Question about Canon PIXMA MP780 All-In-One InkJet Printer
First place to check is that print cartridge. Also make sure the software is set to print in black.
Posted on Oct 17, 2013
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Posted on Jan 02, 2017
SOURCE: Canon Pixma IP4000 5 ink
I spoke to a company called CRC (Tasktron Limited) who are repair specialists for all kinds of business machines. They can be contacted at 01483 776060 or via www.crc-tasktron.co.uk.
After explaining my problem and the amount of use my printer is subject to, they advised me that the printhead was past its useful life. They offered to send me a relacement (£40) which I received today (next day delivery) and fitted in two minutes. Problem solved.
Posted on Dec 05, 2008
Hi it's Gill again. I've been looking around more on the net and I think the problem is our printers need new printheads which I'm told are spare parts easy to change. Hope this helps. Gill
Posted on Apr 03, 2009
i had the same problem and just repeated the cleaning and testing, eventually the black showed up but took more than a few repetitions
Posted on Jun 30, 2009
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