Print Quality Problems - Canon Color imageCLASS MF8170c Basic Manual

Print Quality Problems

The print quality is not what you expect; print is not clear, has missing dots or white streaks.
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Copies are dirty.
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9-30 Print Quality Problems
Are the size, thickness and type of the paper you are using within the
specifications of the machine?
Check that the paper you are using is supported by the specifications of the
machine. (See "Print Media Requirements," on p. 2-1.)
Are the cartridges installed correctly?
Make sure the cartridges are is installed correctly. (See the Set-Up Instructions
for the Machine.)
Is any toner left in a cartridge?
See "Replacing the Cartridges," on p. 8-5, and replace the toner cartridges if
necessary.
Is the exposure adjusted correctly?
Adjust the exposure correctly using [Exposure]. (See "Adjusting the Exposure
(Density)," on p. 5-6.)
Is the platen glass or the platen glass cover clean?
Clean the platen glass or the platen glass cover. (See "Cleaning the Scanning
Area," on p. 8-2.)
Is the cartridge free of damage?
If there is a scratch on the cartridge, replace with a new one. (See "Replacing
the Cartridges," on p. 8-5.)
Is the machine adjusted to room temperature? If not, condensation might build
up inside the machine.
Allow at least 2 hours for the machine to adjust to room temperature before
attempting to use it.