Cleaning the Sensor Glass and the Rollers

If scanned images contain streaks, or if the scanned documents become dirty, the sensor glass or rollers inside the scanner may be dirty. Clean them periodically.

1   Open the document feed tray.

2   Press the OPEN knob from sides, and pull the front unit out and downward to open it.

3   Use compressed air to remove dust and paper particles from the inside of the scanner.

4   Use a clean dry cloth to wipe dirt off the sensor glass.

Wipe the front and back sensor glasses.

Do not spray water or neutral detergent directly on the scanner. Precision mechanisms, such as the light source, may get wet, and cause a malfunction.

Scratches on the sensor glass may cause marks on the images, as well as feeding errors. If there are scratches on the sensor glass, contact your local authorized Canon dealer or service representative.

5   Clean the (1) rollers by wiping the exposed part without turning them.

Clean the (2) rollers while turning them. Wipe the rollers with a cloth that has been dampened with water and thoroughly wrung out, and then use a dry, soft cloth to wipe away any moisture.

6   Clean the (3) rollers by wiping the exposed part without turning them.

7   Wipe the document holding guide with a cloth that has been dampened with water and thoroughly wrung out.

8   Remove the retard roller and feeding roller.

Remove the retard roller and feeding roller from the scanner to clean them, and make sure to reattach them to the scanner when cleaning is finished.

9   Wipe the removed rollers with a cloth that has been dampened with water and thoroughly wrung out.

10   Reattach the retard roller and feeding roller.

11   Close the front unit by gently pushing it up on sides until it clicks into place. Make sure that the front unit is completely closed by pushing until you hear a click.