[Electrical] MPC2500 no add toner

[emir]

Hi pls help me.My ricoh mpc 2500 after replacment all toner show black intebendent toner cetrige.Fife times i go on services but not solved.PLS Help
I change pump,nozzle,sensors,elec.board old bottle,new developer nev pc drum,belt,laser but no helping.
I printed 200cop and show sc360 black td sens.i chenge.

Thx for help