Troubleshooting
Print Quality Problems
This section describes likely causes of and possible solutions for problems with
print quality.
Checking the Condition of the Machine
If there is a problem with the quality of printing, first check the condition of the
machine.
Possible Cause
There is a problem with the ma-
chine's location.
Unsupported types of paper is
used.
The paper type setting is incor-
rect.
A non-genuine print cartridge is
being used.
An old print cartridge is being
used.
The machine is dirty.
Color degradation has occurred. Color degradation may occur in color printing after the ma-
9
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Solution
Make sure that the machine is on a level surface. Place the
machine where it will not be subject to vibration or shock.
Make sure that the paper being used is supported by the ma-
chine. See p.64 "Supported Paper for Each Tray".
Make sure that the paper type setting of the printer driver
matches the type of paper loaded. See p.88 "Specifying Pa-
per Type and Paper Size".
Refilled or non-genuine print cartridges reduce print quality
and can cause malfunctions. Use genuine print cartridges
only. See p.328 "Consumables".
Print cartridges should be opened before their expiration
date and used within six months of being opened.
See p.311 "Cleaning", and clean the machine as required.
chine is moved or a large number of pages are printed. In
this case, adjust color registration by executing [Color Regist.]
in [Machine Settings].