LG 55LF5950 Service Manual page 44

Standard Repair Process
Error
LCD TV
symptom
☞A8
Check color by input
-External Input
-COMPONENT
-HDMI
☞A12
Check Test pattern
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Only for training and service purposes
A. Video error
Color error
※ Check and
replace Link
Y
Color
Cable
error?
(LVDS) and
contact
condition
N
Check error color
input mode
External Input/
Component
error
HDMI
error
Established
Revised date
Y
Color
Replace Main B/D
error?
N
Check
External device
external
/Cable
device and
normal
cable
Request repair
for external
device/cable
Check external External device
device and /Cable
cable normal
2015. 04. 23
date
2015. 04 .23
Y
Color
Replace module
error?
N
End
Y
Replace Main B/D
N
N
Y
Replace Main B/D
4/13
LGE Internal Use Only