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The operational sequence of the lift-up is as follows:
1.
The lifter motor rotates to raise the lifter.
2.
The lifter motor stops when the PF cassette media stack surface sensor detects the paper surface.
3.
The lifter motor rotates again when the PF cassette media stack surface sensor detects that the
stack surface lowers during a print operation.
When the PF cassette media stack surface sensor does not detect the paper surface within a specified
period from when the PF cassette lifter motor starts rotating, t he paper feeder controller determines a
PF cassette lifter motor failure, and it notifies the formatter through the DC controller.
500-sheet paper feeder cassette media-presence detection
The paper feeder controller detects whether the paper is loaded in the cassette by monitoring the PF
cassette media out sensor.
The cassette media-presence detection is not performed during Sleep mode.
When the PF cassette media out sensor does not detect paper, the paper feeder controller determines a
media-absence, and it notifies the formatter through the DC controller.
500-sheet paper feeder cassette multiple-feed prevention
The paper feeder uses a PF cassette separation roller to prevent the multiple sheets of paper from
entering to the product.
The PF cassette separation roller transmits its driving force so that the roller rotates in the same direction
with the PF cassette feed roller.
When one sheet of paper is picked up, driving force from the PF cassette feed roller transmits
●
through the single sheet of paper because the torque limiter functions and the PF cassette
separation roller follows the PF cassette feed roller. Therefore, a single sheet is fed into the
product.
When multiple sheets of paper are picked up, driving force from the PF cassette feed roller
●
becomes weak due to low friction between the sheets. The PF cassette separation roller rotates by
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Chapter 1 Theory of operation
ENWW
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Table of Contents
Troubleshooting
