Nokia RM-596 - Table of Contents

Table of Contents
Introduction to camera module troubleshooting ............................................................................................. 5–5
The effect of image taking conditions on image quality.................................................................................. 5–6
Image quality analysis ...................................................................................................................................... 5–10
Possible faults in image quality................................................................................................................... 5–10
Testing for dust in camera module ............................................................................................................. 5–11
Testing camera image sharpness................................................................................................................ 5–12
Effects of dirty or defective camera lens protection window................................................................... 5–13
Faulty pixels in images ................................................................................................................................. 5–14
Flash photography problems....................................................................................................................... 5–15
Main (back) camera troubleshooting flowcharts............................................................................................ 5–16
No recognizable viewfinder image ............................................................................................................. 5–16
Bad image quality troubleshooting ............................................................................................................ 5–17
Main camera troubleshooting...................................................................................................................... 5–18
Secondary camera troubleshooting ................................................................................................................. 5–20
Flash troubleshooting........................................................................................................................................ 5–22
List of Figures
Figure 29 Only center part of image is in focus due to limited depth of focus .............................................. 5–6
Figure 30 Blurring caused by shaking hands ..................................................................................................... 5–7
Figure 31 Near objects get skewed when taking images from a moving vehicle.......................................... 5–7
Figure 32 Noisy image taken in +70 degrees Celsius ........................................................................................ 5–8
Figure 33 Image taken against light................................................................................................................... 5–8
Figure 34 Flicker in an image; object illuminated by strong fluorescent light............................................... 5–9
Figure 35 A lens reflection effect caused by sunshine....................................................................................... 5–9
Figure 36 Good image taken indoors............................................................................................................... 5–10
Figure 37 Good image taken outdoors ............................................................................................................ 5–10
Figure 38 Effects of dust on optical path ......................................................................................................... 5–11
Figure 39 Image taken with clear protection window .................................................................................. 5–13
Figure 40 Image taken with greasy protection window ............................................................................... 5–13
Figure 41 Image of point light sources taken with a clean protective window.......................................... 5–14
Figure 42 Image of point light sources taken with a dirty (finger print) protective window ................... 5–14
Figure 43 Enlargement of a hot pixel............................................................................................................... 5–15
Figure 44 Light from the flash has reflected on particles in front of the camera ....................................... 5–15
RM-596
Camera Module Troubleshooting
Issue 2 COMPANY CONFIDENTIAL Page 5 – 3
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