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CHECKING FLOW
START
Is the connection of
CN102 with LCD connector ok ?
YES
Is the connection of
CN301 with CN103 connector ok ?
YES
Check the Voltage Level of
TP1 is about Battery voltage ?
(SWIF signal is high Level)
YES
Check the Waveform of
EMI filter (TP6, TP7, TP8)?
YES
Check the Waveform of
Data pins on CN102 (
TP3, TP4, TP5)?
YES
Does LCD work
properly ?
YES
LCD working well !
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Only for training and service purposes
4. TROUBLE SHOOTING
NO
Reassemble LCD connector
NO
Reassemble FPCB with Main connector
NO
Resoldering or Replace U301
NO
Resoldering EMI filter.
(FL301,FL302,FL303)
NO
Replace Main FPCB
NO
Replace LCD module
84/136
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4. TROUBLE SHOOTING
LGE Internal Use Only
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