User Guide

Nokia Customer Care 6(a) - Baseband Troubleshooting

Company Confidential RH-51/52, RH-67/68

The main considerations are:

Amount of light: 300 – 600 lux (bright office lighting) is sufficient.

The scene should contain e.g. small objects for checking sharpness and distance to them

should be in order of 1 – 2 meters

If possible, compare the image to another image of the same scene, taken by different

device.

The taken images should be analysed on PC screen at 100% scaling simultaneously with

reference image. Pay attention to the computer display settings; at least 65000 colors

(16bit) have to be used. 256 (8-bit) color setting is not sufficient, and true color (24bit,

16 million colors) or 32 bit (full color) setting is recommended.

If there appears to be a clearly noticeable difference between the reference image and

the test images, the module might have misfocused lens. In this case, the module should

be changed. Always re-check the resolution after changing the camera. If a different

module produces the same result, the fault is probably in the camera window. Check the

window by looking through it when replacing the module.

Bit errors

Bit errors are defects in image caused by data transmission error between the camera

and phone baseband. This type of error is expected to be rare since usually missing bits

will cause a hardware failure message. Bit errors can be typically seen in images taken of

any object, and they should be most visible in full Mega pixel resolution images.

Viewfinder images may not contain the errors at all due to lower bit rate used in this

mode.

A good practice is to use uniform white test target.

The errors will be clearly visible as colorful sharp dots or lines in camera Mega pixel

images.