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LGE Internal Use Only
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Only for training and service purposes
4. TROUBLE SHOOTING
CHECKING FLOW
START
Is TP1,TP2 low
at KEY_BL_EN = high ?
NO
Check TP3
Are all LEDs
Working?
NO
YES
Check the soldering
each TP1,TP2 and TP4,TP5
Backlight will work properly.
NO
Replace or resolder
component
YES