User`s manual

74 P630i, P640i Card Printer User’s Manual 980541-003 Rev. A
Troubleshooting
Quality Problems
• Toothed transport belt wrong length.
Poor color rendering
Important • Changes in contrast settings will not take effect until power is cycled.
• Possible source issues - poor quality photos or graphics, card layout application
settings. Isolate the problem by printing a known image, such as Portraits.bmp,
through IDPrint Lite.
• Vary brightness and contrast controls in Preferences > Image Adjustment. Fine tune if
necessary using Contrast Adjust in Properties > Device Settings > Color Calibration.
Faint, non-uniform image
• Printhead pressure too low. Adjust downward.
• Printhead not pivoting freely.
Gaps in image at edges and corners
• Possible de-lamination/wear of platen’s rubber surface. Try cleaning platen. If
unsuccessful, replace platen.
• Possible non-uniformity of card thickness, or card surface defects.
Continuous white or black stripes on card’s longer dimension
• Before doing anything else, clean the printing edge of the printhead with alcohol.
• White stripe means blown pixel (non-functioning heating element). One or two blown
pixels in isolation may be acceptable to some. Otherwise replace printhead.
• Black stripe means non-functioning circuit(s) on printhead. If so, replace printhead,
but first check that it is not the result of an image size change not followed by power
cycling the printer.