Question about Canon PIXMA MP780 All-In-One InkJet Printer

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Canon pixma mp780 getting memory

Hello ,
I have received a fax and it has gone into my memory. I can not retrieve it!!!. Also it keeps telling to change paper to a4/tr/lgl plain. I have paper in both locations.

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Re: canon pixma mp780 getting memory

Open printer properties click paper to use /paper size then okey

Posted on Jan 10, 2008

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My canon pixma mp780 is not responding. I unplugged the cable and replugged in, turned off the computer and it still is not reponding.

Make sure that your computer still sees the printer. Go to printers & faxes and check. If it is gone reinstall software.

Sep 18, 2010 | Canon PIXMA MP780 All-In-One InkJet...

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Trying to receive a fax. Display says

You have to cancel the fax. If its saying that then the paper sent to you was a legal sixe 8.5x14 and needs that type paper to receive the fax. Some faxes have legal trays and A4 but most don't.

Dec 16, 2009 | Canon PIXMA MP780 All-In-One InkJet...

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Printer is not working

It is possible that the FAX in the memory is causing the problem. Try unplugging the printer from the wall and leave it off for a minute or two to see if it will clear the memory

Dec 14, 2009 | Canon PIXMA MP780 All-In-One InkJet...

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Getting fax in memory out of the Canon 780

Canon does not offer any sort of recovery which is really sad, while the fax is still in the ram, its in full binary which is unreadable to the human eye so even if you could dump the ram/cache it would be rendered useless.

Sorry but this is hard fact.

Oct 12, 2009 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

Deleting scanned information from all-in-one printers' hard drive

The Canon doesn't have a hard drive, it only stores images until they are printed and only in flash memory. There will be no personal information left on it if you discard, unless you have phone numbers stored in fax memory.

Sep 17, 2009 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

Cannot recieve or send faxes

Check out the Easy Setup Instructions available here. If you can neither send nor receive faxes, you may not have the phone line connected to the correct port, see page 34 of the guide. Also check what receive mode the machine is set for. Pages 42 and 43 explain the different options and how to change the receive mode.

Mar 16, 2009 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer


you need to print this fax out of memory.

1 Press [FAX], then press [Menu].
2 Use [ ] or [ ] to select <MEMORY REFERENCE>.
3 Press [OK].
4 Use [ ] or [ ] to select <PRINT DOCUMENT> or <DELETE DOCUMENT>.

If you select <PRINT DOCUMENT>:
1. Press [OK].
2. Use [ ] or [ ] to select the transaction number (TX/RX NO.) of the document you
want to print, or enter the number using the Numeric Keys.
If you are unsure of the transaction number, print the DOC. MEMORY LIST. (See page 94.)
3. Press [OK].
4. Press [ ] to print the first page only, or press [ ] to print all pages of the
5. To print another document, return to branch-step 2, or to finish printing, go to step

Oct 27, 2008 | Canon PIXMA MP780 All-In-One InkJet...

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We cannot receive or send faxes

hello dmhertz

anything here that may help Canon .


May 12, 2008 | Canon PIXMA MP780 All-In-One InkJet...

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Fax problem

tk, Unplug the printer from the electrical source for 2 minutes or so.(i.e. wall plug)Plug the printer back into the wall and turn it on...That should clear the machine to get it to a workable state. this site should be able to help you. Good Luck, Tim

Feb 03, 2007 | Canon PIXMA MP780 All-In-One InkJet...

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