LG 37LV370S Service Manual page 45

Standard Repair Process
Error
LCD TV
symptom
Vertical/Horizontal bar, residual image, light spot
Check color condition by input
-External Input
-Component
-RGB
-HDMI/DVI
Check Test mode
RGB screen
External device screen error-Color error
Check
Check S/W Version
version
S/W Upgrade
Normal
screen?
End
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A. Video error
Vertical/Horizontal bar, residual image,
light spot, external device color error
Y
Screen Check external
normal? device
connection
condition
N
Replace
module
Check screen
condition by
N
input
-External Input
-Component
-RGB
Y
-HDMI/DVI
N
Y
Established
date
Revised date
☞154
Y
Check and
Normal?
replace Link
Cable
N
Request
repair for
external
device
External
Connect other external
Input
device and cable
error
(Check normal operation of
External Input, Component,
Component
RGB and HDMI/DVI by
error connecting Jig, pattern
Generator ,Set-top Box etc.
RGB
Connect other external
error
device and cable
(Check normal operation of
External Input, Component,
HDMI/
RGB and HDMI/DVI by
DVI
connecting Jig, pattern
Generator ,Set-top Box etc.
Electronics 6-3
2008. 2 . 1
N
Screen
Replace Main B/D
normal?
Y
End
N
Screen
Replace
normal?
Main B/D
Y
Request repair for
external device
Y
N
Screen
Replace Main B/D
normal?
LGE Internal Use Onl
5/13