Only For Training And Service Purposes - LG GB220 Service Manual

4. TROUBLE SHOOTING
CHECKING FLOW
START
Is the connection of
CN300 with Camera ok ?
YES
Check the each voltage Level of
C336(1.8V), C330(2.8V), C329(1.5V) is right ?
(SWIF signal is high Level)
YES
Check the Waveform of
I2C_CLK, I2C_DATA ?
YES
Check the Waveform of
CAM_MCLK(26MHz) ?
YES
Check the Waveform of
Data pins on CN104 ?
YES
Check the Waveform of
EMI filter ?
YES
Does Camera work
properly ?
YES
Camera working well !
LGE Internal Use Only
LGE Internal Use Only
NO
Reassemble camera connector
with camera.
NO
Resoldering or Replace U303, 304
NO
Resoldering R305, R307
NO
Replace U101 or Change the board
NO
Replace Camera Module.
NO
Resoldering EMI filter.
(FL300, FL302,FL304)
NO
Replace U101 or Change the board
Figure 4-x.
Copyright © 2007 LG Electronics. Inc. All right reserved.

Only for training and service purposes

- 88 - Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes