User Guide

Table of Contents
Introduction to camera module troubleshooting ..............................................................................................8–5
The effect of image taking conditions on image quality...................................................................................8–6
Camera construction........................................................................................................................................... 8–10
Image quality analysis ....................................................................................................................................... 8–12
Testing for dust in camera module .............................................................................................................. 8–12
Testing camera image sharpness................................................................................................................. 8–13
Dirty camera lens protection window ......................................................................................................... 8–13
Image bit errors ............................................................................................................................................. 8–14
Camera troubleshooting flowcharts.................................................................................................................. 8–15
Camera hardware failure message troubleshooting.................................................................................. 8–15
Camera baseband hardware troubleshooting ............................................................................................ 8–16
Front camera viewfinder troubleshooting .................................................................................................. 8–17
Front camera bad image quality troubleshooting ..................................................................................... 8–18
List of Figures
Figure 48 Blurred image. Target too close. .........................................................................................................8–6
Figure 49 Blurring caused by shaking hands ......................................................................................................8–7
Figure 50 Near objects get skewed when taking images from a moving vehicle...........................................8–7
Figure 51 Noisy image taken in +70 degrees Celsius .........................................................................................8–8
Figure 52 Image taken against light....................................................................................................................8–8
Figure 53 Flicker in an image; object illuminated by strong fluorescent light................................................8–9
Figure 54 A lens reflection effect caused by sunshine........................................................................................8–9
Figure 55 Good image taken indoors................................................................................................................ 8–10
Figure 56 Good image taken outdoors ............................................................................................................. 8–10
Figure 57 Camera module cross section and assembly principle................................................................... 8–11
Figure 58 Camera module bottom view including serial numbering............................................................ 8–11
Figure 59 Effects of dust on optical path .......................................................................................................... 8–12
Figure 60 Image taken with clean protection window................................................................................... 8–14
Figure 61 Image taken with greasy protection window ................................................................................ 8–14
Figure 62 Bit errors caused by JPEG compression............................................................................................ 8–14
RM-208
Camera Module Troubleshooting Nokia Customer Care
Issue 1 COMPANY CONFIDENTIAL Page 8 –3
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