Cassette-presence detection
The cassette presence sensor is in the lifter drive unit. The sensor detects the cassette-presence sensor
flag and determines whether the cassette is installed correctly.
Figure 5-32 Cassette presence sensor
Cassette lift operation
The DC controller rotates the lifter motor (M7) and moves the lifter rack until the cassette media-stack
surface sensor (SR9) detects it. The lifter lifts, and the lifting plate moves up to the position where the
media can be picked up. The lift operation is performed by monitoring the cassette media-stack-surface
sensor when the printer is turned on, when the cassette is installed, or as needed during a print operation.
If the paper-stack surface sensor does not detect the paper within a specified time after the lifter motor
begins rotating, the DC controller notifies the formatter that the lifter motor has failed.
ENWW Pickup, feed, and delivery system 141
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