LG 60LM6450 Service Manual page 55

Standard Repair Process
Error
LCD TV
symptom
Check
input
signal
Check and fix
external device/cable
D. Function error
External device recognition error
Check technical
Y
information
Signal
input? - Fix information
- S/W Version
N
Established
Revised date
N
External Input
Technical
And Component
information?
Recognition error
Y
RGB,HDMI/
DVI, Optical
Fix in
Recognition
accordance
error
with technical
information
2010. 12 .14
date
Replace Main B/D
Replace Main B/D
11/13