User Guide

When checking for possible errors in camera functionality, knowing what error is suspected significantly helps

the testing by narrowing down the amount of test cases. The following types of image quality problems are

common:

• Dust (black spots)

• Lack of sharpness

• Bit errors

Taking and evaluating test pictures

When taking a test picture, remember the following:

• Avoid bright fluorescent light, 50/60Hz electrical network or high artificial illumination levels

• If the phone is hot, let it rest for a while before taking the picture

• Make sure the optical system is clean

• Use highest possible resolution

• Make sure the light is suffiecient (bright office lightning)

• Do not take the picture towards light source

• Be as still as possible when taking the picture

• Distance should be at least 40cm, 1-2m is recommended

When evaluating a test picture, remember the following:

• The center of the picture is sharper than the edges

• The image may be blurred, though it does not show in the viewfinder

• Analyse the picture from your PC monitor, full colour setting is recommended

• If possible, compare with a picture of the same motive taken with a similar Nokia device

Camera troubleshooting

If the camera is not working, do the following:

1 Check/replace PWB

2 Replace PWB

SIM card failure

The hardware of the SIM interface from the UEMEK to the SIM connector can be tested without a SIM card. When

the power is switched on, the phone first searches for a 1.8 V SIM card and then for a 3 V SIM card. After four

failed attempts the display will say "Insert SIM card".

The error "SIM card rejected" means that the ATR message received from the SIM card is corrupted, e.g. data

signal levels are wrong. The first data is always ATR and sent from card to phone.

RM-13/33

Nokia Customer Care Baseband Troubleshooting and Tuning

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