Lexmark C540n Service Manual page 79

RGB Brightness, RGB Contrast, RGB Saturation: Set to 0.
–
– Color Balance: Select Reset Defaults to zero out all colors.
Check the paper type, texture, and weight settings against what is loaded in the printer.
–
Once the printer has been restored to its default levels, do the following:
Inspect the imaging unit for damage, including the developers and toner cartridges. Replace if damaged.
1.
If paper other than 20lb plain letter/A4 paper is being used, load 20lb plain letter/A4.
2.
Print the Print Quality pages to see if the problem remains. Look for variations in the print from what is
3.
expected.
To print the print Quality pages:
Enter Diagnostics (turn the printer off, press and hold Left (
a.
and release when the installed memory and processor speed displays).
Select PRINT TESTS, and press Select (
b.
c. Select Print Quality Pgs, and press Select (
The message Printing Quality Test Pages is displayed.
An incorrect printer driver for the installed software can cause problems. Incorrect characters could print, and
the copy may not fit the page correctly.
When you measure voltages, measure from the connector to the printer ground.
) and Select (
).
).
Diagnostic information
5025-2xx, 4xx
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), turn the printer on,
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