Lexmark C720 Service Manual - Page 353

5024-001 Name Oil Sensor OHP Sensor Drum Paper Jam Sensor Drum Encoder Sensor Photo Belt Sensor Toner empty sensor Waste Toner Sensor Home Position Sensor Cleaning Roller Sensor Temperature Sensor for Fuser Unit Exit Paper Full Sensor Toner Key Sensor Code Function OIL Photo sensor to detect whether the fuser unit oil is empty or not. OHP Photo sensor to detect whether paper is loaded in the paper drawer. DPJ Photo sensor to detect whether paper is winding around the transfer drum. (HPSEN) Photo sensor to detect irregular rotation of the transfer drum. PBS Photo sensor to detect the connecting position of the OPC belt. TPD/TTR Photo sensor to detect whether toner is empty for each toner cartridge. WTS Photo sensor to detect whether the waste (LED/TR) toner bottle is full. GHP1, GHP2 Photo sensor to detect the early position of the toner cartridges. FCS TH Photo sensor to detect whether the cleaning roller is available in the fuser unit. Thermistor to detect the fuser temperature. PFUL TNK Detects that the paper exit tray is full. Detects the availability of a key to be provided to the toner cartridge. Locations 5-5