Oki B401dn User Guide - Page 74

Quality, Problems

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PRINT QUALITY PROBLEMS Before consulting a service representative regarding a print quality problem, check the table below to see if there is a solution, or something you might have overlooked. SYMPTOM PROBLEM SOLUTION Blank sheets printed. Image drum cartridge not properly installed. Reinstall image drum cartridge. Empty or missing toner cartridge. Install new toner cartridge. Entire page prints faintly. Empty toner cartridge. Pages get fainter when toner is used up. Install new toner cartridge. LED array is dirty. Clean LED array. Page has grey background. Static electricity, generally from dry environments, causes toner to stick to background. Change paper to a smoother laser bond or use a humidifier. Page prints all black. Hardware problem. Contact service. Oblong area of faint print appears on each page. Drop out caused by using paper exposed to high humidity. Change paper stocks, check paper storage environment or use a dehumidifier; check toner level. Vertical white streaking or faint areas on page. Toner is low and does not distribute properly, or the drum is worn out. Replace toner cartridge. Check drum and replace the drum, if necessary. Contact service. LED array is dirty. Clean LED array. Vertical black lines. Hardware problem. Contact service. Fuzzy print. LED array is dirty. Clean LED array. Faded print. Toner cartridge is not correctly installed. Toner low. Install toner cartridge correctly. Replace toner cartridge. Smeared or blotched print. Dirty rollers; toner dropped inside printer or image drum problem. Replace image drum and toner. Contact service. Printed page is light/ blurred. Is toner low? Is paper meant for laser printers? Replace toner cartridge. Use recommended paper. LED array is dirty. Clean LED array. Bold characters and dark lines are smeared. Toner is low. Install new toner cartridge. Print is darker than usual. Darkness setting is too high. Change darkness setting. Troubleshooting > 74

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Troubleshooting > 74
P
RINT
QUALITY
PROBLEMS
Before consulting a service representative regarding a print quality problem, check the
table below to see if there is a solution, or something you might have overlooked.
SYMPTOM
PROBLEM
SOLUTION
Blank sheets printed.
Image drum cartridge
not properly installed.
Reinstall image drum cartridge.
Empty or missing toner
cartridge.
Install new toner cartridge.
Entire page prints
faintly.
Empty toner cartridge.
Pages get fainter when
toner is used up.
Install new toner cartridge.
LED array is dirty.
Clean LED array.
Page has grey
background.
Static electricity,
generally from dry
environments, causes
toner to stick to
background.
Change paper to a smoother laser bond or
use a humidifier.
Page prints all black.
Hardware problem.
Contact service.
Oblong area of faint
print appears on
each page.
Drop out caused by
using paper exposed to
high humidity.
Change paper stocks, check paper storage
environment or use a dehumidifier; check
toner level.
Vertical white
streaking or faint
areas on page.
Toner is low and does
not distribute properly,
or the drum is worn out.
Replace toner cartridge. Check drum and
replace the drum, if necessary. Contact
service.
LED array is dirty.
Clean LED array.
Vertical black lines.
Hardware problem.
Contact service.
Fuzzy print.
LED array is dirty.
Clean LED array.
Faded print.
Toner cartridge is not
correctly installed.
Toner low.
Install toner cartridge correctly.
Replace toner cartridge.
Smeared or blotched
print.
Dirty rollers; toner
dropped inside printer or
image drum problem.
Replace image drum and toner.
Contact service.
Printed page is light/
blurred.
Is toner low?
Replace toner cartridge.
Is paper meant for laser
printers?
Use recommended paper.
LED array is dirty.
Clean LED array.
Bold characters and
dark lines are
smeared.
Toner is low.
Install new toner cartridge.
Print is darker than
usual.
Darkness setting is too
high.
Change darkness setting.