1x1500-sheet paper deck The 1x1500-sheet paper feeder (PD) is optionally installed at the bottom of the product. It features paper pickup and paper feeding to the product. The prroduct supports one paper deck and up to three paper feeders between the product and the paper deck. Figure 1-32 1x500-sheet paper feeder Face-down delivery Face-up delivery The paper deck driver controls the operational sequence of the paper deck and the serial communication with the DC controller of the product. The DC controller sends several commands to the paper deck driver at necessary timing. The paper deck driver drives each load, such as motor and solenoid, according to the commands.
The paper deck driver responds the status information of the paper deck to the DC controller. The DC controller determines a paper deck illegal connection and notifies the formatter if it does not make the serial communication with the paper deck driver during the pre-rotation period when the product is turned on, when recovering from the sleep mode or when the door is closed. The product supplies DC24V to the paper deck. The DC3.3V for sensors and ICs is generated from the DC24V in the paper deck driver. 44 Chapter 1 Theory of operation ENWW