LG 42LB550T Service Manual

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
COMP2_Pr+
AV2_CVBS_DET
R1714
10K
R1721
12K
R1715
10K
R1719
12K
AV2
R1713
1K
R1704
470K
R1700
470K
AV2
VA1702
5.6V
OPT
R1712
1K
COMP2_Pb+
+3.3V_Normal
COMP2_DET
R1701
470K
AV2
R1705
75
R1709
10K
COMP2_R_IN
R1703
470K
VA1703
5.6V
OPT
AV2_R_IN
VA1705
5.6V
OPT
VA1704
5.6V
AV2_LR_ZENER
C1701
1000pF
50V
OPT
R1716
10K
AV2
R1710
10K
C1704
1000pF
50V
OPT
R1706
75
COMP2_L_IN
R1711 1K
AV2
+3.3V_Normal
+3.3V_Normal
VA1700
5.6V
COMP_LR_ZENER
VA1706
5.6V
AV2_LR_ZENER
R1718
12K
AV2
R1708
10K
AV2
SC1/AV2_CVBS_IN
C1703
47pF
50V
AV2
COMP2_Y+/AV_CVBS_IN
C1702
1000pF
50V
OPT
R1720
12K
AV2_L_IN
R1717
10K
AV2
VA1701
5.6V
COMP_LR_ZENER
AV_CVBS_DET
C1705
1000pF
50V
OPT
ZD1704
COMP_Y_ZENER_ROHM
ZD1700
COMP_Pr_ZENER_ROHM
ZD1705
COMP_Y_ZENER_ROHM
ZD1707
AV2_CVBS_ZENER_ROHM
ZD1706
AV2_CVBS_ZENER_ROHM
ZD1703
COMP_Pb_ZENER_ROHM
ZD1702
COMP_Pb_ZENER_ROHM
ZD1701
COMP_Pr_ZENER_ROHM
ZD1707-*1
AV2_CVBS_ZENER_KEC
ZD1706-*1
AV2_CVBS_ZENER_KEC
ZD1703-*1
COMP_Pb_ZENER_KEC
ZD1702-*1
COMP_Pb_ZENER_KEC
ZD1701-*1
COMP_Pr_ZENER_KEC
ZD1700-*1
COMP_Pr_ZENER_KEC
ZD1705-*1
COMP_Y_ZENER_KEC
ZD1704-*1
COMP_Y_ZENER_KEC
R1707
75
1%
1608
R1702
75
1%
AV2
1608
DTV/MNT_VOUT
R1723
75
CVBS_OUT_TEST
R1724
0
CVBS_OUT_TEST
JK1702
PPJ245N2-01
COMP_AV1_YG
5A
[GN/YL]O-SPRING
6A
[GN/YL]E-LUG
4A
[GN/YL]CONTACT
5B
[BL]O-SPRING
7C
[RD1]E-LUG-S
5C
[RD1]O-SPRING
4C
[RD1]CONTACT
5D
[WH]O-SPRING
4E
[RD2]CONTACT
5E
[RD2]O-SPRING
6E
[RD2]E-LUG
JK1702-*1
PPJ245-01
COMP_AV1_G
6A
[GN]C-SPRING
7A
[GN]E-LUG
4A
[GN]CONTACT
5B
[BL]C-SPRING
8C
[RD1]E-LUG-S
6C
[RD1]C-SPRING
4C
[RD1]CONTACT
5D
[WH]C-SPRING
4E
[RD2]CONTACT
6E
[RD2]C-SPRING
7E
[RD2]E-LUG
JK1701-*1
PPJ248-01
COMP_AV1/2_G
6D
[GN]C-SPRING
7D
[GN]E-LUG
4D
[GN]CONTACT
5E
[BL]C-SPRING
8F
[RD1]E-LUG-S
6F
[RD1]C-SPRING
4F
[RD1]CONTACT
5G
[WH1]C-SPRING
4H
[RD2]CONTACT
6H
[RD2]C-SPRING
7H
[RD2]E-LUG
7A
[YL]E-LUG
6A
[YL]C-SPRING
4A
[YL]CONTACT
5B
[WH2]C-SPRING
4C
[RD3]CONTACT
6C
[RD3]C-SPRING
7C
[RD3]E-LUG
JK1701
PPJ248-21
COMP_AV1/2_YG
5D
[YL/GN]O-SPRING
6D
[YL/GN]E-LUG
4D
[YL/GN]CONTACT
5E
[BL]O-SPRING
7F
[RD1]E-LUG-S
5F
[RD1]O-SPRING
4F
[RD1]CONTACT
5G
[WH1]O-SPRING
4H
[RD2]CONTACT
5H
[RD2]O-SPRING
6H
[RD2]E-LUG
6A
[YL]E-LUG
5A
[YL]O-SPRING
4A
[YL]CONTACT
5B
[WH2]O-SPRING
4C
[RD3]CONTACT
5C
[RD3]O-SPRING
6C
[RD3]E-LUG
2013.08.15L14_S7LR(M1A)
REAR_JACK_NON_EU
COMPONENT
&
AV1
17
AV2
COMPONENT & AV1(COMMON), AV2
Size Check !!!
Size Check !!!
* One Ton Color Jack - Yellow/Green
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

LG 42LB550T Specifications

General

Brand	LG
Model	42LB550T
Category	LED TV
Language	English