Adf - Dell 3115cn Service Manual

12.2 ADF

Document Sensor
A sensor that detects the presence or absence of a document on the ADF Document Tray.
(Present: Beam is unshielded (unblocked). Absent: Beam is shielded (blocked).)
Cover Open Sensor
A switch that detects whether or not the ADF Top Cover is open.
PWBA ADF
A PWB that controls the sensors and motor in the ADF.
Feed Sensor
The Feed Sensor is installed immediately downstream from the Feed Roll to detect completion of
document feed.
(Document present: Shielded (Blocked); Document absent: Unshielded (Unblocked))
Regi Sensor
The Regi Sensor detects that the preceding document sheet is about to leave the Regi Roll, thereby
determining that the next document feed can be started.
(Document present: Shielded (Blocked); Document absent: Unshielded (Unblocked))
ADF Motor
The ADF Motor rotates the Nudger Roll, Feed Roll, Takeaway Roll, Regi Roll, and Exit Roll.
Version 1 2006.11.21
Chapter 6 Principle of Operation (Scanner)
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