Canon imagePROGRAF GP-4000 - Manual (Page 416)

Cleaning the Roll Unit
About once a month, clean the roll unit to ensure optimal operation.
Important
• When the sensor of the feed slot is dirty, the printer might not perform auto feeding properly. Even if the
sensor seems clean, we recommend cleaning it because it may have paper dust on it.
1. Remove any roll paper loaded in roll unit. 1.
Removing the Lower Roll from the Roll Unit (Option)
2. Turn printer off. 2.
Turning the Printer On and Off
3. Unplug power cord from outlet. 3.
Caution
• Always turn off the printer and unplug the power cord before cleaning or maintenance.
Accidentally leaving the printer on poses a risk of injury if you touch moving parts inside the
printer.
4. Wipe away any residue and paper dust from areas (A, B) that come in contact with paper 4.
and sensor (C) with a thoroughly wrung out damp cloth, and wipe dry with a dry cloth.
416