LG OLED55B9PUA

Screen
normal?
N
Y
Check external
device
connection
condition
Y
N
Check and
replace Link
Cable(Vx1)
Normal?
Y
N
Screen
normal?
Replace Main B/D
Replace
module
Check color condition by input
- External Input
- AV / Component
- HDMI
End
Vertical/Horizontal bar, residual image, light spot
Request repair
for external
device
Vertical/Horizontal bar, Residual image,
Light spot, External device color error
External device screen error-Color error
External
Input
error
Connect other external
device and cable
(Check normal operation of
External Input, HDMI/DVI
by connecting Jig, pattern
Generator ,Set-top Box etc.
N
Y
Replace
Main B/D /
Module
Screen
normal?
Check screen
condition by input
- External Input
- AV/Component
- HDMI
Request repair for
external device
HDMI
Connect other external
device and cable
(Check normal operation of
External Input, Component,
AV and HDMI by connecting
Jig, pattern Generator ,Set-
top Box etc.
Replace
Main B/D /
Module
Screen
normal?
N
Y
Check S/W Version
Y
N
Check
version
S/W Upgrade
Y
N
Normal
screen?
End
Y
N
Replace
Module
Screen
normal?
End
Established
date
Revised date
5/17
Error
symptom
Standard Repair Process
☞A6
☞ A7
5
☞A8
Check Test pattern
A. Video error
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