I have a c1765nfw all-in one printer. A few days ago I noticed it was printing pretty light. I took the cartridge (black) out and shook it a few times. Put it back in the printer. I restarted the printer and the message came up that the cartridge was empty and needed to be replaced. I did not believe this as it is not that old. Nonetheless, I got a new cartridge and put it in the printer. Giving me the same message "Replace Cartridge."
What is odd is that there were no messages prior to this telling me the cartridge was low, etc.
I did not find anything in the pages listed. I have an error code of 093-933. I have turned off the printer pulled the power cord and cable, reinstalled and restarted. No change. Also dusted out the area around the cartridge. I also got into the customer mode buy have not figured out how to detect anything useful.
I am fooling around a bit. I inadvertently ejected the cartridge while the printer was "on". I pushed the cartridge in slowly. As I was pushing it in, just before it snapped the display got back to normal printing mode. Then about a second or two after it went back to error code. Got to be something with the cartridge, chip or seating of the cartridge.
This can be one of three problem. First the toner sensor that detects the toner in the printer there is a test that you can run in customer mode that will let you test the functionaliy of the sensor. next the toner developer housing, the part that the toner sits down on, if you can find information on that part, you might need to reseat it . And lastly the MCU (machine control unit). If that card is bad, it will throw errors.