Blu Touchbook 7.0 3G, Service Manual

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Trouble 4:LCD is not light or appears in white color
Possible Cause:
1) check
if the fpc between LCD and main board is ok
2) change the LCD module
3) check if the EMI comments L904---L908is ok
4) check the power VCC33_LCD and LED+,
LED- are in proper state
5)
Trouble 5: Nonfunctioning Camera
Possible Cause:
1) check CN1501 is ok
2) check the power VCAMA_PMU,
VCAMD_PMU, VCAMD_IO_PMU is
in proper level
3) change the bad camera
6) Trouble 6:Vibrator is not worked
Possible Cause:
1) Check the power VIBR_PMU is in proper level
2) Change another Vibrator
7) Trouble 7:G-sensor is not worked
Possible Cause:
1) Check the power VDD18_PMU is in proper state
2) Change U1602