Canon MX520 series Online Manual page 114

Cleaning the Inside of the Machine (Bottom Plate Cleaning)
Remove stains from the inside of the machine. If the inside of the machine becomes dirty, printed paper
may get dirty, so we recommend performing cleaning regularly.
You need to prepare: a sheet of A4 or Letter-sized plain paper*
* Be sure to use a new piece of paper.
1. Make sure that the power is turned on.
2. Clean the inside of the machine.
(1) Press the MENU button.
(2) Select
LCD and Operation Panel
The setup menu screen will appear.
(3) Select
The Maintenance screen will appear.
(4) Select Bottom plate cleaning, then press the OK button.
The confirmation screen will appear.
(5) Select Yes, then press the OK button.
(6) Follow the message to remove any paper from the front tray, then press the OK
button.
(7) Fold a single sheet of A4 or Letter-sized plain paper in half widthwise, then
unfold the paper.
(8) Fold one side of the opened paper in another half, aligning the edge with the
center crease, unfold the paper, then press the OK button.
(9) Load only this sheet of paper in the front tray with the ridges of the creases
facing up and the edge of the half with no crease facing away from you.
Setup, then press the OK button.
Maintenance, then press the OK button.