Parallel Or Usb Port Service Check - Lexmark E250DN - Govt Laser 30PPM Special Build Mono Taa Service Manual

Media skews
FRU
Paper feed (pick tires) tray 1
Paper feed (pick tires) tray 2
Tray 1
Tray 2 (option)
Media "trees," wrinkles, stacks poorly, or curls
FRU
Fuser

Parallel or USB port service check

1.
Perform a print test to make sure the printer prints correctly. Verify
settings.
2.
Be sure the printer parallel cable is designed for bidirectional printing.
3.
Be sure the user's application is set up correctly.
4.
If the internal print test page prints correctly, the user's application/printer driver is set up correctly, and the
correct bidirectional parallel cable is installed, but the printer still fails to print on command from the host
computer, replace the controller card.
5.
Check the USB cable for continuity.
Action
Check tires for debris. If tires are new, try reversing each on its hub.
Check side guides on Tray 1 and Tray 2. Guides set for a full stack of media
may be too wide when the stack is short.
Action
This problem is most likely due to a worn backup roll. It causes the printer to run hotter than
required for the media being printed. Excessive heat can cause media treeing problems,
poor stacking, or curl.
Print the menu sheet (press and release
Look at the media settings. Some, such as card stock or rough texture, may require a higher
fuser temperature, which leads to more of these problems (except stacking) in plain paper.
• Change settings using the printer driver.
• Use the local printer setup utility (included on the CD) to change the NVRAM
settings.
Try a different ream of paper. Moist media has a higher tendency to crease (treeing) and
curl.
with the printer in ready mode).
is on, then press
Diagnostic information
4512-220, -230
to print menu
2-45