Read LG 42LM3400 / 42LM340S / 42LM340T (CHASSIS:LD21C) Service Manual online
Color
error?
Y
N
※ Check
and replace
Link Cable
(LVDS) and
contact
condition
and replace
Link Cable
(LVDS) and
contact
condition
Y
N
Replace Main B/D
Color
error?
Check error
color input
mode
color input
mode
Check color by input
-External Input
-COMPONENT
-External Input
-COMPONENT
-
RGB
-
HDMI/DVI
Y
External device
/Cable
normal
External Input/
Component
error
Check
external
device and
cable
external
device and
cable
Y
External device
/Cable
normal
RGB/
HDMI/DVI
error
Check external
device and
cable
device and
cable
Replace Main B/D
Replace Main B/D
N
N
A. Video error
Color error
☞A7
N
Y
End
Replace module
Request repair
for external
device/cable
Color
error?
Check Test pattern
☞A10
☞ A8/ A9
Standard Repair Process
Established
date
Revised date
5/14
LCD TV
Error
symptom
2012. 01 .14
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