Camera Trouble - LG U990 Service Manual

4. TROUBLE SHOOTING

4.13 Camera trouble

Camera control signals are generated by ZORAN (Multimedia Chip)
and directly connected with ZORAN.
KU990 has two cameras. The one is a 5 Mega Camera, the other is VGA camera.
5M START
Check the camera conn. and
reconnect the camera
Camera is OK?
NO
ZORAN output signal check
(MMP_CAM_RESET_N, MMP_
CAM_PWR_EN))
Check master clock
5M_CAM_MCLK
(CN600)
Check MMP_CAM_PCLK
(CN600)
Change the camera
Camera is OK
Change the Main board
LGE Internal Use Only
Yes
End
NO
Yes
NO
Change the LDO (U601, U602, U701, U900, U901)
Yes
NO
Change the Analog Switch (U604, U607)
Yes
Yes
No
Yes
End
NO
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Check the EMI/ESD filter
(FL600, FL601)
Yes
Change the Filter
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Only for training and service purposes
No