Lexmark E450DN - E 450dn B/W Laser Printer User Manual

2-24 Service Manual
4512-630
Print quality service checks
Note: Ensure the cover closes tightly. A gap in the opening may allow light to expose the photoconductor
resulting in a ‘dirty’ print. Extreme environmental conditions, temperatures, and humidity will affect the print
quality.
Using print quality test pages
To help isolate print quality problems, like streaking, print test pages using the print quality test pages. To print
the print quality test pages:
1. Enter Configuration Menu.
a. Turn off the printer.
b. Press and hold and .
c. Turn on the printer.
d. Release the buttons when Performing Self Test displays..
e. The message CONFIG MENU displays.
f. Press to Prt Quality Pgs.
g. Press to print the pages.
Four pages print to help evaluate print quality. The first page has various fonts and a graphic, the second
page is gray with graphics, the third page is black, and the last page is blank.
2. Use the test pages to isolate problems such as light or toner streaks. See “POST symptom table” on
page 2-15 for solutions to these problems.
3. Press to Exit Config Menu and press .
To exit configuration, turn the printer off.
Blank page
FRU Action
Toner cartridge (not a
FRU)
Remove the toner cartridge, and gently shake it to evenly distribute the toner.
Check for cartridge damage.
Printhead
LVPS/HVPS
Controller card
Blank pages can be caused by a defective printhead assembly,
LVPS/HVPS, or controller card.
• Printhead errors typically result in printer service errors unless there is blockage of the
beam or dust on the lens.
• Blank pages typically are caused by the PC roll not being properly charged. Try a
different PC kit.
Unplug the printer, and check the cable continuity between the LVPS/HVPS connector
marked OPC (at PCN 2) and the corresponding wire form (spring) found about 14 mm
above and to the right of the transfer roll gear.
• If there is not continuity, call the next level of service.
Try a different toner cartridge and PC kit.
• If those fail, replace the LVPS/HVPS, controller card, or the printhead in that order.

Lexmark E450DN - E 450dn B/W Laser Printer Specifications

General

Brand	Lexmark
Model	E450DN - E 450dn B/W Laser Printer
Category	Printer
Language	English