COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 2001SERVICE MODES-24COPIER>I/OIndicates the input/output port of the DC controller PCB.Address bit Description Notation RemarksP001 0 right deck pickup sensor PS20 1: paper present1 left deck pickup sensor PS25 1: paper present2 cassette 3 pickup sensor PS37 1: paper present3 cassette 4 pickup sensor PS42 1: paper present4 vertical path 1 paper sensor PS47 1: paper present5 vertical path 2 paper sensor PS49 1: paper present6 vertical path 3 paper sensor PS41 1: paper present7 vertical path 4 paper sensor PS46 1: paper present8 right deck feed sensor PS27 1: paper present9 left deck feed sensor PS26 1: paper present10 manual feed sensor PS35 1: paper present11 registration paper sensor PS5 1: paper present12 inside delivery sensor PS9 1: paper present13 outside delivery sensor PS10 1: paper present14 fixing feed unit outlet sensor PS11 1: paper present15 fixing claw jam sensor PS6 1: paper presentP002 0 reversal sensor PS16 1: paper present1 duplex reversal sensor PS12 1: paper present2 U-turn sensor PS13 1: paper present3 pre-confluence sensor PS14 1: paper present4 post-confluence sensor PS15 1: paper present5 not used6 not used7 not used8 DDI9 DDI10 not used11 not used12 not used13 DDI14 DDI15 DDIP003 0 hopper inside toner sensor TS1 0: toner absent1 hopper inside toner lower limit sensor TS2 0: toner absent2 developing assembly inside toner sensor TS3 0: toner absent3 fixing web length sensor PS7 1: web absent4 fixing web length warning sensor PS8 1: web absent warning5 cartridge detection MSW1 0: present