Secondary (Front) Camera Troubleshooting; Evaluating Videocall Picture Quality From Secondary Camera; Secondary Camera Hardware Troubleshooting - Nokia 6720 Service Manual

RM-424; RM-564
Camera Module Troubleshooting

Secondary (front) camera troubleshooting

Evaluating videocall picture quality from secondary camera

When testing the picture quality of a videocall, remember the following:
• Avoid bright fluorescent light, 50/60Hz electrical network or high artificial illumination levels
• Make sure the optical system is clean
• Make sure the light is suffiecient (bright office lightning)
• Do not take the picture towards light source
• Hold the phone as still as possible when evaluating the video call image quality.
• Distance should be approximately 40 cm
evaluating the picture quality of a video call, remember the following:
When
Note: Always use the "troubled" phone when evaluating a picture in a video call. Do not evaluate
the picture on the receiving phone.
• The center of the picture is sharper than the edges
• If possible, compare with the picture on another Nokia device in a videocall, and of the same motive.

Secondary camera hardware troubleshooting

Troubleshooting flow
Note: Phone must be in a video call for the secondary camera to be active.
Note: Always use the "troubled" phone when evaluating a picture in a video call. Do not evaluate
the picture on the receiving phone.
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