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

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No power. Replaced pwr. cord.

Canon MP780 all-in-one stopped working after pwr. cord unintentionally pulled out while in low pwr mode. Will not turn on.

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Check that the power cord has been properly attached and that no damage has occurred. Also try another outlet on a different circuit.

Posted on Jan 29, 2009

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2 Answers

How to reset error e4


The reset method work for canon printers that using PG-40 and CL-41 cartridge. After doing this reset method canon printer will not display low ink notification anymore and will not show error code “E4′ or “E5′.
Here How to Disabling Low Ink Level Notification for Canon IP and MP, the method to reset ink level notification:
  1. Push “resume” for 5 seconds for canon IPXXXX. For canon MPXXX you must enter to service mode.
  2. Push Power switch then remove power cord.
  3. Insert plug power cord while pressing “power switch” at the same time.
  4. Push Start/reset by step 2 continue Wait display shown “0′
  5. Push + change display from “0′ to “1′
  6. Push color button 2 times
  7. Push Power switch again , Printer will print 1 page
  8. Open cover
  9. Unplug power cord
  10. Take out ink cartridge #40 and #41
  11. Insert plug again
  12. Push power switch
  13. Open cover (scan cover)
  14. Insert ink cartridge #40 and #41 again
Enter to service mode for canon MPXXX
  • With the printer powered off but connected to a power source, press the Power button while pressing and holding the Stop/ Reset button.
  • When the Power is lit, press the Stop/Reset button two times while pressing and holding the Power button.
  • When releasing the Power button and the Stop / Reset button (regardless of order), the printer will move into a service mode. (Waiting for menu selection)


Apr 15, 2010 | Canon PIXMA MP210 Photo All-In-One Printer

1 Answer

Pixma MP780 Can't turn on


If you printer will not turner on, plug it into a different know working outlet.
There could be physical problem with your printer or the power cord / supply could be supplying faulty power or none at all.
Send it back if you can,

Nov 08, 2009 | Canon PIXMA MP780 All-In-One InkJet...

2 Answers

Stopped working...is it a fuse wrapped around the power cord that could be faulty?


no that is a graphite ferrol just to cut down noise it may receive from other devices. check the voltage with a meter on the power supply. If it plugs direct into a/c from the wall, the power board is most likely bad in printer. then it's a throw away.

Oct 22, 2009 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

It stopped working suddenly. It does not respond


Sometimes when the printhead goes bad, it keeps the printer from turning on. Try removing the inks and printhead and turn on. If it comes on, replace the printhead with a new one and don't put the bad one back in. The printhead is QY6-0049-000 about $50.00

Oct 02, 2009 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

I have no power to the printer to my canon pixma mp780. why? Saw another on E-bay with same problem. Cord is Ok - checked it w/ meter.


This is what the service manual says:
(1) Check the power cord
connection.
(2) Check the connection between
the SPCNT board (JPSU1) and
power supply unit.
(3) Replace the power supply unit.

Aug 13, 2009 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

My canon Pixma MP780 suddenly would not turn on, after 3 years. Checked the cord, changed wall plugs, the lights flashed but then went dead. Help, pleeze


(1) Check the power cord
connection.
(2) Check the connection between
the SPCNT board (JPSU1) and
power supply unit.
(3) Replace the power supply unit.
That's what the service manual says for your problem!

Jul 06, 2009 | Canon PIXMA MP780 All-In-One InkJet...

3 Answers

Pixma MP780 Can't turn on


To move the print cartridge without power to the printer: Grab it with your hand and slide to the middle. It may offer slight resistance and while not an expert, I doubt damage will be caused.

Feb 03, 2009 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

My Canon MP780 will not power on.


This is what the service manual says;
(1) Check the power cord
connection.
(2) Check the connection between
the SPCNT board (JPSU1) and
power supply unit.
(3) Replace the power supply unit.

Jan 05, 2009 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

Cannon pixma 780


is your printer under warranty? If yes, ask warranty cover please.

Sep 23, 2008 | Canon PIXMA MP780 All-In-One InkJet...

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