Roller Cleaning Operation - Canon S520 Service Manual

Part 2: Troubleshooting

1.3.3 Roller cleaning operation

This is to remove the paper dust adhering to the auto sheet feeder's rollers. With the
printer turned on, hold down the RESUME button until the green indicator blinks
three times. The cleaning of the rollers will then start.
There are two cleaning methods:
(1) Using plain paper
Place a sheet of plain paper on the auto sheet feeder and execute roller cleaning.
Do this three times.
(2) Rotating the rollers without paper
Execute roller cleaning without placing any paper on the auto sheet feeder.
(The rollers will perform ten rotations.)
Do this three times.
Do not execute the cleaning operation more times than necessary.
Excessive cleaning will generate rubber dust which can affect the printer's
operation.
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S900 / S820 / S750 / S520