The cassette media-size detection and the cassette-presence detection are not performed during Sleep mode. The following table lists the combination of the switches. Table 1-7 Media switch combinations Paper size Cassette media width switch Cassette media end switch Top Center Bottom Top Center Bottom Cassette absence OFF OFF OFF — OFF OFF A5-R OFF OFF OFF — ON ON B5-R ON ON OFF — ON ON Executive-R OFF ON OFF — ON ON Letter-R OFF ON ON — ON ON A4-R ON ON ON — ON ON 8.5 x 13 in OFF OFF OFF — ON OFF Legal OFF OFF OFF — OFF ON B4 ON ON OFF — OFF ON Ledger OFF ON ON — OFF ON A3 ON ON ON — OFF ON Cassette lift operation There are two types of cassette lift operation:
cassette lift-up and cassette lift-down. The paper stack surface is lifted up to the pickup position. The lifting plate is lifted down when the pickup operation is not performed. The lift-up and lift-down operations are described in the following. Both upper and lower cassettes perform the same operation. Lift-up operation The DC controller rotates the cassette lifter motor until the cassette lift-up sensor detects the lifter rack. Accordingly the lifter moves up and the lifting plate moves up to the pickup position. The lift-up operation is performed when the product is turned on or when the cassette is installed.
The DC controller determines a cassette lifter motor failure and notifies the formatter when the cassette lift-up sensor does not detect the lifter rack within a specified period from when the lift-up operation starts. Lift-down operation The paper loaded in the cassette presses against the cassette pickup roller when the lifting plate is in the pickup position. If this condition is kept for a long time, the paper deformed and a pickup failure may occur. Therefore, the lifting plate is moved down to release the paper from the pickup roller when a print operation is not performed. 36 Chapter 1 Theory of operation ENWW