CHAPTER 2 OUTLINE OF OPERATIONCOPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON DADF-H1 REV.0 MAR. 2001 2-172.3.2 Detecting the presence or absence of a document in the documentpickup trayThe document set sensor (PI10) detects the presence or absence of a document in thedocument 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 setsensor (PI10) to generate a document detection signal (EMPS) for transmission to the ADFcontroller PCB, which turns on the Document Set LED on receiving the EMPS signal.F02-203-01ADF controller PCBDocumentDetection leverPI10EMPS
