Fs-1135 developer unit not installed

[n25an]

Machine was springing a c3100 error...
fixed that by unlocking adf...

getting a developer is not installed error...

I have a drum and developer unit on the way...
I am also getting a toner cartridge...

I am checking if anyone had this issue before and can recommend any other options...

[tmaged]

Replacing the toner cartridge should take care of it, preferably OEM. There was a thread on this a few weeks ago.

[n25an]

thanks