C-360 indicates from time to time "Replace Toner Bottle M" (or WTTE) and inhibits further operation. Toner bottle is half full, the sub-hopper is also about 3/4 full. Opening and closing of the front door allows machine to continue.
The toner bottle lid opens when inserting, so toner should be able to pass into the sub-hopper. Since this happens occasionally it is hard to say if the toner bottle is not rotating when it should or if the sensor in the sub-hopper is failing to indicate the "full" level from time to time.
Any experience or ideas please?
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