Nokia n80 User Manual page 279

RM-91; RM-92
Camera Module Troubleshooting
Introduction to camera module troubleshooting...............................................................................................8-5
The effect of image taking conditions on image quality...................................................................................8-6
Image quality analysis ........................................................................................................................................8-10
Testing for dust in camera module...............................................................................................................8-10
Testing camera image sharpness..................................................................................................................8-11
Dirty camera lens protection window..........................................................................................................8-12
Image bit errors..............................................................................................................................................8-12
Camera troubleshooting flowcharts...................................................................................................................8-14
Main camera troubleshooting flowchart......................................................................................................8-14
Back camera troubleshooting........................................................................................................................8-15
Camera hardware failure message troubleshooting..............................................................................8-15
Camera baseband HW troubleshooting...................................................................................................8-16
Camera viewfinder troubleshooting........................................................................................................8-17
Bad camera image quality troubleshooting...........................................................................................8-18
Front camera troubleshooting.......................................................................................................................8-19
Front camera hardware failure message troubleshooting....................................................................8-19
Front camera HW baseband troubleshooting.........................................................................................8-20
Front camera viewfinder troubleshooting..............................................................................................8-22
Front camera bad image quality troubleshooting.................................................................................8-23
Flash LED troubleshooting...................................................................................................................................8-24
Introduction to flash LED troubleshooting...................................................................................................8-24
Flash LED and image taking conditions........................................................................................................8-24
Flash LED construction....................................................................................................................................8-28
Analysing image quality.................................................................................................................................8-29
Possible faults in image quality................................................................................................................8-29
Testing flash module functionality..........................................................................................................8-29
Testing image colours with flash.............................................................................................................8-30
Testing flash power...................................................................................................................................8-30
Flash LED troubleshooting flowcharts..........................................................................................................8-31
Bad image quality when using flash LED.................................................................................................8-31
Flash LED indicator mode troubleshooting.............................................................................................8-31
Flash LED HW baseband troubleshooting................................................................................................8-31
List of Figures
Figure 67 Blurred image. Target too close..........................................................................................................8-6
Figure 68 Blurring caused by shaking hands.......................................................................................................8-7
Figure 69 Near objects get skewed when taking images from a moving vehicle...........................................8-7
Figure 70 Noisy image taken in +70 degrees Celsius.........................................................................................8-8
Figure 71 Image taken against light; the actual object is dark.........................................................................8-8
Figure 72 Flicker in an image; uniform object illuminated by strong fluorescent light.................................8-9
Figure 73 A lens reflection effect caused by sunshine........................................................................................8-9
Figure 74 Good image taken indoors.................................................................................................................8-10
Figure 75 Good image taken outdoors..............................................................................................................8-10
Figure 76 Effects of dust on optical path...........................................................................................................8-11
Figure 77 Image taken with clean protection window....................................................................................8-12
Figure 78 Image taken with greasy protection window.................................................................................8-12
Figure 79 Bit errors caused by JPEG compression.............................................................................................8-13
Figure 80 Example of a good quality image taken with the flash LED...........................................................8-24
Figure 81 overexposed image.............................................................................................................................8-25
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