User's Manual

92 Zebra P630i & P640i Card Printer User’s Manual 980541-003 Rev. B
Troubleshooting
Print Quality Problems
Poor color registration
• Minor mis-registration of Y, M and C color passes may be due to printhead angle
adjust screw not in firm contact with printhead frame; contact Zebra
Customer Service.
• For gross mis-registration of Y, M and C, suspect that the card not firmly positioned
against left hand pick edge of truck on one or more passes. Spring at left end of platen
may be missing or bound up. Contact Zebra Customer Service.
• Check printed card for damage on corners or edges. Example: the card may be
scraping along the underside of the hopper base molding. Contact Zebra
Customer Service.
• Printhead pressure too light; contact Zebra Customer Service.
• Printhead may be running hot. Will occur if head resistance incorrectly entered in
driver software. Contact Zebra Customer Service.
• Toothed transport belt pulley may be slipping on drive shaft. Tighten set screws (make
sure the screws bear on flats on the shafts). Contact Zebra Customer Service.
• Check platen spring -- spring height should be the same as the pin height. Contact
Zebra Customer Service.
Poor color rendering
• Possible source issues - poor quality photos or graphics, card layout application
settings. Isolate the problem by printing a known image.
• Vary brightness and contrast controls; see “Image Adjustment Tab” on page 64
• Fine tune if necessary using Contrast Adjust; see “Color Calibration” on page 69.
Faint, non-uniform image
• Printhead pressure too low; contact Zebra Customer Service.
• Printhead not pivoting freely; contact Zebra Customer Service.
Important • Changes in contrast settings will not take effect until power is cycled.