Envelope Feeder Control - Xerox DocuPrint N24 Service Manual

8.3.6.2 Envelope Feeder Control

Envelope Feeder Control is a broad term that is used to describe the printer resources that monitor and
control the actions and operations of the printer and the Envelope Feeder; from envelope feed to
Envelope Feeder error detection.
The center of Envelope Feeder control is the Envelope Feeder PWB. The Envelope Feeder PWB
provides the logic and information processing that is necessary for the Envelope Feeder to function.
Every electrical component within the Envelope Feeder is connected to the Envelope Feeder PWB.
Sensors in the Envelope Feeder send status information to the Envelope Feeder PWB. The Envelope
Feeder PWB processes that information, shares it with the Printer Engine Controller PWB, and
compares it to timing tables stored in ROM. Acting on the results of the processing, the Envelope Feeder
PWB sends commands to the various Envelope Feeder components; switching on the Motor or
switching off the clutch.
Envelope Feeder Control Components
1 Envelope Feeder PWB
The Envelope Feeder PWB controls all Envelope Feeder functions, executes commands sent by
the Printer Engine Controller PWB, and sends information back to the Printer Engine Controller
PWB.
2 No Paper Sensor
Monitors the envelope level in the Envelope Tray.
3 Size Sensor
Monitors the envelope size loaded in the Envelope Tray.
4 Feed Sensor
Monitors envelope travel out of the Envelope Feeder.
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