LG 77EG9700 Service Manual page 127

Standard Repair Process Detail Technical Manual
symptom
OLED TV
Content
You can view 10 types of patterns using the Yellow Key (When TV is Power Only Condition)
And then, You can change Pattern Pic using the Ch UP/DOWN,
Checking item : 1. Defective pixel
4.Video error (Classification of MODULE or Main-B/D!)
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Only for training and service purposes
Error
A. Video error_Color error
Adjustment Test pattern - ADJ Key
2. Residual image
Established
Revised
3. MODULE error (ADD-BAR,SCAN BAR..)
A8
2014.02.14
date
date
A8
LGE Internal Use Only