Printing from the optional 500-sheet and 250-sheet Trays

There are two kinds of paper feeders: 250-sheet and 500-sheet. The paper feeder operation sequence is controlled by the feeder control PCA. The feeder control PCA has an 8-bit microcomputer, and controls the serial communications between the feeder(s) and the

dc controller PCA of the printer. The feeder control PCA drives motors and solenoids with various commands from the dc controller PCA. The feeder control PCA sends the status of the paper feeder back to the printer at the same time.

Figure 28. 250-sheet paper feeder

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Chapter 5 Functional information 95