Nokia 3230 - Smartphone 6 MB, Руководство по обслуживанию, Страница: 211 / 276

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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