Lexmark 637, CX510DE manual Scanner unit does not close, Poor copy quality, Troubleshooting 309

Troubleshooting 309

Scanner unit does not close

Action		Yes	No
Check if there are no obstructions between the scanner unit and the		The problem is solved.	Contact customer
printer.			support.
a	Lift the scanner unit.
b	Remove any obstruction that keeps the scanner unit open.
c	Lower the scanner unit.

Did the scanner unit close properly?

Poor copy quality

Action	Yes	No
Step 1	Clear the error or status	Go to step 2.
Check if an error or status message appears on the display.	message.
Does an error or status message appear?
Step 2	Go to step 3.	Increase the scan
Check the quality of the original document.		resolution setting for a
		higher‑quality output.
Is the quality of the original document satisfactory?
Step 3	Go to step 4.	See “Cleaning the
If dark marks appear on prints, then clean the scanner glass and the ADF		scanner glass” on
glass using a clean, lint-free cloth dampened with water.		page 215.
Is the scanner glass clean?
Step 4	Go to step 5.	See “Print quality
Send a print job, and then check for print quality problems.		problems” on
a From the General Settings menu, adjust the Eco‑Mode settings.		page 287.
b From the Copy menu, adjust the Darkness setting.
c If the print remains faded, then replace the toner cartridge.
Is the print quality satisfactory?
Step 5	Go to step 6.	Place the document or
Check the placement of the document or photo.		photo facedown on the
Make sure the document or photo is loaded facedown on the scanner		scanner glass in the
		upper left corner.
glass in the upper left corner.
Is the document or photo loaded correctly?