LG 23MA73D-PUP - Page 14

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LGE Internal Use Only
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Only for training and service purposes
2. No Picture
Module
Back Light On ?
Check WLED_ENABLE high
R1127
Check IC101
Replace Main Scaler IC
N N
Check Panel clock
P601(#10,11,22,23)
Check IC101
Repair Main B/D
N
Check Panel power
P1002(#1,2,3) 5V
IC807 Output 5V
Replace IC807
N
Y
Replace T-con
Board or module
Check FFC Cable for damage
or open conductors.
Replace Cable
N
Y
Y
Y
Check LED Driver output
(P1101/P1102 #1,2,5,6)
Check LED Driver IC1100
Replace LED Driver IC
N
Y