Power Board - RCA L37WD23 Service Manual

37'' LCD TV

9.2 Power Board

VCC2
!
D901
1N5406
D902
C974 L907
FMX-G26S
320 uH
0.01uF/1KV
C911
1uF/450V R908
!
R907 0
R903 68K 1/10W
620K 1/8W
! L903 VCC2
120uH R904
620K 1/8W
IC901
FA5500AN
C910 +
1uF/450V R905 C913
0 1/8W C914 22uF/50V
!
0.1uF
BD901
2 3
!
R906
D25XB60 10KΩ 1% 1/8W C915
FB904
0.01uF R914
10K
1 2
BEAD
C916
220pF C917
0.47uF/25V
D111
L911
1 4
! R111 R112
BA159G 4.7M 1/8W 4.7M 1/8W
2 3
C111
7mH
0.01UF/1KV
C908
0.47uF/250V
!
B+
C902 C905
680PF/250V 680PF/250V
! !
L902
1 4
!
R965
2 3
VCC1 10K 1/8W
7mH
C909
0.47uF/250V
!
C912
0.1uF/50V
IC905
L901 LD7575
1 4 LD7575
7
N.C OUT
1
RT CS
2 3
R900 7mH R902 R974
330K 1/8W 330K 1/8W 100K 1/10W
!
!
! !
!
R901 330K 1/8W
C903
RV901 C904
1000PF/250V
!
Varistor 1000PF/250V
! F901 !
5A/250V
!
CN901
3P/3.96mm
Q910
J916
2 3
PMBS3906 100 1/6W
1K 1/8W
R960
R955 470 1/8W
10K 1/8W
R922 ZD906
RLZ15B
R920
100K 1/8W
1 Q903
PMBS3904
D904
UF4003PT C920 C919
+
B+
22uF/50V 0.1uF
FB901
FB903
NR901
BEAD
1 2 1 2
BEAD
SCK055 C980
Varistor
C906 C907 C985
+ +
120uF/450V 120uF/450V
FB905
0.01UF/1KV
BEAD
R915
330K 1/8W
D903
1/10W LL4148WP
!
R909
22 1/10W Q901
STW25NM60N R949
20K 1/10W ZD901
RLZ18B C923
R910 100PF
IC902
20K 1/10W R916 VCC3
330K 1/8W 1 8
Demag HV
2 7
FB N.C
R911
330 3 6
CS Vcc
R956 R912
0.3Ω 3W 0.3Ω 3W C926 4 5
GND Drv
R917 470PF
330K 1/8W
NCP1377 C924
C925
C918 0.1uF
330PF/50V 47uF/50V
R919 R938
18K 1/10W 1% R967
10KΩ 1% 1/8W 270K 1/10W
1/10W
C927
1500PF
IC111
1 4
OUT GND
2 3
VIN N.C
R113 NCP305
4.7M 1/8W
C112
0.1uF
R114 BD901 H.S.
330K 1/8W
R983 C957
47 1/2W 0.001uF/500V
D924
FME-220B
FB902
BEAD T903 2
6
O 12
11 + C959
R971
100KΩ 2W R984 C958 1000uF/25V
C950
47 1/2W 0.001uF/500V
1500pF/1KV
O 10
D900
BA159GPT
D916 4 8
UF4003PT 7
2 2 + C962
1000uF/25V
C951 R973 D921
+
22uF/50V 2R2 1/8W O 9 N.C FMW-2156
ZD904 1 O
27Vz
D920
LL4148WP
R976
Q900
5 STP10NK70ZFP
3 10 1/8W
R977 R997
10K 1/10W 470 1/4W
ZD921 ZD922
RLZ13B RLZ5.1B
R979
1K 1/10W
C952 R978
220pF/50V 0.56Ω 3W D915
LL4148WP D917
LL4148WP
C953
470PF/25V R923
IC904 1K 1/10W
PC123FY2 4P
D911 R921
N.C LL4148WP 1K 1/10W
C966
0.1uF/50V
C954 R981
0.1uF/50V 100K 1/10W R932
1K 1/4W
IC911
KIA431
!
1 Q904
PMBS3904
C901
1000PF/250V
VCC3
NCP1377 VCC
C900
13.8 ON
R940
C930
20V籹祘
!
330PF K 250VAC
2200PF/1KV
22Ω 2W
T901
1 7
FME-220B
C929 10
0.01UF/1KV
R925 11
C922 47KΩ 3W
0.0022uF/2KV
FME-220B
D906 D907
BA159G BA159G 3 12
R926
5
20K 1/10W
! 9
R927 6 8
10K 1/10W
D908
LL4148WP
R928
22 1/10W Q902
2SK3679
FME-220B D910
C938 R939
!
+ C973 ZD910 R929
RLZ18B
0.1uF 20K 1/10W 1000PF/1KV 47 /1W
R935
20K 1/10W
R930
100 1/10W
R931
0.22Ω 3W
R941
470 1/6W
C969
10K
R944
0.0047uF/250V
R942
+12VP
2K 1/10W
IC910
PC123FY 2 4P
L921
0 1/10W
C943
R943
3.5uH
+ C960 +
1000uF/25V C972 ZD920
1000UF/25V PTZ9.1B 0.1uF
L922
IC921
KIA431
3.5uH
+ C963
+ C956 470uF/25V
1000uF/25V +5Vs
R975
220Ω 1W
VCC1
VCC2
R987
Q914
33K
2 3
PMBS3906
R966
1K 1/10W
R985
10K 1/8W
R934
33K 1/10W 1% IC912
PC123FY 2 4P
R998
10K 1/10W R999
3.6K 1/10W 1%
!
C965 Q915
0.1uF/50V PMBS3904
R924
1K 1/10W
R933
2.4K 1/10W 1%
51
24VI
L905
RJ901
1
C931 C933
3.0uH +-10%
+ C932 + + C935
D931 + + C934 470uF/35V
1000uF/35V
1000uF/35V 1000uF/35V
1000uF/35V
D932
R950
1K 1/16W
5
Vcc out
IC931
FP130KR-LF
+18VI
L906 F902
3.0uH +-10%
R30-250(30V/2.5A)
R913 !
C939 C941 1KΩ 1W
+ +
1000uF/35V 470uF/35V
+12VP
+5V
+5Vs
R989
JUMPER
1/10W
R990
75K 1/10W 1% ZD905
MTZJ22B(13.89~14.62V)
C944
0.1uF
ZD903
MTZJ27B(24.97~26.26V)
R946
15K 1/10W 1%
R945
D913 D918
LL4148WP LL4148WP
0 1/10W
R947
1.5K 1/10W 1%
S_PROTECTION
F903
0 1/8W
+12VP
Q907
AO4411
+5Vs
1 8 Q906
S1 D1
2 7 AO4411
S1 D1
3 6 C961
S1 D1
4 5 1 8
G1 D1 S1 D1
1/10W 0.1uF 2 7
S1 D1
3 6
S1 D1
4 5
G1 D1
R936
33K 1/10W
S_PROTECTION
R986 R991 Q912
1K 1/10W 2K 1/8W PMBS3904 R937
1
R994 10K 1/10W
1.5K 1/10W
C948
1uF
SCR901
2N5060 2
R988
1
1K 1/10W
C964
0.1uF
R993
Q923 1 C967 R995
PMBS3904 1uF 1K 1/10W
1K 1/10W
C968 R992
0.1uF 1K 1/8W
RCA L37WD23
FOR BACKLIGHT
24V/5.7A
24V
CN921
1
2 2
3
8m C942 4
1000pF 5
6
C936 7
0.1uF 8
9
10
11
R951 12
1K 1/16W R952 13
1K 1/16W 14
Q921 14P/2.0mm
PMBS3904
R953
CN922
1 1K 1/16W
R954 FB906 1
24KΩ 1/10W BEAD 2
C970 3
0.1uF 4
5
6
7
D923 C940 8
1N4148 9
0.01uF
10
10P/2.0mm
+18V
S_PROTECTION
CN923
1
2
3
4
5
6
7
8
9
10
11
12
C945 C946 C947 13
14
0.1uF 0.1uF 0.1uF
15
PS
16
16P/2.0mm
PS
W ednesday, November 29, 2006
Title
T2178-1-X-X-1-061127
Size Document Number Rev
Custom NORCENT 37" TV 1
Date: Sheet 1 of 2