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857 Front Camera fail - BMMI
FrontCam_Check Fail
This fail means I2C bus is normal but no preview.
1. Check
U1201 (RK)
2. Demount the shielding U3002 and check the polarity and appearance (cracks,
soldering) of
3. Power on the board with camera connected. Type in
/data/data/CameraTest 1 1 10
VREG_CORE_ISP, V_ISP_1V0, ISPAVDD_1V8, V_ISP_DDR_1V2.
source IC
PU8202, PU9507, PR9544, PU9509
if any power net found unusual.
4. If all power nets are normal when CAM is on, please check if
R1226
are all mounted.
5. If nothing wrong with items above, please remount
U1201 (RK)
when remount isn't effective.
6. Remount
U0201 (SoC)
and
U0201 (SoC)
U1201
(RK)；
when changing
by X-ray；
to preview front CAM. Probe power net of ISP
for cracks, polarity or SMT issues
U1201 (RK)
cmd: adb shell
Check the power
R1227, R1224,
U1201
(RK), or change
isn't effective.
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