Question about Canon NP 6551 Black and White Copier
Okay, for starters, it sounds like your machine has been properly service in along time. typically on this machine every 6-12 months. anyway turn off and unplug the machine. it will need the optics cleaned for starters( you must remove the guide plates and then remove the glass and be very careful but slide the scanner out and clean the 3 mirrors with glass cleaner and a very soft cloth. then reassemble. slide out the transfer unit and inspect but do not touch the drum, the machine should have come with a corona wire cleaner, clean them, very careful not to break them. reinstall. the cleaning web you are refering to is okay for one roller to be dirty but there are two, one that is new felt and the other is where the used or dirty felt is. then there are the orange and black rollers which should stay clean without any real marks if your cleaning web is working properly. then as far as all the rollers except the drum(never touch, ever.) you can use rubbing alcohol moistened cloth to wipe and turn, wipe and turn. your paper pick up tires are propably very dirty causing your machine to misfeed. so clean them all. they are right over where the paper drawer sits. Good Luck, Don't break anything. if you very careful you will be able to fix this machine.
Posted on Apr 06, 2008
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Posted on Jan 02, 2017
Tips for a great answer:
If the Paper Feed Roller is dirty or paper powder is attached to it, paper may not be fed properly.
In this case, clean the Paper Feed Roller. Cleaning will wear out the Paper Feed Roller, so perform this only when necessary.
You need to prepare: three sheets of A4 or Letter-sized plain paper
1.Make sure that the power is turned on, and remove any paper from the Rear Tray.
2.Open the Paper Output Tray gently, and open the Output Tray Extension.
3.Clean the Paper Feed Roller without paper.
(1) Press the (Maintenance) button repeatedly until b appears.
(2) Press the Black or Color button.
The Paper Feed Roller will rotate as it is cleaned.
4.Clean the Paper Feed Roller with paper.
(1) Make sure that the Paper Feed Roller has stopped rotating, and load three sheets of A4 or Letter-sized plain paper in the Rear Tray.
(2) Make sure that b appears on the LED, then press the Black or Color button.
The machine starts cleaning. The cleaning will be completed after the paper is ejected.
This should fix the issue
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It may be this simple:
1- as silly as it may seem, are you sure the size is correct, if it is a letter size paper and it says legal, it will jam. open the paper tray and make sure the guides are snug againgst the paper,
does it say letter (or legal) for the tray you are going to use, if they do not correspond then look behind the tray inside the machine, is there a paper jammed in the back?
Or not so easy
2-You are having a sensor problem, take a look at the duplex tray,
pull it out and look at the sensors ( black little levers that stick out) are there any pieces of paper, can you move them and they spring back into place?
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