Only For Training And Service Purposes - LG KF305 Service Manual

4. TROUBLE SHOOTING
CHECKING FLOW
START
Is the connection of
CN702 with Camera connector ok ?
YES
Is the connection of
CN801 with CN701 connector ok ?
YES
Is the connection of
CN803 with CN500 connector ok ?
YES
Check the each voltage Level of
TP1(1.8V), TP2(2.8V), TP3(2.8V) is right ?
(CAM_LDO_EN signal is high Level)
YES
Check the Waveform of
I2C_CLK, I2C_DATA ?
YES
Check the Waveform of
CAM_MCLK(13MHz) ?
YES
Check the Waveform of
Data pins on CN701 ?
YES
Check the Waveform of
EMI filter ?
YES
Does Camera work
properly ?
YES
Camera working well !
LGE Internal Use Only
Reassemble KEY PCB
NO
with camera connector.
Reassemble FPCB
NO
with KEY PCB connector
NO
Reassemble FPCB with Main connector
NO
Resoldering or Replace U500
NO
Resoldering TP4, TP5
NO
Replace U101 or Change the board
NO
Replace Camera Module.
NO Resoldering EMI filter.
(TP6, TP7, TP8, TP9)
NO
Replace U101 or Change the board
Copyright © 2009 LG Electronics. Inc. All right reserved.
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Only for training and service purposes