LG OLED77Z19LA - Page 36

Check technical
information
- Fix information
- S/W Version
N
Y
Technical
information?
Check
input
signal
Signal
input?
Y
N
External Input
And Component
Recognitionerror
Check and fix
external device/cable
HDMI/
DVI, Optical
Recognition
error
Replace Main B/D
Replace Main B/D
Fix in
accordance
with technical
information
D. Function error
External device recognition error
Established
date
Revised date
15/18
Error
symptom
Standard Repair Process
15
Copyright © 2021 LG Electronics. Inc. All rights reserved.
Only for training and service purposes.