To follow up on this... the new Cyan bottle arrived. Until now I'd been using the printer with the Toner End Detection set to 1. Before installing the new Cyan bottle, I tried changing Toner End Detection back to 0 and it now detected the existing Cyan bottle (albeit only at about 1/3 full, which is much less than it should have been as the bottle was brand new 3 weeks ago with very little printed since). I used the printer like this for a couple weeks.
Today it said Cyan was empty (even though I can feel lots of toner inside). I switched bottles to the brand new one, and it tried loading toner but still said it's empty.
I've set Toner End Detection back to 1 again and stuck with the first bottle. I'm going to run until the Cyan starts to fade.
I'd really like to get the printer working properly again, though. From comments above it sounds like either it needs a new RFID board or pump. Is there a way I can rule out which one of those it is?
Thanks, grateful for any help!
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