CHAPTER 2 OUTLINE OF OPERATION
COPYRIGHT © 2001 CANON INC.
2000 2000 2000 2000
CANON DADF-H1 REV.0 MAR. 2001
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2.3.2 Detecting the presence or absence of a document in the document
pickup tray
The document set sensor (PI10) detects the presence or absence of a document in the
document pickup tray.
When a document is paced in the document tray, the detection lever works in synchroni-
zation with the shading plate to uncover the photointerrupter. This allows the document set
sensor (PI10) to generate a document detection signal (EMPS) for transmission to the ADF
controller PCB, which turns on the Document Set LED on receiving the EMPS signal.
F02-203-01
ADF controller PCB
Document
Detection lever
PI10
EMPS
Summary of Contents for DADF-H1
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