LG 34UC88 Service Manual page 12

2. No Screen on
Module Back Light On?
Y
Check Panel Power 10V (L408)
Check IC402 Output 10V
Y
Check Panel eDP AUX
P101(#17,18)
Y
Check eDP FFC Cable for Damage
or Open Conductors
Y
Replace T-Con Board or Module
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Only for training and service purposes
N
Check WLED_ENABLE High?
(IC700, IC701 - 3 PIN)
Y
Check LED Driver Output
(IC700, IC701 – 1,2,5,6 PIN)
N
Replace IC402 &
Recheck
Check IC200
N
Repair Scaler
N
Replace eDP Cable
- 12 -
N
Check IC204
Replace Main Scaler IC
N
Check IC700, IC701
Replace LED Driver IC
LGE Internal Use Only