Nokia RM-484 Service Manual page 137

RM-484; RM-485; RM-486
Camera Module Troubleshooting
Introduction to camera module troubleshooting ..............................................................................................5-5
The effect of image taking conditions on image quality ...................................................................................5-6
Image quality analysis
Possible faults in image
Testing for dust in camera module
Testing camera image sharpness
Effects of dirty or defective camera lens protection
Faulty pixels in images
Flash photography problems
Main (back) camera troubleshooting
Image or video capture troubleshooting
IVE basic checks ..............................................................................................................................................
No recognizable viewfinder image
Bad image quality troubleshooting
Flash troubleshooting....................................................................................................................................
Accelerometer troubleshooting.........................................................................................................................
List of Figures
Figure 36 Only center part of image is in focus due to limited depth of focus ...............................................5-6
Figure 37 Blurring caused by shaking hands ......................................................................................................5-7
Figure 38 Noisy image taken in +70 degrees Celsius .........................................................................................5-7
Figure 39 Image taken against light ....................................................................................................................5-8
Figure 40 Flicker in an image; object illuminated by strong fluorescent light................................................5-8
Figure 41 A lens reflection effect caused by sunshine........................................................................................5-9
Figure 42 Good image taken indoors...................................................................................................................5-9
Figure 43 Good image taken outdoors ................................................................................................................5-9
Figure 44 Effects of dust on optical path
Figure 45 Image taken with clear protection window
Figure 46 Image taken with greasy protection window
Figure 47 Image of point light sources taken with a clean protective
Figure 48 Image of point light sources taken with a dirty (finger print) protective window
Figure 49 Enlargement of a hot
Figure 50 Light from the flash has reflected on particles in front of the camera
Issue 1
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