Printing from the 500-sheet feeder
The MFP supports up to three additional 500-sheet feeders (trays 3, 4, and 5).
Figure 5-27 Paper path with 500-sheet feeders installed
The paper-feeder driver controls the 500-sheet feeder operation sequences. An 8-bit microprocessor
in the paper-feeder driver controls the 500-sheet feeder sequences and the communication with the
dc controller PCA.
The paper-feeder driver drives the solenoid in response to the pickup command. The paper-feeder
driver also reports the paper-feeder status to the dc controller PCA.
The printer delivers a charge of +24 Vdc to the paper feeder, which then generates +3.3 V for the
integrated circuits.
122 5 Theory of operation
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