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

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Printer will not print in Black ink cartridg are full. what gives

Printer will not print in Black ink cartridge are full. what gives what do i need to do to get it printing again. color works fine.

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Both blacks are in your print driver test pattern?
Go into the maintence menu and choose nozzle check.
It should rint a test pattern with the first grid being labled "PGB" if not your head is clogged.You can tru a solution of 20-25% ammonia to water and soak the black print head for a half an hour.Then completely dry the electrical contacts and re-install.
If that does not do it I have a more aggressive solution that requires a baster.

Posted on Jun 17, 2009

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Posted on Jan 02, 2017

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