HCI lift-up operation The HCI lifts up the tray to keep the surface of the paper at the pickup position whenever the following occurs: ● The product is turned on ● The cassette is installed ● The paper stack surface lowers by pickup operation Figure 1-56 HCI lift-up operation Wire HCI left cassette media stack surface 1 sensor PS3202 PS3201 HCI left cassette media stack surface 2 sensor Tray Pulley M3303 HCI left cassette lifter motor The figure above illustrates the mechanism for the left cassette, but each HCI cassette has the same mechanism. The operational sequence of the lift-up is as follows: 1. The HCI cassette lifter motor rotates the pulley to reel the wire.
Accordingly the tray moves up. 2. The HCI cassette lifter motor stops when the HCI cassette media stack surface 2 sensor detects the paper surface. 3. The HCI cassette lifter motor rotates again when the HCI cassette media stack surface 1 sensor detects that the stack surface lowers during a print operation. The HCI controller determines an HCI cassette lifter motor failure and notifies the formatter through the DC controller when the HCI cassette media stack surface 2 sensor does not detect the paper surface within a specified period from when the HCI cassette lifter motor starts rotating.
HCI cassette media-presence detection The HCI controller detects whether the paper is loaded in the cassette by monitoring the HCI cassette media out sensor. The cassette media-presence detection is not performed during Sleep mode. 72 Chapter 1 Theory of operation ENWW