Reply part #1
The 5700 error is showing that the Auto Sheet Feeder paper sensor has an error and needs cleaning or changing to fix this error. This can also be caused by problems with the paper pick up mechanism and roller so make sure you thoroughly dust them with a soft brush or clean them with a cotton bud and isopropyl alcohol. Also preferably vacuum out the whole paper path with a soft brush tool with the printer switched off at the mains. If cleaning the sensor and cleaning the paper path does not clear the error then you will have to call as service engineer and possibly have the sensor or paper feed mechanism serviced or replaced.
Reply part #2
Cleaning the Paper Feed Roller of the Rear Tray
Cleaning the paper feed roller of the Rear Tray will wear the roller, so perform this only when necessary.
1 Make sure that the machine is turned on, and then remove any paper from the Rear Tray and Front Tray.
2 Clean the paper feed roller.
(1) Press the HOME button.
The HOME screen is displayed.
(2) Select Settings then press the OK button.
The Settings screen is displayed.
(3) Select Maintenance, then press the OK button.
The Maintenance screen is displayed.
(4) Select Roller cleaning, then press the OK button.
The confirmation screen is displayed.
(5) Select Yes, then press the OK button.
The Paper Feed Roller will rotate as it is cleaned.
3 Repeat (4) and (5) in step 2 twice.
4 Open the Front Tray, and then extend the Output Paper Support.
5 Make sure that the paper feed roller stops rotating, then load three or more sheets of A4 or Letter-sized plain paper in portrait orientation in the Rear Tray.
6 Repeat (4) and (5) in step 2 three times.
The paper cleans the paper feed roller as it feeds through the machine.
Reply part#3
Cleaning the Paper Feed Roller of the Front Tray
1 Turn off the machine.
2 Load five or more sheets of A4 or Letter-sized plain paper in the Front Tray.
Note Paper is loaded to aid the cleaning process and will not be printed on.
3 Hold the Rear Cover Lever and then press to the right and pull to remove the Rear Cover.
4 Rotate the paper feed roller toward you using a cotton swab or the like to wipe off dust or stain.
Important Be sure not to touch the cleaner .
Note Paper loaded in the Front Tray will gradually feed and eject as you rotate the roller. Remove ejected paper. If you run out of paper while cleaning, reload the paper in the Front Tray.
If the dirt is hard to remove, slightly moisten the tip of the cotton swab with isopropyl alcohol or water.
5 Reattach the Rear Cover.
Hold the Rear Cover so that the Rear Cover Lever comes to the left. Align the protrusions at the right edge of the cover with the slots at the rear of the machine and press on the lever to reattach the Rear Cover.
Important Press firmly on the Rear Cover on the rear of the machine until it is locked in place. If the Rear Cover is not reattached properly, paper may not be fed properly and cause paper jams.
6 To remove dust after cleaning or dry the wet paper feed roller, perform the copy operation from the Front Tray twice.
(1) Load two sheets of A4 or Letter-sized plain paper in the Front Tray.
(2) Turn on the machine, and then press the Paper Feed Switch to select the Front Tray.
Note Paper is loaded to clean the paper feed roller. Any original document is not required to load.
(3) Perform the copy operation twice.
Reply part#4
Cleaning the Inside of the Machine (Bottom Plate Cleaning)
This section describes how to clean the inside of the machine. If the inside of the machine becomes dirty, printed paper may get dirty, so we recommend performing cleaning regularly.
Important Do not perform any other operation while the bottom plate is being cleaned.
1 Make sure that the machine is turned on, and then remove any paper from the Rear Tray.
2 Open the Front Tray, and then extend the Output Paper Support.
3 Fold a single sheet of A4 or Letter-sized plain paper in half width wise, and then unfold the paper.
4 Load this and only this sheet of paper in the Rear Tray with the open side to the front.
(A) Load the paper after unfolding it.
5 Perform bottom plate cleaning.
Important Even if the Front Tray is selected as the paper source, paper will be fed from the Rear Tray.
(1) Press the HOME button.
The HOME screen is displayed.
(2) Select Settings , then press the OK button.
The Settings screen is displayed.
(3) Select Maintenance, then press the OK button.
The Maintenance screen is displayed.
(4) Select Bottom plate cleaning, then press the OK button.
The confirmation screen is displayed.
(5) Select Yes, then press the OK button.
The paper cleans the inside of the machine as it feeds through the machine.
Check the folded part of the ejected paper. If it is smudged with ink, perform Bottom Plate Cleaning again.
If the problem is not resolved after performing Bottom Plate Cleaning twice, the protrusions inside the machine may be stained. Clean them according to instructions.
Note When performing Bottom Plate Cleaning again, make sure to use a new piece of paper.
Reply part#5
You can also download a full manual from the following Canon Support Link
http://software.canon-europe.com/softwar...=
Just click on MP520.zip
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