218 Troubleshooting Q1860-90918
Table 46. Gray background
Possible cause Action
Media 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 media and to store
it correctly.
Inside of the printer is dirty
(toner might have leaked out
of the toner cartridge).
Clean the inside of the printer (see chapter 4). Install a new toner cartridge if
it is leaking.
Printer’s operating
environment does not meet
the specifications.
Make sure that the printer’s operating environment meets the specifications.
Printing on envelope seams.
Printing on an envelope
seam can cause a
background scatter problem.
Move the text to an area that has no seams. If you are not printing on seams,
try a higher toner density setting.
Wrong toner density setting. From the print-quality menu on the control panel, increase the toner density
setting. Make sure EconoMode is off.
Faulty toner cartridge. Replace the toner cartridge.
High-voltage connector
springs are dirty or
defective.
The high-voltage connectors are mounted on and above the dc controller
and protrude into the toner cartridge cavity.
Check the springs for functionality. Clean if dirty, replace if defective or
missing.
High-voltage circuitry is
defective.
Replace the dc controller.
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