October 2012
8-8
ColorQube 8570/8870 Service Manual
Paper Path of the Printer, Sensors
Revised, 3rd Revision - Xerox Internal Use Only
Theory of Operation
The Preheater Lift Solenoid, mounted to the Transfix Load Module, increases the physical
spacing between the Preheater Plates when printing the second side of duplex prints. The
increased spacing prevents the paper from rubbing as hard against the Plates, which can
potential cause smearing to occur.
Figure 7 Preheater Components
Sensors
The printer contains Sensors of various types that perform a variety of functions. One group of
Sensors track the progress of the paper along the paper path, and detects if a paper jam
occurs. Other Sensors detect the presence of the Ink Sticks, stop printer activity if a door is
open (interlock), detect the presence and size of media, and monitor printer temperatures.
Figure 1 Sensor Locations
Summary of Contents for COLORQUBE 8570
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