Board Descriptions A - 66 OF 5300/5600 Serv Man, P/N 59278301A3.13 TQSB (Second tray) Circuit Diagram: option1. Block diagramThis board is installed as the optional board for the unit.Figure A3.13.1 shows a block diagram of the second tray (option).2. FunctionSecond tray consists of the following functions:• Paper capacity: 500 sheets• Paper size: A4, Letter, Legal• Paper-size selection: Automatic• Cassette/no-cassette selection: Automatic• Paper/no-paper selection: Automatic• Paper route open to facsimile transceiver unit : Automatic decisionControl method:When second tray is installed with the facsimile transceiver unit, the tray is connected tothe facsimile transceiver unit by a connecting cable. The tray is controlled by the com-mand from CPU of PU (printer unit) section.X'talMOS CPUOpen collectorFilterOpen collectorCN14 CN1OPSDP-NOPSCLK-NOPSD-N 324324M17 2nd tray (option)M1234TransistorMotorMotor drivePull-up resistorInlet sensorPaper end sensorSIZE75860 VPSGND+30 V+5 V0 VP+30 V+5 VSGNDIOGAIC2MOTORBlock Diagram of 2nd Tray (Figure A3.13.1)