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4. TROUBLE SHOOTING
CHECKING FLOW
START
Is th e connection of
FPCB with co nnector o n
PCB(CN301) ok ?
YES
Check t he soldering o f
CN301 ?
YES
Check t he
V_IO voltage is 1.8 V ?
YES
Check t he si gnals of
LCD Interface from U102
YES
Does LCD w ork
prop erly ?
YES
LCD wo rking well !
LGE Internal Use Only
NO
Reassem ble FPCB with CN100connec tor
NO
Re-solderi ng CN301
NO
Check t he U101
NO
Check t he U102
NO
Replace LCD module
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Only for training and service purposes
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