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

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The Black ink cartridge (3e) ran out of ink. I removed the cartridge and sent my wife to the store to get a replacement. while she was gone, I had forgotten that the cartridge was missing and tried to print a document which of course did not print. Upon her return I installed the new cartridge and it still will not print. It just spits out blank paper. What do I do now?

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Many printers require you to print a test page and go through a process to align the new cartridge. If you haven't done this I would suggest this as your first step. This will confirm if the printer is working.

If still no joy, disconnect printer from computer, uninstall it then reinstall it. Can often save hours of messing using this method.

Posted on Apr 28, 2010

Testimonial: "Running a test and cleaning the heads indeed did solve the problem. Thanks!"

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Thanks for getting back to me.
Sorry this ain't a solution but it seems to be the only cash-free way to contact you. No problem not solved - though I have tried everything. Dismantled the printer; washed, dried and replaced the waste ink pads; washed the print head; blew compressed air through the print-head sponge; replaced the cartridge 3 times; printed hundreds of test prints. I can't think of anything else to do and so I think the only solution is to replace the printhead (probably not even available) or replace the printer. The latter is looking most likely.

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