Lexmark 840 Printer User Manual


 
Solving print quality problems
101
Troubleshooting
Entire page is white. Make sure the packaging material is removed from the photoconductor kit.
Check the photoconductor kit to be sure it is installed correctly.
Replace the photoconductor kit.
Streaks appear on the page. If you are using preprinted forms, make sure the ink can withstand temperatures of
230°C (446°F).
Replace the photoconductor kit or toner cartridge.
Printing is too dark. Change the Toner Darkness setting in the Quality menu.
Change the Brightness setting in the Quality menu.
Change the Contrast setting in the Quality menu.
Note: Macintosh computer users should make sure the lines per inch (lpi) setting is not
set too high in the software application.
Characters have jagged or
uneven edges.
Change the Print Resolution setting in the Quality menu to 600 dpi, 1200 dpi, or 2400
Image Q.
Enable Enhance Fine Lines.
If you are using downloaded fonts, verify the fonts are supported by the printer, the
host computer, and the software application.
Problem Action
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