Canon Color imageCLASS MF8170c Basic Manual page 153

Q Is the machine installed in a stable location?
A Install the machine in a proper location. (See "Installation," on p. xiv.)
Copies are too dark or too light.
Q Is the exposure adjusted correctly?
A Adjust the exposure correctly using [Exposure]. (See "Adjusting the Exposure
(Density)," on p. 5-6.)
Q Is the machine in the toner saver mode?
A Set <B & W TONER SAVER> to <OFF> in <COMMON SETTINGS> of the
Menu. (See <3. B & W TONER SAVER> of "Menu Descriptions," on p. 10-3.)
The printouts are partly missing or shaded when you make copies on heavy paper.
Q Is the paper type set correctly?
A Select <HEAVY PAPER> in <PAPER TYPE> in <PAPER SETTINGS> of the
Menu. (See "Specifying the Paper Type," on p. 2-20.)
The printouts are missing when you make copies on rough paper.
Q Is the paper type set correctly?
A Select <TRANSPARENCY> in <PAPER TYPE> in <PAPER SETTINGS> of the
Menu. (See "Specifying the Paper Type," on p. 2-20.)
The edges of copies are dirty when you make copies.
Q Is the paper size set correctly?
A Specify the appropriate paper size in <PAPER SIZE> in <PAPER SETTINGS>
of the Menu. (See "Specifying the Paper Size," on p. 2-19.)
Images in which two or more colors are overlaid come out faint.
Q Is proper paper being used?
A Replace the paper to a type that can be used with this machine. (See "Print
Media Requirements," on p. 2-1.)
Print Quality Problems
9
9-31