3. After the printer enters the SCANNER READY state, the DC controller instructs the
paper feeder driver to pick a sheet of paper. The paper feeder PCB activates the paper
feeder pickup clutch (CL501). Then the pickup roller, feed roller, and separation roller
make one rotation. The lifter motor (M501) rotates clockwise, causing the pickup arm to
move down.
4. As the pickup arm moves down, the pickup roller touches the surface of the stack of
paper. Paper is picked from the stack and fed into the printer.
5. When paper reaches the feed sensor, the pickup motor rotates counter-clockwise,
causing the pickup arm to lift.
6. The separation roller eliminates any multiple-fed sheets, and a single piece of paper
enters the feed path.
Figure 5-43.
500-sheet paper feeder pickup and feed operation
182 Chapter 5 Theory of operation ENWW
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