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
Check screen
condition by input
-External Input
-Component
-RGB
-HDMI/DVI
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
Module
Established
date
Revised date
6/14
Standard Repair Process
☞
A7
☞
A8/ A9
Check Test pattern
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
Error symptom
Copyright © 2015 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only
Summary of Contents for 49LF550T
Page 38: ......
