uH
L2
FBC
L2
FBC
L9
FB
L9
FB
R14
10K1%
R14
10K1%
J1
POWER(DS-341-113)
J1
POWER(DS-341-113)
1 3 2
C10 2.2uF C10 2.2uF
C28
3.9nF
C28
3.9nF
D4 BAT54S D4 BAT54S
1 2
3
C29 1uF C29 1uF
C19 0.1uF C19 0.1uF
C15
NC/10nF
C15
NC/10nF
C18
3.9nF
C18
3.9nF
+
CE4 100uF/16V
+
CE4 100uF/16V
C8 10uF C8 10uF
R16 NC/2.4K R16 NC/2.4K
R13 10K1% R13 10K1%
C6 10nF C6 10nF
CON1
XH3A
CON1
XH3A
VIN
2
GND
1
OUT
3
L8
FB
L8
FB
CE16 220uF/6.3V CE16 220uF/6.3V
C9 0.1uF C9 0.1uF
+ CE52 100uF/16V + CE52 100uF/16V
CE2 100uF/25V CE2 100uF/25V
C26 0.1uF C26 0.1uF
+
CE14 100uF/6.3V
+
CE14 100uF/6.3V
R4 47K R4 47K
R18
47K1%
R18
47K1%
R17
1.6M
R17
1.6M
D3 BZT52C9V1S-R D3 BZT52C9V1S-R
+
CE1 100uF/6.3V
+
CE1 100uF/6.3V
L5
LB 6.8uH
L5
LB 6.8uH
C25 0.1uF C25 0.1uF
U4
MPS1411
U4
MPS1411
NC
1
BS
2
NC
3
VIN
4
SS
10
EN
9
Comp
8
FB
7
SW
5
GND
6
CE7 220uF/6.3V CE7 220uF/6.3V
L7
FB
L7
FB
D5 BAT54S D5 BAT54S
1 2
3
L43
FB
L43
FB
R11
1M
R11
1M
R7
4.7K
R7
4.7K
CE13 220uF/6.3V CE13 220uF/6.3V
-
5
-
2.4 Schematic Circuit Diagram
( 1 ) P O W E R _ M P S