Operation Manual

Troubleshooting > 52
W HEN THE PRINT QUALITY IS POOR
When the print quality is poor, select the closest symptom from the following table to rectify
the problem.
If the print quality does not improve after carrying out the appropriate action, contact
service.
SYMPTOM REASON/ACTION
Printing is light.
(faded, blurred).
The paper is damp. Replace with paper from a new ream.
The drum unit/toner cartridge is defective/damaged or there is no more
toner inside the cartridge. Replace with a new drum unit/toner
cartridge.
See “Drum unit and toner cartridge” on page 55.
The Toner Saving feature is on. Uncheck the Toner Saving checkbox
on the Graphics tab of the printer driver.
Online Help for the printer driver
You may be using Draft mode. Turn off the Draft mode.
Black spots or
horizontal/vertical
streaks are printed.
Dirt appears at
equal intervals.
The drum unit/toner cartridge is defective or damaged or at the end of
its life. Replace with a new drum unit/toner cartridge.
See “Drum unit and toner cartridge” on page 55.
The fuser may be defective. Replace the fuser (in the maintenance kit).
The transfer roller may be defective. Replace the transfer roller (in the
maintenance kit). See “Replacing the transfer roll cartridge” on
page 61.
The feed route of the paper is stained. Print a few pages to remove the
stains.
White dots appear
in black filled areas.
The paper used is not suitable. Load the correct type of paper.
See “Usable Paper” in the Reference Guide.
The drum/toner cartridge is defective or damaged or at the end of its
life. Replace with a new drum/toner cartridge.
See “Drum unit and toner cartridge” on page 55.
Printed image
smudges when
rubbed with your
finger.
The toner is not
fixed on the paper.
Paper is smeared
with toner.
The paper loaded in the paper tray does not match the paper type set
on the control panel. Set the appropriate paper type of the paper loaded
in the paper tray on the control panel.
See “Usable Paper” and “Setting Media Types” in the Reference Guide.
The paper is damp. Replace with paper from a new ream.
See “Loading paper” on page 28.
The paper used is not suitable. Load the correct type of paper.
See “Usable Paper” in the Reference guide.
The printer may be located in an environment with extreme
temperature or humidity. Verify if the printer is located in an
environment with temperature between 5o and 32o C (41o and 89o F),
and the relative humidity between 15% and 85%. Move the printer to a
suitable area, away from air conditioning vents, open loading docks etc.
The fuser may be defective. Replace the fuser (in the maintenance kit,
see “Maintenance kit” on page 61).