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.
1Open the document feed tray (See p. 20).
2Press the OPEN knob from both sides (c), and pull the front unit out and downward to open it (d).
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4Use a clean dry cloth to wipe dirt off the sensor glass.
Scanning Glass
Wipe both the front and back sensor glasses.
d
c
3Use compressed air to remove dust and paper particles from the inside of the scanner.
CAUTION
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.
IMPORTANT
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.
5Clean the c rollers by wiping the exposed part without turning them.
Retard roller
d c
Feeding roller
Clean the d 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.
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