Xerox Phaser 6121MFP Service Manual page 49

Phaser 6121MFP Service Manual
Thermistors
Thermistors have a known value of resistance whose value varies with
temperature. Used primarily in the Fuser for temperature sensing.
Sensors in the Paper Path
The following illustration identifies the various sensors located along the paper
path of a printer equipped with the Lower Feeder Unit and Duplex Unit. Error
reporting is dependent on these designators. Error detection is based on paper
transport timing through the sensing area.
Item Description
1 Exit Sensor
2 2nd Image Transfer Retraction Position Sensor
3 Registration Sensor
4 Media Empty Sensor
Theory of Operation
1
2
3
4
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