For Xerox® models: 4110, 4110EPS, 4112, 4112EPS, 4127, 4127EPS, 4590, 4590EPS, 4595, 4595EPS
Toner Dispense Repair Kit **(Dispense Coupling, Toner Shutter Stopper/Opener, Sensor Cleaning Spring Assembly & Toner CRUM Chip)
The Sensor Cleaning Spring is critical as it slides across and scrapes toner off the face of the Low Toner Sensor. When this piece fails, the toner builds up, and the sensor fails to see the toner presence in the dispense auger chute.
Notice the correct position/orientation of the angle of the spring on the sensor cleaning spring assembly in the photo below. This photo shows one installed in the toner dispense assembly. We have heard reports of these being installed backwards on brand new OEM assemblies, resulting in the toner dispense error coming back shortly after installation.

A hardy "Thank you"! to our friends at Old Pioneer Press for providing the photo and saying "ok" for us to use it here.
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