the device firmware on Nokia X6. Oftentimes camera failure is cause by an interrupted firmware, restoring or flashing it back again will fix the problem. But
if that does not solved the problem you may then proceed to hardware repair troubleshooting, especially
if the device suffered from wet damaged and accidentaly dropped by the user.
The problem may possibly lies on faulty hardware components.
This solution below shows the main camera circuit on Nokia X6 and can be used as a guide to fix and repair camera hardware failure issues.
a) Try to replace a new camera replacement module.
b) Check and clean the camera connector.
c) Do supply voltage measurement on corresponding camera supply voltages (see solution above). You can check this voltages while trying to enable the camera in ON condition.
There are three voltage converters circuit that feeds voltage to enable the camera. This voltage ranges are as follows, 1.8volts, 2.8volts and 1.3volts DC voltages.
This voltages are converted by a DC to DC converters chip. The chips converts the Battery voltage which is 3.7 volts and drop it down or minimize it to 1.8, 2.8 and 1.3 DC voltage.
So, ensure that the battery supply voltage is properly feeds to each of the DC converter chips.
If the battery supply voltage is present and still there is no voltage output you can read on each chip, you may then check or replace the DC to DC converter IC's.
d) If all voltages reading is working good and no problems found, but the problem still exists, you may then proceed to rework or replace the Camera Accelerator IC this chip holds and control the camera data signals before it feeds to the application processor IC.