Disconnect the toner transport tubes in both ends and vacuum them, should resolve any possible build-ups of toner blocking them.
Vacuum the toner-end sensor (at the end of the black plastic thingie the toner is initially fed through).
Vacuum the above mentioned black plastic thingie, you'll understand what I mean when you take off the back cover and swing out the controller box.
Vacuum the toner pumps and clean the toner pump clutches.
Clean the RFID board.
If none of the above solves it, you may have a faulty RFID-board.
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Nobody loves a clown at midnight.
NIGHTMARE FAULT .... Had this on MPC4500, turned out the fault is caused by the toner signal from the NVRam not being altered when the new bottle installed. FIX.. copy NVRam on to SD card. Print SMC report. Print of Non standard data report. Carry out MEMORY ALL CLEAR. Reinstall NON STANDARD settings,( mainly the Scanner settings) as you may have back ground. Time will tell if this has worked. ( some machine just will not have it.) If this is the case turn of toner end detect in sp3 05 ???
Linear Mode
