Paper Feeder; Major Functions - Dell 5110cn Service Manual

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.
- SENSOR PHOTO (No Paper Sensor)
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.
- ROLL ASSY TURN
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.
SWI CH ASSY SIZE
AC UA OR SIZE
PAPER FEED ROLLER
GEAR IDLER IN
GEAR IDLER FEED
GEAR FEED H1
GEAR FEED 2
GEAR FEED 2
SPRING FEED H
GEAR FEED H2
SOLENOID FEED
6 – 24
Chapter 6 Principles of Operation
GUIDE ASSY END
AC UA OR GUIDE END
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PAPER FEED ROLLER
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