Board Descriptions A - 34 OF 5300/5600 Serv Man, P/N 59278301A3.2.12 M17 Circuit Diagram1. Block diagramThe circuit diagram consists of the following connectors:• Connector CN11 that provides an interface between M17 board and the fan motor.• Connector CN14 that provides an interface between M17 board and the second tray(option).• Connector CN16 that provides an interface between M17 board and Sub-power unit.Figure A3.2.15 shows the related signals of the fan motor.Figure A3.2.16 shows an interface between M17 board and the second tray (option).2. Function1) Fan motor controlThe fan motor is controlled by the FANON signal generated from IOGA3 under thetemperature control of the heater. The operating status of the fan is supervised bythe FANSNS-N signal.The fan rotates in the following 3 status:• Normal mode• Cover open• Paper jamming occurring in the paper transport route2) Second tray (option)Second tray consists of the following functions:• Paper capacity : 500 sheets• Paper size : A4, Letter, Legal• Paper-size selection : Manual• 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 on the facsimile transceiver unit, the tray is con-nected to the facsimile transceiver unit by a connector. The tray controls by thecommand from CPU of PU (printer unit) section.Related Signals of Fan Motor (Figure A3.2.15)M17IOGA3FANSNSCN11123FANON0 VFAN motorTR508 TR20+24 VIC2
