MP9000 machine indicates waste toner bottle is full when both of them are emptied, we have removed the side cover (faces finisher and at the bottom cleaned the black wheel gear and sensor, cleaned sensor at the pump unit and have also done sp 2972 and set it to 0 the user made over 9000 copies and the error is back at least I made the machine last longer today but I have been there 5 times in 3 days I have already ordered the sensor, and a new waste toner bottle.
Any other advice is highly appreciated
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