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

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Suddenly it prints slowly and says error wrong cartridge

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Check to see if the installed cartridge is the correct one for the printer. If the cartridge is the proper part number, remove the ink cartridge and make sure all the packaging tape has been removed from the copper circuitry strip on the backside of the cartridge. Reinsert the cartridge and try printing again.

If the error continues, remove the cartridge again and clean the copper circuitry strip on the backside of the cartridge, and the contacts inside the printer, by following the instructions below:

1. Use a clean, dry, soft, lint-free cloth. Locate the copper-colored circuitry strip on the back of the cartridge.

2. Wipe the copper-colored strip with the dry cloth. Use an upward motion, from the nozzle end to the top of the cartridge. Do not wipe the nozzle end of the cartridge or touch the nozzle plate. Wipe the contacts only once.

3. To clean the printer contacts, carefully look for fibers or contamination on the electrical contacts inside the carriage assembly, but do not wipe the printer contacts with any object. The contacts in the printer can be damaged if too much pressure is applied during a wiping process. Try to remove any visible attached debris within the carriage assembly by gently pulling the debris off with your fingers. If the carriage contacts show noticeable damage, contact the Customer Care Center listed in the printer's User's Guide.

Reinsert the cartridge and try printing again. If the error continues, the cartridge may need to be replaced.

Hope this helps. Please rate my response.
Thanks.
Have a good day.

Posted on Dec 29, 2010

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