Nokia 2630 RM-298, Руководство по обслуживанию

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Table of Contents
Introduction to camera module troubleshooting .............................................................................................. 5–5
The effect of image taking conditions on image quality ................................................................................... 5–6
Camera construction ........................................................................................................................................... 5–10
Dynamic camera configuration .......................................................................................................................... 5–12
Image quality analysis ....................................................................................................................................... 5–13
Testing for dust in camera module .............................................................................................................. 5–13
Testing camera image sharpness ................................................................................................................. 5–14
Dirty camera lens protection window ......................................................................................................... 5–15
Image bit errors ............................................................................................................................................. 5–15
Camera troubleshooting flowcharts .................................................................................................................. 5–16
Camera hardware failure message troubleshooting .................................................................................. 5–16
Camera baseband HW troubleshooting ....................................................................................................... 5–18
Camera viewfinder troubleshooting ............................................................................................................ 5–19
Bad camera image quality troubleshooting ................................................................................................ 5–20
List of Tables
Table 7 Camera specifications ............................................................................................................................ 5–10
List of Figures
Figure 90 Blurred image. Target too close. ......................................................................................................... 5–6
Figure 91 Blurring caused by shaking hands ...................................................................................................... 5–7
Figure 92 Near objects get skewed when taking images from a moving vehicle ........................................... 5–7
Figure 93 Noisy image taken in +70 degrees Celsius ......................................................................................... 5–8
Figure 94 Image taken against light .................................................................................................................... 5–8
Figure 95 Flicker in an image; object illuminated by strong fluorescent light ................................................ 5–9
Figure 96 A lens reflection effect caused by sunshine ........................................................................................ 5–9
Figure 97 Good image taken indoors ................................................................................................................ 5–10
Figure 98 Good image taken outdoors ............................................................................................................. 5–10
Figure 99 Camera module cross section and assembly principle ................................................................... 5–11
Figure 100 Camera module bottom view including serial numbering .......................................................... 5–12
Figure 101 DCC data update .............................................................................................................................. 5–13
Figure 102 Effects of dust on optical path ........................................................................................................ 5–14
Figure 103 Image taken with clean protection window ................................................................................. 5–15
Figure 104 Image taken with greasy protection window .............................................................................. 5–15
Figure 105 Bit errors caused by JPEG compression .......................................................................................... 5–16
RM-298; RM-299
Camera Module Troubleshooting
Issue 1 COMPANY CONFIDENTIAL Page 5 –3
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