Page: 204
Service Manual for OF5300/5600
Chapter A Board Descriptions
1. Block diagram
The 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. Function
1) Fan motor control
The fan motor is controlled by the FANON signal generated from IOGA3 under the temperature control of
the heater.
The operating status of the fan is supervised by the FANSNS-N signal.
The fan rotates in the following 3 status:
Normal mode
Cover open
Paper jamming occurring in the paper transport route
2) 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 decision
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