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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
LGE Internal Use Only
START
NO
YES
Check the Waveform of
EMI filter
NO
Resoldering or replace EMI filter.
(FL301,FL303,FL304,FL307)
Does Camera work
properly ?
Replace Camera
Camera working well !
YES
CHECKING FLOW
NO
Check the Waveform of
Data pins on CN305
(nCAM_RESET, CAM_MCLK., CAM_PCLK
CAM_HSYNC, CAM_VSYNC,
CAM_I2C_DATA)
Replace Main board.
NO
Check the connection of
Camera module and CN305
Reassemble camera module to CN305
YES
NO
Check the Waveform of
all pins CN305
Replace CN305.
YES
YES
NO
Check the
voltages at pin 7, 8(TP1)
of U303 when CAM_LDO_EN
is high
Replace U303 and resolder FB306,R308
YES