Xerox Phaser 7500 Service Manual page 112

Theory of Operation
STM T/A Motor Assembly (PL11.5.2)
Tray 3 Feed Out Sensor (PL11.6.3)
STM L/H Cover Switch (PL11.6.5)
STM PWB (PL11.5.4)
2-52
The STM T/A Motor Assembly drives the SMT T/A Roll Assembly.
Tray 3 Feed Out Sensor detects whether paper was fed from the Single Tray
Module (STM).
Note
No paper: Sensor blocked
The STM L/H Cover Switch detects the open/close state of Left Hand Cover of the
Single Tray Module (STM).
The STM PWB controls all STM components.
Phaser 7500 Printer Service Manual