Nokia RM-57 Service Manual page 325

RM-57/58
Camera Module Troubleshooting Nokia Customer Care
Flash LED indicator mode troubleshooting
For checking the indicator mode functionality, force the camera to record a video clip and monitor the flash led
at the same time. The flash LED should work with very low brightness constantly during the video recording.
Flash LED HW baseband troubleshooting
If there are problems in the flash LED driver circuit, the testing procedure is complicated, because the driver
circuit output cannot be reliably measured without the load (LED). Load (LED) is always disconnected from the
output when the phone is disassembled.
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