LG 55UM7450PVA Service Manual page 76

Standard Repair Process Detail Technical Manual
symptom
Content
Check items afer Main B/D(Model Number D/L, White Balance)
1. Press the Service remote control instart Key.
2. Press the Service remote control ADJ Key.
Error
E. Etc
Check items after Main B/D replacement
Established
date
Revised
date
No.7 Select Model Number D/L
after checking the ID label on the back cover.
No.11 Select White Balance
- Record the R, G, B (GAIN, Cut) value of the
color temperature before main board
replacement.
After replacing the main board, key in the
recorded value.
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- Key in the model name and serial number
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