User Guide

Table of Contents
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
Image bit errors.....................................................................................................................................................................8–12
Camera troubleshooting flowcharts......................................................................................................................................8–13
Camera hardware troubleshooting.................................................................................................................................8–13
Camera hardware failure troubleshooting....................................................................................................................8–15
Bad image quality troubleshooting.................................................................................................................................8–16
List of Figures
Figure 160 Picture sharpness is worse on the edges than in the center......................................................................8–6
Figure 161 Blurring caused by shaking hands. Geometrical barrel distortion in the background.......................8–7
Figure 162 Near objects get skewed when taking images from a moving vehicle...................................................8–7
Figure 163 Noisy image taken in +70 degrees Celsius........................................................................................................8–8
Figure 164 Image taken against light......................................................................................................................................8–8
Figure 165 Flicker in an image; object illuminated by strong fluorescent light.........................................................8–9
Figure 166 A lens reflection effect caused by sunshine......................................................................................................8–9
Figure 167 Good image taken indoors..................................................................................................................................8–10
Figure 168 Good image taken outdoors...............................................................................................................................8–10
Figure 169 Effects of dust on optical path............................................................................................................................8–11
Figure 170 Bit errors caused by JPEG compression............................................................................................................8–13
RM-51
Camera module troubleshooting Nokia Customer Care
9238460 (Issue 1) Company Confidential Page 8–3
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