LG 55SK9000PUA Service Manual page 78

Standard Repair Process Detail Technical Manual
Error symptom
Content
Press the P-ONLY  HDMI HOT  CH + or -
You can view 11 types of patterns using the CH+ or - key
Checking item : 1. Defective pixel
Adjustment Test pattern
2. Residual image
4.Video error (Classification of MODULE or Main-B/D!)
E. Etc
3. MODULE error (ADD-BAR,SCAN BAR..)
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