Phone Display - Nokia RM-484 Service Manual

RM-484; RM-485; RM-486
Camera Module Troubleshooting
Figure 37 Blurring caused by shaking hands
Temperature
High temperatures inside the mobile phone cause more noise to appear in images. For example, in +70
degrees (Celsius), the noise level may be very high, and it further grows if the conditions are dim. If the phone
processor has been heavily loaded for a long time before taking an image, the phone might have considerably
higher temperature inside than in the surrounding environment. This is also normal to camera operation;
do not change the camera module.
Figure 38 Noisy image taken in +70 degrees Celsius

Phone display

If the display contrast is set too dark, the image quality degrades: the images may be very dark depending
on the setting. If the display contrast is set too bright, image contrast appears bad and "faint". This problem
is solved by setting the display contrast correctly. This is normal behaviour; do not change the camera module.
Basic rules of photography (especially shooting against light)
Because of dynamic range limitations, taking images against bright light might cause either saturated image
or the actual target appear too dark. In practice, this means that when taking an image indoors and having,
for example, a window behind the object, the result is usually poor. This is normal behaviour; do not change
the camera module.
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