Question about Canon PIXMA MP780 All-In-One InkJet Printer
There really aren?t but three options per Canon: -Reseating the print head -Replacing the print head -Press the ON/OFF switch to reset the device. Cleaning the pins as mentioned and trying new genuine Canon cartridges) are good to try as well; however, the next thing to check is if this printer is still covered by the warranty. If it?s less than one year old or if you?re not sure call Canon and see what they will do, it doesn?t cost anything except time. Everyone wants to save money on labor but the relatively small amount of money you?ll save you could easily loose by experimenting. I?m hoping you don?t flame me for this (I post to help, not make money) but a new print head is going to cost around $50 and might not even fix your problem. Unless you have access to a printer you can use for parts my suggestion is to not invest any money on buying parts unless you are absolutely sure the part will fix the problem. Instead I would suggest you have a local authorized shop take a look at it. Most will change a modest evaluation fee ($30-$40 that typically is applied to the repair cost) and they can tell you what it will cost to fix. Add to that the typical 90 day warranty as well.
Posted on Jun 25, 2007
Canon never released what caused this however it was NOT resettable or servicable. It affected around 1 in 3 mp780s & also similar units that used the same circuitry, needless to say tens of thousands were just thrown out & Canon got a get out of Jail free card but it didn't do the next couple of years sales much good.
Having said that, there is NO manfacturer that hasn't had a similar problem on a specific model at some time, naturally they don't advertise that fact.
Canon was lucky because many units failed out of warranty.
Happy printing all
Posted on Feb 19, 2011
Your print head is bad. You can purchase a print head straight from Canon @ 1-800-828-4040 and install it yourself.
Posted on Jun 25, 2007
You can continue to say that the suggested actions are not solving your issue but the truth of the matter is that you're not going to find a 'magic' solution. You're going to have to replace the print head an that's the only solution to this issue.
I'd actually cal Canon as this problem can be related to an issue they cover even if out of warranty.
Call that 1-800 number and talk with them about checking the unit out....and be persistent. They do concessions on out of warranty items....see what they'll offer....
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Remove the ink cart and the print head for all of the colors. Reseat and reinstall all colors then run the printer maitinence. If it still comes up with the error, replace the print head. Cannons are known for the head problems. Hp and Lexmark always have new head with new cart to avoid this issue.
Posted on Jun 22, 2007
An expert who has achieved level 2 by getting 100 points
Ok, Now open up the printer where you put the cartridge, get a dry peace of cloth and start cleaning the metal pins that align to the printer cartridge. You may use some perfume to make more clean. This what have caused the printer to prompt "Wrong Cartridge" Good Luck
Posted on Jun 19, 2007
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I cleaned the pins still says wrong cartridge
I DID replace the print head, $100.00 later the error message remains the same
I replaced the print head and put new oem cartridges in it and cleaned the pins as directed. I have reseated the print head and restarted the unit multiple times. The nearest authorized repair place is nearly 100 miles away from me and I am disabled, so I guess I will just have to throw it away.
Wrong cartridge message. I changed the cartridges but sill get the message
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