NEC 4650N - SuperScript Color Laser Printer, User Manual

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Print Quality 105
TROUBLESHOOTING
Color Misregistration
When two colors do not register properly, it may indicate
problems with the Belt Cartridge.
Solutions
• Confirm that the Belt Cartridge is properly seated.
• Replace the Belt Cartridge if it is worn or damaged.
• Call a service representative to check the printer to
replace the Cleaning Brush if necessary.
Toner Streak
When toner is streaked or brushed across the page, it may
indicate problems with the Toner Module.
Solutions
• Remove Toner Modules and rock them to the left and
right to redistribute toner.
• Confirm that Toner Modules are installed properly.
• Replace low or damaged Toner Modules.
Mottled Image
There is variation or mottling in the density of the image.
Solution
• Call a service representative to check the printer.
Shadowing
A residual image of a preceding page appears on subsequent
pages.
Solution
• Call a service representative to check the printer.
Insufficient Gloss
When the printed image appears dull, it may indicate a
problem with the Fuser Cleaning Roller or Fuser Unit.
Solutions
• Replace the Fuser Cleaning Roller (see page 89).
• Replace the Fuser Unit if getting to end of life (see page
93).
Back of Paper is Stained
There are toner stains on the back side of the paper.
Solution
• Paper containing unfused ink may have been pulled up
through the Fuser Rollers, probably after a paper jam.
(Most paper jams are best removed from the back of the
printer.) Run several sheets of plain paper through the
printer to clean these rollers.
• If problem persists call a service representative to check
the printer.
Missing Print
A blank page is printed or a specific color is missing.
Solution
• Make sure all Toner Modules are installed correctly.
• Call a service representative to check the printer.
Partial Printing
When an image is partially printed, it may indicate improper
fusing.
Solutions
• Use only recommended paper.
• Make sure that the correct Media Type is selected on the
Operator Panel.
• Replace the Fuser Unit if it is at the end of its life.