Ok, machine asks for toner, I know all about the pump. I can run force toner and watch td sensor and it adds just fine. A day later it is asking again. Any thoughts?
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Re: MPC4500 toner problem, not typical
Pump first and if that did not resolve the problem make sure the new hose that comes with the pump gets replaced (could be a slight blockage). Depending on the total volume on the machine (typically 500K to 1000K range) I have had several of the PCU Motors (AX060308), Dev Clutch (AX200300), Development Shaft (B2231148), Gear (AB010367) give problems but normally it was noisy first . I have had to replace the entire Drum Drive Unit (B2231127) because of a stripped gear internally. There is also a small gear inside the PCU/Dev cavity at the rear (AB010368) that can give problems as it drives the Dev Unit.
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