Nokia N81 - Table of Contents

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Table of Contents

Camera construction..............................................................................................................................................5–5

Main camera construction.....................................................................................................................................5–5

Secondary camera construction ...........................................................................................................................5–6

Camera viewfinder troubleshooting ....................................................................................................................5–7

Bad camera image quality troubleshooting........................................................................................................5–8

Main camera troubleshooting...............................................................................................................................5–9

Main camera baseband HW troubleshooting................................................................................................... 5–10

Secondary camera troubleshooting .................................................................................................................. 5–11

Secondary camera baseband HW troubleshooting.......................................................................................... 5–12

Flash LED troubleshooting.................................................................................................................................. 5–13

Introduction to flash LED troubleshooting.................................................................................................. 5–13

Flash LED and image taking conditions ....................................................................................................... 5–13

Flash LED construction................................................................................................................................... 5–18

Analysing image quality................................................................................................................................ 5–18

Possible faults in image quality............................................................................................................... 5–18

Testing flash module functionality ......................................................................................................... 5–18

Testing image colours with flash ............................................................................................................ 5–19

Testing flash power .................................................................................................................................. 5–19

Camera flash LED troubleshooting ............................................................................................................... 5–20

Indicator LED troubleshooting........................................................................................................................... 5–21

List of Figures

Figure 43 Camera module cross section and assembly principle......................................................................5–5

Figure 44 Main camera module bottom view including serial numbering......................................................5–5

Figure 45 Front camera module cross section and assembly principle............................................................5–6

Figure 46 Example of a good quality image taken with the flash LED .......................................................... 5–13

Figure 47 overexposed image............................................................................................................................ 5–14

Figure 48 Dark and noisy image ........................................................................................................................ 5–15

Figure 49 Shaken image ..................................................................................................................................... 5–16

Figure 50 Camera white balance failure and overexposure ........................................................................... 5–17

Figure 51 Color difference between flash colour limit samples..................................................................... 5–17

Figure 52 Mechanical construction of the flash LED module .......................................................................... 5–18

RM-179; RM-223

Camera Module Troubleshooting

Issue 1 COMPANY CONFIDENTIAL Page 5 –3