Fuji Xerox DocuPrint M355df Service Manual page 546

Chapter 10 Principle of Operation
10.11 Functions of Major Functional Components
Scan Sensor
Duplex Sensor
DADF Motor
Cover Open Sensor
Document Sensor
ZaA10003AA
DADF ASSY (PL21.1.1)
Document Sensor (Tray Sensor)
A sensor that detects the presence or absence of a document on the DADF Document Tray.
(Presence: entrance of light, absence: NO entrance of light)
Cover Open Sensor (DADF Cover Sensor)
A switch that detects whether or not the DADF Top Cover is open.
(Open: entrance of light, close: NO entrance of light)
Scan Sensor (Feed Sensor)
Located near side of the Takeaway Roll and detects the scanning timing.
(Presence: entrance of light, absence: NO entrance of light)
Duplex Sensor (DADF Duplex Sensor)
Detects that a reverse side of a document is nipped into the duplex feed path by the torque of the
Transport Roll, after scanning the front side of the document is completed and then the document is
reversed. (Presence: entrance of light, absence: NO entrance of light)
DADF Motor
The DADF Motor rotates the Nudger Roll, Feed Roll, Takeaway Roll, Transfer Roll, and Exit Roll.
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