CHAPTER 4 MAINTENANCE AND INSPECTIONCOPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON DADF-H1 REV.0 MAR. 2001 4-54.3 rollers and Guides4.3.1 Blank paper feed cleaningTo clean internal ADF rollers (read roller 1,read roller 2), feed blank paper with thehost set in service mode upon each passageof 40,000 sheets.1) Set 10 A4-sized sheets of blank paper inthe document pickup tray.2) Detach the rear cover.3) Set the DIP switch (DSW1) on the ADFcontroller PCB as illustrated and pressthe push switch (PSW1), and the ADFwill deliver all blank sheets from thedocument pickup tray before it comes toa halt.4) Repeat the above sequence five times.F04-403-01LED4LED2LED3LED1DSW1PSW1
