Lexmark C935dn User Manual

Flash memory card
Make sure the flash memory card is securely connected to the printer system board.
Hard disk with adapter
Make sure the hard disk is securely connected to the printer system board.
Internal print server
If the internal print server does not operate correctly, these are possible solutions. Try one or more of the following:
CHECK THE PRINT SERVER CONNECTIONS
Make sure the internal print server is securely attached to the printer system board.
Make sure you are using the correct (optional)...

CHECK THE PAPER GUIDES
Move the guides in the tray to the correct positions for the paper size loaded.
HAS THE PAPER ABSORBED MOISTURE DUE TO HIGH HUMIDITY?
Load paper from a fresh package.
Store paper in its original wrapper until you use it.
Print jobs are not routed to the booklet‑maker bin
These are possible solutions. Try one or more of the following:
CHECK THE PAPER
Make sure the paper is loaded in a 520‑sheet tray or the multipurpose feeder. If the paper is loaded in the
multipurpose feeder, make...

3Press  until Setup Menu appears, and then press .
4Press  until Print Recovery appears, and then press .
5Press  until Jam Recovery appears, and then press .
6Press  until On or Auto appears, and then press .
Solving print quality problems
The information in the following topics may help you solve print quality problems. If these suggestions do not correct
the problem, contact Customer Support. You may have a printer part that requires adjustment or replacement.
Isolating print quality problems
To help...

Blank pages
The printer may need to be serviced. For more information, contact Customer Support.
Characters have jagged or uneven edges
If you are using downloaded fonts, verify that the fonts are supported by the printer, the host computer, and the
software program.
Clipped images
These are possible solutions. Try one or more of the following:
CHECK THE PAPER GUIDES
Move the guides in the tray to the correct positions for the paper size loaded.
CHECK THE PAPER SIZE SETTING
Make sure the Paper Size...

If an 84 Color pc unit life warning, 84 Black pc unit life warning, 84 Replace color
pc units, or 84 Replace black pc unit message appears, replace the photoconductor(s).
Gray background
ABCDE
ABCDE ABCDE
REDUCE THE TONER DARKNESS SETTING
From Print Properties, select a different Toner Darkness setting before sending the job to print.
Incorrect margins
ABCD
ABCD
ABCD
CHECK THE PAPER GUIDES
Move the guides in the tray to the correct positions for the paper size loaded.
CHECK THE PAPER SIZE SETTING
Make...

Light colored line, white line, or incorrectly colored line
These are possible solutions. Try one or more of the following:
CLEAN THE PRINTHEAD LENSES
The printhead lenses may be dirty.
A TONER CARTRIDGE MAY BE DEFECTIVE
Replace the defective toner cartridge.
ARE THE PHOTOCONDUCTORS DEFECTIVE?
Replace the photoconductor(s).
Note: The printer has four photoconductors: cyan, magenta, yellow, and black. The cyan, magenta, and yellow
photoconductors must all be replaced at the same time. The black...

HAS PAPER ABSORBED MOISTURE DUE TO HIGH HUMIDITY?
Load paper from a fresh package.
Store paper in its original wrapper until you use it.
CHECK THE PAPER TYPE SETTING
Make sure the Paper Type setting matches the paper loaded in the tray.
CHECK THE PAPER
Avoid textured paper with rough finishes.
IS THE TONER LOW?
When 88  toner low appears, order a new cartridge.
Print is too dark
These are possible solutions. Try one or more of the following:
CHECK THE DARKNESS, BRIGHTNESS, AND CONTRAST SETTINGS
The Toner...

Print is too light
These are possible solutions. Try one or more of the following:
CHECK THE DARKNESS, BRIGHTNESS, AND CONTRAST SETTINGS
The Toner Darkness setting is too dark, the RGB Brightness setting is too dark, or the RGB Contrast setting is too high.
From Print Properties, change these settings.
Note: This solution applies to Windows users only.
From the Quality menu, change these settings.
HAS THE PAPER ABSORBED MOISTURE DUE TO HIGH HUMIDITY?
Load paper from a fresh package.
Store paper in its...

Repeating defects
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DO MARKS OCCUR REPEATEDLY ONLY IN ONE COLOR AND MULTIPLE TIMES ON A PAGE?
Replace the photoconductor(s) if the defects occur every:
44 mm (1.7 in.)
94 mm (3.7 in.)
Note: The printer has four photoconductors: cyan, magenta, yellow, and black. The cyan, magenta, and yellow
photoconductors must all be replaced at the same time. The black photoconductor can be replaced separately.
Skewed print
C
HECK THE PAPER GUIDES
Move the guides in the tray to the correct positions for the paper...

ARE THE PHOTOCONDUCTORS WORN OR DEFECTIVE?
Replace the photoconductor(s).
Note: The printer has four photoconductors: cyan, magenta, yellow, and black. The cyan, magenta, and yellow
photoconductors must all be replaced at the same time. The black photoconductor can be replaced separately.
IS THERE TONER IN THE PAPER PATH?
Contact Customer Support.
Toner rubs off
These are possible solutions. Try one or more of the following:
CHECK THE PAPER TYPE SETTING
Make sure the Paper Type setting matches the paper...