LG 55EC9300 Repair Manual page 84

Standard Repair Process
LCD TV
☞A6
Check color by input
-External Input
-COMPONENT
-AV
-HDMI HDMI
☞A8
Check Test pattern
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A. Video error
Error
symptom
☞ A7 ☞ A7
※ Check
and replace
Y
Color Link Cable
error? (EPI) and
contact
N N
condition
Check error
color input
mode
External Input/
Component
error
HDMI
error
Color error
Y
Color
Replace Main B/D
error?
N
Check
external
device and
cable
Check external
device and
cable
4
Established
2013.01.31
date
Revised date
Y
Color
Replace module
error?
N N
End
External device
Y
/Cable Replace Main B/D
normal
N
Request repair
for external
device/cable
N
Y
External device
Replace Main B/D
/Cable
normal
4/16
LGE Internal Use Only