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Troubleshooting the Printing System
7-61
Table 7-23. Light Print, Dark Print, or Fade
Possible Cause Action
Wrong toner density
setting.
From the Print Quality Menu on the Control Panel,
adjust the toner density setting. Make sure
EconoMode is off.
Toner Cartridge is low. Replace the Toner Cartridge.
Transfer Roller is
defective.
Replace the Transfer Roller.
Paper does not meet
printer specifications
or is stored
improperly.
1. Print a few more pages to see if the problem
corrects itself.
2. Turn over the stack of paper in the tray. Also try
rotating the paper 180°.
3. Check the paper (or other print media) type and
quality. Replace the paper, and advise the customer
to use the recommended paper and store it properly.
Poor contact to the
Engine Controller
Board.
1. Clean the contacts if they are dirty. If the problem
remains after cleaning, or parts are damaged or
deformed, replace them.
2. Replace the Engine Controller Board if necessary.
Defective Laser
Scanner.
Replace the Laser Scanner.
Defective Engine
Controller Board.
Replace the Engine Controller Board.
See also “Faded Print/Bubbles” on page 7-59.
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