Lexmark 7003-050 X340n Service Manual page 56

Problem
The Toner Low message is
displayed.
Solid black areas on
transparencies or white streaks
on paper.
Faint images or repetitive spots
appear on the page.
Groups of black spots appear in
graysacle images.
Pages are blank.
The MFP is on, but nothing prints.
Toner Low message is
displayed and printing stops.
Close Front Door message is
displayed.
The media skews or buckles.
Action
• Remove the toner cartridge, and gently shake it from side to side
to redistribute the toner (6K cartridge only).
• Replace the toner cartridge.
• Choose a different fill pattern in your software program.
• Try a different type of paper. Paper designed for copiers gives the
best quality.
• Remove the toner cartridge, and gently shake it from side to side
to redistribute the toner.
• Replace the toner cartridge.
• Select a different media type or form type setting from your MFP
driver.
• Try a different type of paper. Paper designed for copiers gives the
best quality.
• Replace the toner cartridge.
• Toner cartridge may be damaged. Replace the toner cartridge.
• The print cartridge may be out of toner or defective. Replace the
cartridge.
• You may have a software error. Try turning the MFP off and back
on.
• Check the printhead. See
page 2-29 for more information.
• Make sure the toner cartridge assembly is installed properly.
• Is the MFP processing a scan job? The MFP does not print while
scanning.
• Make sure the network or USB cable is not damaged and is firmly
plugged into the connector on the back of the MFP.
• Print a menu settings page just to save space.
- If you cannot print a menu settings page, call the next level of
support.
- If you can print a menu settings page, the problem is one of
the following:
• Computer
• Software program
• Cable
• (USB only) failed ASIC or controller card. Replace card.
Note: Test by unplugging USB and replugging it with the MFP on. If
the computer indicates "unknown device," replace the controller card.
Press Start. Print quality will be diminished.
Make sure the printer cover is closed.
• Don't overfill Tray 1 or the optional Tray 2 (see media capacities in
the media types and sizes table in the User's Reference).
• Make sure the paper guides are flush against the edges of the
media.
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"Paper feed service checks" on
Diagnostic information
7003-XXX
2-35