Diagramas De Circuito; Diagrama De Circuito Smps - LG MCD204 Manual De Servicio

DIAGRAMAS DE CIRCUITO

1. DIAGRAMA DE CIRCUITO SMPS

BD Option(BD901)
12
1、MCD104=4A(GBU4J)
2、MCD204=6A(GBU6J)
+ +
11
4 1
BD901 BD901
Option GBU6J GBU6J
10
Option (TH901)
LF901 LF901
1.MCD104=5R
UU15.7
2.MCD204=4R
W928 W928
W929 W929
9
7.5mm/NC 7.5mm/NC
7.5mm/NC 7.5mm/NC
8
CM901 CM901
C906 C906
470P/250V 470P/250V
0.1uF/275V 0.1uF/275V
(XCAP)
7
CY902 CY902
LF902 LF902
UU15.7
2200P/250V 2200P/250V
6
CM902 CM902
0.1uF/275V 0.1uF/275V
(X2)
5 R900 R900
1.5M 1/2W 1.5M 1/2W
VR901 VR901
POWER=MCD204,MCD104
1 2
MCD204=LF902,LF901
14D681k 14D681k
4 MCD104=LF901,
Option
Fuse Option(F901)
F901 F901
1、MCD204=6.3A
T6.3AL 250V T6.3AL 250V
2、MCD104=3.15A
L N
3
PN900 PN900
AC_IN AC_IN
2
BR BL
(BK) (WH)
INPUT:110/220V
1
A B C D
MCD-104=R909-OR
cap Option (C905)
C907 C907 MCD-204=R909-1OR
R918 R918
0.01uF/630V 0.01uF/630V
56K 2W 56K 2W
1.MCD104=WIDE(180uF/450V)
R909 R909
2.MCD104=110V(180uF/250V)
10R 1W 10R 1W
3.MCD204=WIDE(270uF/450V)
D901 D901
4.MCD204=110V(270uF/250V)
NC NC
5、Russia=270uF/500V
6、India=270uF/500V
C908 C908
IC Option (IC900)
470pF/1KV 470pF/1KV
7、Niziria=180uF/500V
FB901 FB901 1.MCD204=STR-X6757N
BEAD BEAD
2.MCD104=STR-W6753
IC901 IC901
STR-X6757N STR-X6757N
2 6
S/GND FEEDBACK
+ +
+ +
C911 C911
470PF/100V 470PF/100V
D904 D904
FB903 FB903
R907 R907 R919 R919
BEAD BEAD
180R 1/8W 180R 1/8W 2.2K 1/8W 2.2K 1/8W
1N4148 1N4148
Res Option(R910,R912,R908)
POWER=MCD204.MCD104
2 3
1、R910= X、 X
D902 D902
2、R912=0.22R、0.22R
jump jump
3、R908=0.30R、0.30R
D905 D905
jump jump
+ + C904 C904
NC NC
D908 D908
UF4007 UF4007
FB902 FB902 BEAD BEAD
D907 D907
10R 1/8W 10R 1/8W
FR107 FR107
D906 D906
IC902 IC902
STR-A6252 STR-A6252
10R 1/8W 10R 1/8W
FR107 FR107
EBJ40392102
C915 C915 33V 33V
2A102J 2A102J 103/50V 103/50V ZD902 ZD902
C919 C919
+ + + +
R917 R917 C921 C921
0.47R 2W 0.47R 2W 9.1V 9.1V C923 C923 C903 C903 10uF/50V 10uF/50V
ZD906 ZD906 104/50V 104/50V 47uF/50V 47uF/50V
E F G H I
3-23
INSTRUCCIONES DE SEGURIDAD
AL REALIZAR TAREAS DE MANTENIMIENTO EN
ESTE CHASIS, BAJO NINGUNA CIRCUNSTANCIA
DEBERÍA MODIFICARSE EL DISEÑO ORIGINAL NI
ALTERARSE SIN PERMISO DE LG
CORPORATION. TODOS LOS COMPONENTES
DEBERÁN SUBSTITUIRSE ÚNICAMENTE CON
TIPOS IDÉNTICOS A LOS DEL CIRCUITO
ORIGINAL. LOS COMPONENTES ESPECIALES
APARECEN SOMBREADOS EN EL ESQUEMA
1
T901(Option)
EBJ34934901(MCD204=200W)
T901 T901
6170RNGW25C(MCD104=100W)
D941(Option)
16
D941 D941
3
(200V/20A) (200V/20A)
15
C930 C930
470pF/1KV 470pF/1KV
R964 R964
1.8K (1/8W 1.8K (1/8W
14 R961 R961
1K 1/8W 1K 1/8W
Res Option(R948,R969)
13 + +
1.MCD104=R948/15K,R969/510R 1%
7 2.MCD204=R948/22K,R969/560R 1%
12 R962 R962
1K 1/8W 1K 1/8W
IC949 IC949
2 1
8 11 KA431C KA431C
EER4249 EER4249
PC901 PC901 EL817 EL817
R911 R911 4.7K 1/8W 4.7K 1/8W
4 1
3.9K 1/8W 3.9K 1/8W
ZD901 ZD901
3 2 R953 R953
+ +
1K 1/8W 1K 1/8W
2.7V 2.7V
PC902 PC902 EL817 EL817
4 1
R916 R916
3 2
2K 1/8W 2K 1/8W
1 15
R994 R994
2
C948 C948
0.2R/0.125W 0.2R/0.125W
330uF/16V 330uF/16V
D945 D945
R993 R993
2 14
FUSING RE FUSING RE ZD950 ZD950
UF4004 UF4004
D948 D948 2.7V/0.5w 2.7V/0.5w
3 13
FR157 FR157
9,12 C971 C971
R959 R959
100uF/50V 100uF/50V
R913 R913
4 56K 1/8w 56K 1/8w
D970 D970 FR107 FR107
11
D943 D943 IN5822 IN5822 L944 L944 22uH 22uH
7
R921 R921 C932 C932
C965 C965
5
330uF/16V 330uF/16V
+ +
1000uF/16V 1000uF/16V L943 L943
D940 D940
8
UF5404 UF5404 22uH 22uH
C979 C979
1000uF/25V 1000uF/25V
+ + + +
T902 T902 C970 C970
1000uF/25V 1000uF/25V
D959 D959
IN5822 IN5822
L945 L945
10
22uH 22uH
R949 R949
C981 C981
10uF/50V 10uF/50V 3K9 3K9 + +
1000uF/16V 1000uF/16V
C947 C947 + +
C945 C945
6
R941 R941
FR107 FR107 1000uF/16V 1000uF/16V
R973 R973
150R 150R
D949 D949
EER2828 EER2828 330R 1/8W 330R 1/8W
PWR_SENSE
PC903 PC903 EL817 EL817
4 1
1.5K 1/8W 1.5K 1/8W
R974 R974 R977 R977
4.7K 1% 4.7K 1%
C977 C977
3 2
1uF/50V 1uF/50V
R985 R985 1K 1/8W 1K 1/8W
3
IC942 IC942
KA431 0.5% KA431 0.5% R987-R986 3.3K 1% R987-R986 3.3K 1%
J K L M
3-24
NOTA :
PARA PODERLOS IDENTIFICAR CON FACILIDAD. 1. Las partes oscurecidas ( ) son críticas para la
ESTE DIAGRAMA DE CIRCUITO PUEDE DIFERIR
EN OCASIONES DEL CIRCUITO REAL UTILIZADO.
DE ESTE MODO, LA IMPLEMENTACIÓN DE LOS 2. La tensión de la CC se mide con la ayuda de un
ÚLTIMOS CAMBIOS POR MEJORAS EN
SEGURIDAD Y RENDIMIENTO EN EL PRODUCTO
NO SE VEN RETRASADOS POR POSIBLES
DEMORAS EN LA IMPRESIÓN DE LA NUEVA
DOCUMENTACIÓN.
PN901 PN901
15P/2.5mm 15P/2.5mm
cap Option (C950,C951)
1.MCD104=1000uF/50V,1000uF/50V
15
+36V/12A
2.MCD204=2200uF/50V,1000uF/50V
14
+36V/12A
13
+36V/12A
GND
W931 W931 12
PGND
5mm/NC 5mm/NC
2 1
11
PGND
L941 L941
10
+3.3V_PWM
20UH/12A 20UH/12A
9
2200uF/50V 2200uF/50V
+3.3VD(1.5A)
C951 C951
C928 C928
C950 C950 USB_5.6V
8
+ + + +
USB_5.6V
2200uF/50V 2200uF/50V R948 R948 104/50V 104/50V
7
15K 1/8W 15K 1/8W +5V(1.5A)
6
DGND
R969 R969 +5VM
5
+5VM
510R 1/8W 510R 1/8W
4
MGND
3
+12VA(400MA)
2
-12VA
1
AGND
R963 R963
2K 1/8W 2K 1/8W
R999 R999
R976 R976
18K 1/8W 18K 1/8W
R997 R997
C935 C935
47uF/50V 47uF/50V
5.6K 1/8W 5.6K 1/8W
Q942 Q942
1
A1273 A1273
R975 R975
R957 R957
1K 1/8W 1K 1/8W
1K 1/8W 1K 1/8W
C934 C934
47uF/50V 47uF/50V
3 2
Q941 Q941
8 FL+/250mA
C3205 C3205
7 FL-/250mA
3
6 VKK
R951 R951 R950 R950
5 DGND_CPU
4.7K 1/8W 4.7K 1/8W 1K 1/8W 1K 1/8W
4 5.6VA
R944 R944
2 3 PWR_SENSE
3
PWR_SENSE
Q951 Q951
D999 D999
4.7K 1/8W 4.7K 1/8W
A1267 A1267
1N4148 1N4148
2 PWR_CTRL
1N4148 1N4148
1
CD_PWR_CTRL
D998 D998
D953 D953
R932 R932
1N5819 1N5819
PN902 PN902
4.7K 1/8W 4.7K 1/8W
8P/2.0mm 8P/2.0mm
R904 R904
R990 R990
12K 12K
1 2
IC955 IC955
12K 12K
278R33 278R33
+ + + +
W932 W932
NC NC
R933 R933
4.7K 1/8W 4.7K 1/8W
L947 L947
+12V
1 2 1
IC947 IC947 78R05 78R05
22uH 22uH
278R12 278R12
IC924 IC924
R931 R931
+ +
C931 C931
4.7K 1/8W 4.7K 1/8W
nc nc
USB_5.6V USB_5.6V
1 2 D996 D996
IC957 IC957
NC NC
278R05 278R05 D995 D995
+ + C933 C933
C922 C922
R956 R956 nc nc
470uF/16V 470uF/16V
NC NC
1K 1/8W 1K 1/8W
N O P Q
seguridad. Recambie únicamente con otras con el
mismo número de pieza.
voltímetro digital durante el modo de reproducción.
+5VM
3
+ +
C978 C978
100uF/16V 100uF/16V
Power Supply
MCD104&MCD204
R S T