Canon MX390 series Online Manual page 34

After confirming that the FINE cartridge is installed properly, close the paper output cover.
If the problem is not resolved, remove the FINE cartridges, then install them again.
Refer to Replacing a FINE Cartridge for how to install the FINE cartridges.
• When copying, see also the sections below:
• Check 6: Is the platen glass or the glass of ADF dirty?
Clean the platen glass or the glass of ADF.
Cleaning the Platen Glass and Document Cover
Note
If the glass of ADF is dirty, black streaks appear on the paper as shown below.
• Check 7: Check that the original is loaded correctly on the platen glass
or in the ADF.
Loading Originals
• Check 8: Is the original document is loaded with the proper side facing
up/down?
When loading the original on the platen glass, the side to be copied should be face down. When
loading the original in the ADF, the side to be copied should be face up.
• Check 9: Did you copy a printout done by this machine?
If you use a printout done by this machine as the original, print quality may be reduced depending on
the condition of the original.
Print from the machine directly, or reprint from the computer.