
AR-651/810 COMPONENT LAYOUT & FUNCTIONS 2 - 18
(2) Sensors and switches
S1-1 – APS 1-5 Original size detection (B-2)
S1-5 Automatic original detection sensor
S2 HOME-SNR Carriage home position detection (B-2)
Carriage home position sensor
S3 TR-SNR 1 Paper detection at the duplex [D]
Transport sensor 1 paper transport path
S4 TR-SNR 2 Paper detection at the duplex [D]
Transport sensor 2 paper transport path
S5 TR-SNR 3 Paper detection at the duplex [D]
Transport sensor 3 paper transport path
S6 WEB-SNR Cleaning web take-up amount [E]
Web detection sensor detection
S7 FUS-EXIT-SNR Paper detection at the fuser unit [E]
Fuser unit exit sensor
S8 MAIN-SW ON/OFF of the copier AC power (F-5)
Main switch supply
S9 DOOR-SW Turning OFF of the AC power supply (F-5)
Front door switch when opening the front cover
Interlock switch
S10 EXIT-SNR Paper detection at the exit section (F-3)
Exit sensor
S11 RVS-SNR
Paper detection at the reverse section
(F-3)
Reverse sensor 1
S12 RVS-SNR
Paper detection at the reverse section
(F-3)
Reverse sensor 2
S13 EXIT-COV-SW Left door cover open/close detection (F-3)
Exit cover switch at the exit cover
S14 DEV-SW Detection of the developer unit (F-3)
Developer unit switch presence or absence
S15 TNR-SW Toner cartridge detection (F-3)
Toner cartridge switch
S16 DRUM-SUF-SNR Detection of the drum surface (F-3)
Drum surface potential sensor potential
S17 ATTNR-SNR Toner density detection (F-3)
Auto-toner sensor
S18 TNLVL-SNR Toner adhesion amount detection (F-3)
Image quality sensor
S19 CH-HOME-SW Detection of the wire cleaner home (F-3)
Wire cleaner home position switch position
S20 MID-TR-SNR Paper detection at the feeding section (F-3)
Intermediate transport sensor
S21 RGST-SNR Paper detection at the registration (F-3)
Registration sensor section
S22 TR-BELT-SW 1 Transfer belt release position (F-3)
Transfer belt release switch detection
Symbol Name Function Remarks
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