Cleaning The Inside Of The Main Unit - Canon imageRUNNER C3489 Reference Manual

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Cleaning the Inside of the Main Unit

If streaks appear on printed output, or random parts of the printed image are
missing, the inside of the main unit may be dirty. In this case, clean the inside of the
main unit, as described below.
NOTE
It takes three minutes and 10 seconds to clean the inside of the main unit.
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Adjusting the Machine
NOTE
When adjusting the density of the characters (latent image), specify settings for
[Latent String Density].
Press [OK].
The more even the contrast between the hidden text and the background is, the
harder it will be to see the hidden text on the original, but the less the hidden text
will appear when it is copied. It is recommended you make a copy of the original
after adjusting the contrast to confirm that the secure watermark becomes visible
as desired.
NOTE
The contents of the settings changed in [Character/Background Contrast
Adjustment] are retained until the next time the settings are changed.
(Additional Functions) ➞ [Adjustment/Cleaning] ➞
Press
[Cleaning inside Main Unit].
Press [Start].
When cleaning is complete, try printing again.