LG 50UH5500 Service Manual page 97

Standard Repair Process
Error
symptom
Check in
Signal
put signa
input?
l
Check and fix
external device/cable
D. Function error
External device recognition error
Check technical
Y
information
- Fix information
- S/W Version
N
Established
date
Revised date
External Input and
N
Technical
Component
information?
Recognition error
Y
HDMI/
DVI, Optical
Fix in accorda
Recognition error
nce with tech
nical informati
on
14
14/16
Replace Main B/D
Replace Main B/D