Lexmark 250dn manual Troubleshooting, General problems, Problem / Question, Solution / Answer

9 Troubleshooting

General problems

Problem / Question	Solution / Answer
What do the blinking lights	See Understanding the control panel lights on page 8 for information about what each
mean?	light pattern means.
Why am I missing	If you see voids (missing characters) when printing envelopes, check your printer driver
characters when I print on	settings to make sure you selected Envelope from the Paper Type menu.
envelopes?	If Envelope is already selected, try changing the texture setting to a rougher setting.
	Sometimes toner does not adhere well to smooth-textured envelopes. From your printer
	driver, select Custom 6-Rough Env from the Paper Type menu.
How do I clear a paper	See Clearing jams on page 56 for information about clearing paper jams.
jam?
How do I restore the	Sometimes restoring the printer to the original factory default settings solves formatting
factory defaults?	problems. To reset the factory defaults:
	1	Turn off the printer.
	2	Open the front door.
	3	Press Continue as you turn the printer back on.
	4	Keep pressing Continue until the lights cycle, then release the Continue button.
	5	Close the front door.
	6	Press Cancel.
	7	Press Continue until the control panel cycles through all the lights.
		The Load Paper, Toner Low / Replace PC Kit, Ready and Continue lights appear.
	8	Release the Continue button.
	9	Turn the printer off and back on.
		Factory defaults have been reset.
The paper is curled once it	•	Use paper that is sealed in its original packaging.
exits the printer.	•	Turn the paper over.
	•	Rotate the paper 180 degrees.
	•	If you are printing a multiple-page job, try printing it duplex.
	•	When printing on heavy print media, open the rear exit door for a straight-through path.
	•	Try another kind or brand of print media, such as a xerographic paper for laser printers.
	•	If possible try printing in a less humid environment.
	If the paper still curls, select the Reduce Curl setting from the Configuration menu (See
	Turning on Reduced Curl mode on page 86.).
The toner low light	Yes, you can still print. To extend the life of the toner cartridge somewhat, remove the toner
sequence is on, but I don’t	cartridge, firmly shake it from side to side and front to back several times to use the remaining
have another cartridge to	toner, then insert it back into the printer. Repeat this procedure multiple times.
put in yet. Can I still print	If print remains faded, replace the toner cartridge.
with the low cartridge?
The printer seems to print	This is normal. The printer sometimes prints at a slightly slower speed when feeding print
slower when using the	media from the manual feeder.
manual feeder.
Envelopes jam when	Close the rear exit door.
printing with the rear exit
door open.

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