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Cause Solution
The transfer module is defective. Replace the transfer module if the defects occur every:
• 38 mm (1.50 in.)
An imaging unit is defective. Replace the imaging unit if the defects occur every:
• 41.0 mm (1.61 in.)
• 75.0 mm (2.95 in.)
If marks occur down the page repeatedly in all colors:
The fuser is defective. Replace the fuser if the defects occur every:
• 141 mm (5.55 in.)
Shadow images appear on prints
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CHECK THE PAPER TYPE AND WEIGHT SETTINGS
Make sure the paper type and weight settings match the paper loaded in the tray:
1 From the printer control panel Paper menu, check the Paper Type and Paper Weight settings.
2 Before sending the job to print, specify the correct type setting:
• For Windows users, specify the type from Print Properties.
• For Macintosh users, specify the type from the Print dialog.
MAKE SURE THE IMAGING UNIT IS NOT DEFECTIVE
Replace the imaging unit.
MAKE SURE THE TONER CARTRIDGE IS NOT LOW ON TONER
When 88.xx [color] cartridge low appears, make sure the toner is distributed evenly within the toner
cartridge.
1 Remove the toner cartridge.
Warning—Potential Damage: Be careful not to touch the photoconductor drum. Doing so may affect the print
quality of future print jobs.
2 Firmly shake the cartridge side-to-side and front-to-back several times to redistribute the toner.
3 Reinsert the toner cartridge.
Note: If print quality does not improve, replace the toner cartridge.
Troubleshooting 299