Power Board - Dell E178WFPC Service Manual

17" LCD Color Monitor

7.2 Power Board

BD901
!
KBP208G
3 2
C907
+
100uF/450V
!
L902
1 2
4 3
!
7.0mH C905
0.1uF
C902 C901
0.001uF/250V
0.001uF/250V
! !
R915
100K 1/8W
L901
2 3
!
1 4
4.0mH
!
C903
0.47uF/275V
! ! !
R900 R902 R901
680K 1/4W 680K 1/4W 680K 1/4W
!
VAR901
Varistor
N.C
NR901
NTCR !
! F901
t
FUSE
2 1
CN901
SOCKET
!
R904 R905 R908
300K 1/4W NC C906
1500pF/1KV 100K
C938 R932
1500pF/1KV 300K 1/4W D900
R906 FR107
NC
ZD906 D901 R909
RLZ22B FR103 5.1
C908
+
22uF/50V
R933
300K 1/4W R907
NC
D903 LL4148WP
IC901
!
4 5
RT NC
3 6 R910 Q901
VCC CS
2 7 10 1/4W 2SK2645-54MR
COMP VCC
1 8
GND OUT
R938
ZD905
10K 1/8W
LD7552BPS
RLZ18B
FB901
BEAD
R912
220 1/4W
R914
0.47
C928 C909
470pF/25V
0.001uF
GND1
GND
1
2
FG
HS2
HEAT SINK(D906)
1
2
HS3
HEAT SINK(Q901)
1
2
100 1/4W R918
100 1/4W R919
C912
0.001uF
100 1/4W R920
!
1
T901
4 9 D906
MBFR10150
2W 5 7 R935 100 1/4W
6 11 R961 100 1/4W
4
10
R962 100 1/4W
6
1 8
1/4W
D907
3 12
N.C
NC
POWER X'FMR
R925
IC903 1K 1/8W
!
PC123X2Y FZOF
C924
0.1uF
R926
1K 1/10W 1%
2W IC904
KIA431A-AT/P
C925
NC
C921
3300PF/250V
34
L904 R941 R945
1K 1/4W 1K 1/4W
1.1uH
C922
470uF/25V
+
R944
R946
+ +
C917 C918 1K 1/4W
680uF/25V 680uF/25V 1K 1/4W
3
Q903
PMBS3904
C932
3 1
1000pF
D905
C929
31DQ06FC
0.001uF L903
1.1uH
C940
+ +
C939 1000uF/16V
+
1000uF/16V C915
470uF/16V
R924
150R 1/8W
ZD921
RLZ13B
D915
LL4148WP
CN902
1
2
3
4
+5V
5
DIM
6
ON/OFF
7
8
9
C916 10
0.1uF
CONNECTOR
VOL
MUTE
Title
Size
Date:
Dell E178WFPC
+12V
ZD902 C930
RLZ13B
0.1uF
R943
1K 1/8W
ZD901
NC
R939
NC
F903
+5V
0
R940
33K 1/10W
ZD922
RLZ5.1B
R927
3.6K 1% 1/10W
D916
LL4148WP
R942
1K 1/10W 1%
R930
2.43K 1% 1/10W
G2545-1-2-X-2-070524
Document Number Rev
1
Thursday , May 24, 2007 Sheet 1 of 2