Read LG 50PT490B-SA / 50PT490B-SD (CHASSIS:PB11K) Service Manual online
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THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
D1000
5.6V
ADMC5M03200L_AMODIODE
R1092
82
82
READY
JK1003
JST1223-001
1
GND
2
VCC
3
VINPUT
4
FIX_POLE
R1065
0
0
D1022
30V
READY
R1040
10K
10K
R1069
0
0
COMP1_Pr-
COMP2_Pr-
D1021
C1006
10pF
50V
10pF
50V
READY
D1019
R1001
75
R1002
0
COMP2_LIN
R1089
12K
R1088
12K
12K
R1021
0READY
SIDE_RIN
JK1000
PPJ239-01
5J
[GN2]O-SPRING
6J
[GN2]E-LUG
4J
[GN2]CONTACT
7K
[BL2]E-LUG-S
5K
[BL2]O-SPRING
7L
[RD2]E-LUG-S
5L
[RD2]O-SPRING_1
5M
[WH2]O-SPRING
4N
[RD2]CONTACT
5N
[RD2]O-SPRING_2
6N
[RD2]E-LUG
6D
[GN1]E-LUG
5D
[GN1]O-SPRING
4D
[GN1]CONTACT
7E
[BL1]E-LUG-S
5E
[BL1]O-SPRING
7F
[RD1]E-LUG-S
5F
[RD1]O-SPRING_1
4F
[RD1]CONTACT_1
5G
[WH1]O-SPRING
4H
[RD1]CONTACT_2
5H
[RD1]O-SPRING_2
6H
[RD1]E-LUG
R1006
0
0
COMP2_RIN
R1044
75
R1058
1K
R1099
0READY
D1004
30V
READY
R1071
0
0
C1007
1000pF
50V
1000pF
50V
R1060
1K
SIDE_LIN
C1024
10uF
16V
10uF
16V
COMP1_Pb+
C1023
0.1uF
50V
0.1uF
50V
R1004
75
+3.3V
C1009
0.47uF
25V
READY
R1083
3.6K
READY
R1086
10K
10K
R1097
270
D1003
30V
READY
AV_RIN_COM1
+5V
C1003
10pF
50V
10pF
50V
READY
R1094
12K
12K
R1003
0
R1075
470K
SPDIF_OUT
+3.3V
COMP1_Y+
C1005
10pF
50V
10pF
50V
READY
R1096
0 READY
C1001
10pF
50V
10pF
50V
READY
R1077
10K
COMP1_DET
R1095
12K
COMP2_Y+
R1074
75
D1001
5.6V
C1011
1000pF
50V
1000pF
50V
COMP2_Pb-
IC1000
NL17SZ00DFT2G
READY
3
GND
2
B
4
Y
1
A
5
VCC
COMP2_Pb+
R1005
0
C1002
10pF
50V
10pF
50V
READY
R1067
75
C1004
10pF
50V
10pF
50V
READY
AV_CVBS_DET
R
1
0
3
8
4
7
0
K
R1080
1K
1K
D1020
30V
COMP1_Pr+
R1079
470K
R1098
0
0
READY
D1010
5.6V
R1042
12K
+5V
D1006
30V
30V
READY
Q1000
2SC3052
2SC3052
READY
E
B
C
D1011
5.6V
R1039
10K
10K
D1005
30V
READY
C1015
820pF
820pF
R
1
0
3
7
4
7
0
K
AV_LIN_COM1
R1019
1K
1K
C1000
100pF
50V
READY
COMP1_Pb-
Q1001
2SC3052
2SC3052
READY
E
B
C
R1055
100
100
D1002
30V
30V
READY
COMP2_DET
R1073
75
R1078
470K
470K
R1061
10K
C1014
820pF
820pF
D1008
5.6V
R1093
82
READY
+3.3V
+5V
AV_CVBS
R1082
10K
10K
R1043
12K
R1076
75
SIDE_CVBS_IN
C1022
22pF
22pF
R1051
100
100
R1072
470K
470K
R1059
10K
COMP2_Pr+
JK1002
PPJ235-01
4A
[YL]O-SPRING
5A
[YL]E-LUG
3A
[YL]CONTACT
4B
[WH]O-SPRING
3C
[RD]CONTACT
4C
[RD]O-SPRING
5C
[RD]E-LUG
C1010
1000pF
50V
1000pF
50V
D1009
5.6V
R1084
4.7K
READY
C1016
47pF
50V
47pF
50V
SIDE_CVBS_DET
C1013
0.1uF
16V
0.1uF
16V
READY
COMP1_Y-
R1036
10K
+5V
R1081
10K
10K
R1070
0
0
R1020
270
READY
C1008
1000pF
50V
1000pF
50V
+3.3V
COMP2_Y-
R1062
1K
1K
D1012
5.6V
5.6V
R1085
10K
10K
D1007
30V
30V
READY
10 14
CVBS/COM1/2 JACK
EAX63425902(5)
AV_CVBS_DET
LOW
RESULT
HIGH
AV_CVBS
HIGH
LOW
NAND
GATE
GATE
HIGH
LOW
COMP1_DET
SPDIF
SIDE CVBS
LOW
COMP1_DET
HIGH
2010.10.21
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