Dell 5110cn Color Laser Printer Service Manual - Page 543

Chapter 6 Principles of Operation 3.2 Paper Feeder 3.2.1 Major functions - SWITCH ASSY SIZE SWITCH ASSY SIZE detects paper size and existence or non existence of the paper tray. SWITCH ASSY SIZE ACTUATOR SIZE - SENSOR PHOTO (No Paper Sensor) GUIDE ASSY END ACTUATOR GUIDE END Ten06042KA Detects existence or non existence of paper in the paper tray based on the position of ACTUATOR NO PAPER. (No paper: Sensor beam is intercepted) - SOLENOID FEED Controls operation (rotation/stop) of PAPER FEED ROLLER by controlling the rotations of the GEAR FEED. - CLUTCH ASSY TURN Transmits the drive from the MAIN DRIVE ASSEMBLY to ROLL ASSY TURN. - PAPER FEED ROLLER When the SOLENOID FEED operates, the GEAR FEED and GEAR IDLER FEED are engaged by the force of the SPRING FEED. Under the drive from the MAIN DRIVE ASSEMBLY, the PAPER FEED ROLLER starts rotating and the ROLL ASSY (PICK UP ASSY) sends paper. After having rotated one turn, the GEAR FEED and GEAR IDLER FEED are disengaged at the notch of the GEAR FEED, no drive is transmitted any more, and the PAPER FEED ROLLER stops rotating. Thus sheets of paper is sent out one by one. GEAR IDLER IN PAPER FEED ROLLER GEAR IDLER FEED GEAR FEED 2 GEAR FEED H2 GEAR FEED H1 GEAR FEED 2 SPRING FEED H PAPER FEED ROLLER - ROLL ASSY TURN SOLENOID FEED Ten06043KA The ROLL ASSY TURN rotates by the drive from the MAIN DRIVE ASSEMBLY through the CLUTCH ASSY TURN to feed the paper from the paper tray to CHUTE ASSY REGI (Regi Roll) (refer to "3.7 Xerographics"). - SENSOR HUM TEMP Detects temperature and humidity in the printer. The printer corrects the charging voltage, the voltage supplied to the transfer rolls, and the developing bias based on the detected temperature and humidity. 6 - 24