Dell 3110cn cycling though 093-919/093-920/093-921/093-922 toner errors at start up.

Hi

Lucky owner of the dell 3110cn printer that has been working for 16 years or so, the printer suddendly refused to start with a 093-919 error. The Yellow toner is a genuine Dell (can not be found anymore) half filled.

I tried removing and re inserting Y toner, the error changes to 920

Did the same with M toner, changes to 921

Did the same with C toner, changes to 922

Did the same with K toner, back to where it started.

Try playing with the non Dell toner parameter, no effect.

Try reseting NVRAM, same.

Don't know how to solve that. Does anyone has the faintest idea of the cause of the problem ?

Is my printer dying or can it still be saved ?

Thank you very much for your help