Dismantling a Canon MP780/MP760 Printer to replace the Waste Ink Pads

[ghwellsjr]

The message "Put in cartridge" refers to the print head, not the ink cartridges. These older printers cannot tell when you put new cartridges in them. I have never seen or heard of a situation where an MP780 incorrectly tells you to "Put in cartridge" when the print head is already installed. Therefor, it appears that there is a hardware problem, maybe a connector not plugged in or plugged in incorrectly or something burned out.

I also don't know what the clicking sound is. You will probably have to take the printer apart again and see if you can identify something not put together correctly.

 

[GraeneyMac]

Many thanks for putting your mind to this.

Irrespective of which mode copy /fax /scan /photo I put the printer into the same message 'Put in cartridge' appears. It is only when the computer is linked to the printer that the clicking sound - from around the motor area I would say at best guess - starts. I will probably have to reinvest but I would like to solve this anyway.