6A81 Printer error has occurred. Turn off power and then back on again. If problem persists see the manual. I have tried this with the same result. ( I had a piece of paper got jammed... have released it but don't know why I am still getting this message.

You did not say what type of printer it is, or if you have checked for a piece of paper stuck somewhere in the printer.

Example of possible solution:

https://www.inkredible.co.uk/canon-error-code-6a81-fixed


https://www.inkredible.co.uk/canon-error-code-6a81-fixed

Quoting from web page shown, photo not included in quote:

"Canon Error Code 6A81 - Fixed! We recently came across error code 6A81 on our Canon Pixma MG5250 Printer (using PGI-525/CLI-526 range cartridges). The error could also occur on other printers in this range.
The error code is basically caused by an obstruction within the printer, usually a paper jam but could be any foreign body that has found its way into the printer (those with young children will understand!). The obstruction stops the carriage and print head from moving into the correct position when powering up the printer. The print head should come to rest at the right hand side of the carriage and position itself over the waste ink sponges. If the print head is unable to do so, it returns the '6A81' error message.
You can see from the picture, the position of the two waste ink sponges towards the right hand side. The sponges are spring loaded and move backwards and forwards when the printer initialisation occurs upon start up.
The problem in our case was caused by two pieces of torn paper. One at the far right of the printer which was simple to remove, but the other was stuck in a small opening behind the spring mechanism for the waste ink sponges. This was preventing the sponges from being moved freely and seated correctly, which in turn meant that the print head was unable to pass over them and come to rest in the correct position.
To remove the torn paper we turned off the power to the printer (to prevent any damage to the carriage mechanism) and used a pair of tweezers to carefully pull the offending article through the small gap. We missed this hidden piece of paper the first time we checked for obstructions so it's worth shining a torch in and having a good nose around!
Close your printer lid, power on the printer and et voila... Canon error code 6A81 is no more!"

Error 6A81 is described here: http://www.canon.co.uk/support/consumer_products/product_ranges/printers/pixma/error_codes/#5011
Description
A printer error has occurred.
Resolution

1. Turn off the machine and unplug the power cord from the power supply.
2. Plug the machine back in and turn the power on.
   NOTE- If you disconnect the power plug, all the faxes stored in the machine's memory are deleted.

If the above solution has not resolved your error, please contact your nearest Canon authorised service facility.

It usually means that it needs to be cleaned.
Take out the cartridges and look to see if there is build up.
That normally causes the error.

6A81 means the carriage is blocked by something. Start by checking the following image to verify there are no paper jams.
http://ww2.justanswer.com/uploads/wa94sound/2012-04-25_230949_sdf.png

Reply back and let us know what you find.

Turn off power, remove power cord and wait 10 minutes, then reconnect power cord and turn unit on, if this does not work then advised to contact canon service centre

Bonjour nduvignac
J' essayerais de d?sinstaller puis de r?installer le pilote . D?branche l' imprimante pour ces op?rations , relance ton pc apr?s installation et reconnecte l' imprimante . Si le probl?me persiste , il faut retourner chez le vendeur avec l' appareil et le ticket de caisse .
Cordialement ,
fanaudi .

Please help me I've purchased the pixma iP4800 printer and installed everything do I have to now download softwear so I can lable my DVD's as it's saying the softwears not there??????

I see no one has replied. I have the same issue, and the only info is the manual saying contact Canon service.

Trying to do that, they want the serial number which they make way too hard to get. Why can't the online manual provide it?

Go to Canon MP550 INK Absorber Reset (6C10 Error Code) - YouTube.

Unplug printer power supply from wall or powerstrip. Wait 10 minutes then plug in power supply and turn on printer and try again. If problem persists and it is under warranty contact Canon for repair. Otherwise it might be time to buy a new one.