Originally Posted by
methogod
If you eliminated the IU and the toner --- its got the be the hopper...
We had the same thing happen to the YELLOW toner hopper...
I would vacuum it out well its deep and holds a lot of toner, even though its small... See if the sensor comes back after a complete reboot.
If it still reads as empty, i would then do the follow...
if you have a parts machine you can rebuild it, or if you have a know all parts are good, i would swap the entire assembly, at least to test.
After taking it apart, we couldn't find anything wrong - no motor issue, gear issue, so must of been the sensor. So we swapped all 4 hoppers.
We ruined 2 IU before figuring it out.
Also you can eliminate the toner hopper auger motor unless its both the black and the magenta. The toner auger motors are 2 motors that drive 2 clusters of gears (Y/C and M/K), so when 1 fails they both fail.
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