N
Y
Check external
device
connection
condition
Y
N
Y
Replace
module
Check color condition by input
Vertical/Horizontal bar, residual image, light spot
Request repair
for external
device
A. Video error
Vertical / Horizontal bar, residual image,
light spot, external device color error
☞
A10
External device screen error-Color error
Connect other external
device and cable
(Check normal operation of
External Input, Component
and HDMI by connecting
Jig, pattern Generator,
Set-top Box etc.
N
Y
Replace
Main B/D
Request repair for
external device
Connect other external
device and cable
(Check normal operation
of External Input,
Component, HDMI by
connecting Jig, pattern
Generator ,Set-top Box
etc.
Replace
Main B/D
N
Y
Check S/W Version
Y
N
S/W Upgrade
Y
N
Y
N
Replace Main B/D
Replace
Module
Established
date
Revised date
6/14
Error
symptom
Standard Repair Process
☞
A7
☞
A8/ A9
N
End
Screen
normal
Screen
normal
Screen
normal
Screen
normal
Screen
normal
Screen
normal
End
End
Check
Version
Normal
Screen
External
Input
error
Compo
nent
error
HDMI
error
Check screen
condition by input
-External Input
-HDMI/DVI
Copyright © 2017 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Summary of Contents for 43UV770M
Page 56: ......
