LG 43LT340C0TB Service Manual page 62

Standard Repair Process Detail Technical Manual
symptom
Content
Error
Adjustment Test pattern - ADJ Key
P-ONLY  HDMI HOT(Yellow button)  CH '+' or '-'
You can view 11 types of patterns using the ADJ Key
Checking item :
1. Defective pixel
2. Residual image
3. MODULE error (ADD-BAR,SCAN BAR..)
4. Video error (Classification of MODULE or Main-B/D!)
E.Etc
A19
Established
date
Revised
date
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Only for training and service purposes
A19