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

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Canon mp780 paper feeder will not feed, what causes this and can it be fixed?

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Normally this can be caused by
1.) damaged gears
2.) damaged feeder motor
3.) damaged paper holder(the pins that grab the paper)

in any of the above cases you will need to take apart to see what the problem is.. if its the motor then you can change it..
if it with the feeder it self id suggest you consider buying a ney one,, even if you manage to change the gears or the feeder pins you may never be able to get it to pull correctly, eighter pulling twisted or constantly causing paper jams.. The choice is your but i'd say buy a new one

Posted on Jul 09, 2008

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Hi my printer PIXMA MP780 all in one is not working when switched on it gives me the erra message ##357. everything is on but its not working. Please help


357 ASF paper feed (AP) position error
Cause: An error occurs at the AP positioning in the ASF (Auto Sheet Feeder) unit.
Solution: (1) To reboot, press [OK] button or turn off and then on the power.
(2) Replace the SHEET FEED ***'Y.
(3) Replace the SPCNT board.

Nov 16, 2010 | Canon PIXMA MP780 All-In-One InkJet...

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The paper feeder wont do it's job,will not feed paper . Makes loud noise but no action, then screen asks to load paper.


The feeder on this model has 1 weak mounting place for the gears that drive the feed roller. The plastic stud that holds the gear will break off of the frame and cause the noises you hear and no paper feed. The only fix is to replace the sheet feeder assembly, about $30.00 for the part.

Feb 21, 2010 | Canon PIXMA MP780 All-In-One InkJet...

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Does anyone know how to fix error code #357 with regards to CanonPixma MP780. I cannot get it to print even after changing the ink cartridge...the display keeps flashing "CHECK PRINTER" Please help


Hi
The most common cause of this error, is the purge unit being blocked somehow (small piece of paper, dried up ink, etc.), however, it IS indicated as a paper feed position error, and as such CAN be related to internal mechanical timing on the sheet feeder unit, or positioning of the purge unit in accordance to the positioning of the sheet feeder unit.

My first bet would be to take a flash light, open the top cover, and move the printhead to the far left, checking the purge unit for any visible obstructions or clogging ink
All Best: Pineworks

Jan 23, 2010 | Canon PIXMA MP780 All-In-One InkJet...

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I have a canon pixma mp780 all in one printer. It keeps saying add paper but the paper tray is full.


Check the feed switch, you can put paper in the bottom tray or the top feeder and you press the feed switch to change from one to the other, when the rollers are dirty and paper doesn't pick up you also get that error.

Jan 14, 2010 | Canon PIXMA MP780 All-In-One InkJet...

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Canon all in one pixma MP 780 problem code ##357


Hi

This is an error message which refers to the position of the paper feed unit,or if the sensors that detect the paper is malfunctioning.

Take out all the papers,fan them a little and also unplug the power cord from the printer
Now,press the power button on the printer and hold it for 15 sec,to perform a power flee.

turn on the printer put,the papers back and check if it works out

it is possible to fix if you have 3 to 4 hours to kill, you have to dissasemble the printer completley and split the main unit inside into two(sheet feed and cassette feeder) they are connected by 4 screws, correct the timing(marks in red) on the gears auto sheet feeder and cassette feeder on both units and and rotate the cam shaft assembly to the start position

takes time but the fix works.

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

1 Answer

When i turn it(canon MP780)on, i see a error (##357). How can i fix it?


The service manual says this for ##357:
ASF paper feed (AP) position error.
AND ALSO:
##357 ASF paper feed (AP) position error
Cause: An error occurs at the AP positioning in the ASF (Auto Sheet Feeder) unit.
Solution: (1) To reboot, press [OK] button or turn off and then on the power.
(2) Replace the SHEET FEED ***’Y.
(3) Replace the SPCNT board.

Apr 04, 2009 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

Pixma MP780 paper jam


Sandra, on the feed swich which way is the arrow pointing to the front feeder? or to the back feeder? Get a bright flashlight and inspect the back very carefuly. I had the same problem and found a label off of a shirt inside, don't ask me how it got there I havent a clue. But it did fix the problem. You can also try turning it on and off a few times.

If the arrow is pointing to the front paper feeder then the jam is in the front, if it is pointing to the rear that is where there is a problem. Hope this will help. Leo

Mar 15, 2009 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

Old lexmark paper feeder slips


Nooooooooooo . Don't buye new Printer

It simple problem IT paper tray Relay has to be cleaned . Pls clean the Relay with the dry cotton cloth and refit it . It will Work fine ..

Thank You

Feb 18, 2008 | Canon PIXMA MP780 All-In-One InkJet...

2 Answers

Mp780 error code ##357


Try Canon Technical Support-maybe a defective printer to be replaced with a recon unit. failing that try www.fixyourownprinter.com

Jun 19, 2007 | Canon PIXMA MP780 All-In-One InkJet...

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