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

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Canon MP780 wont scan

Printer wont scan from computer every thing else is fine but when i try to scan a message comes up saying cannot communicate with scanner

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Re: canon MP780 wont scan

Download and reinstall scanner software and scan driver

Posted on Nov 01, 2007

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My PIXMA MP780 always says "Warming Up" when I try to fax or scan. It never warms up. The machine prints fine- doesn't do much else.

Paper feed roller
When paper does not feed properly.
To clean the paper feed rollers.
Machine buttons
2 min.

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

1 Answer

Canon Pixma MP780 printer wont turn on

Dear sir,
This problem printer power supply or power adoptar is out of order or fuse is burning
please chack it and solve this problem

Aug 27, 2009 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

When i scan on my Canon Pixma MP780 printer i get a red line down

This is what the service manual says:
(1) Clean the Document glass.
(2) Check the connection
between the contact sensor
and SPCNT board (JCCD1).
(3) Replace the SCANNER
(4) Replace the SPCNT board

Jun 11, 2009 | Canon PIXMA MP780 All-In-One InkJet...

4 Answers

When Trying To Scan, ScanGear Message Comes Up Saying Cannot Comminate With Printer.

Make sure the "Still Image Service" is running on your system. Right-click "My Computer", select "Manage", then open "Services" applet. Scroll down to the "Still Image Service", right-click it and set its properties to "Automatic", then right-click it and "Start" it.

Nov 08, 2008 | Canon PIXMA MX310 All-In-One Printer

2 Answers

USB malfunctioned message

1)right click the my computer icon
2)click properties and then click hardware n go to device manager.
3)uninstall all usb ports and then scan for hardware changes
4)ur pc will detect your printer and ask for printer drivers
5)re load drivers and your pc will communicate with your printer
6)for reloding install the cd follow the instructions on the screen and click next
7)restart when the printer is loded.connect the wires and cords properly

Nov 06, 2008 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

Scan Problem

try using a lower resolution for your scan... also this is a known problem for windows vista what o.s. are you using?

Jul 25, 2008 | Canon PIXMA MP160 All-In-One InkJet...

1 Answer

Computer can't find scanner

please try by reinstalling the scanner driver.plz post your findings

Apr 09, 2008 | Canon PIXMA MP780 All-In-One InkJet...

5 Answers


Here is what I did and it now works just fine.I turned off the printer and unplugged the power cord, and unplugged it from my computer. I then removed all the ink cartriges and removed the print Head I got some rubbing alcohol put it on some toilet paper and wiped down the back and bottom of the print head.Plugged everything back in and It now works better then ever.

Feb 08, 2008 | Canon PIXMA MP780 All-In-One InkJet...

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