Oki OF5600, Service Manual

Page: 318 / 448

Board Descriptions A - 34 OF 5300/5600 Serv Man, P/N 59278301
A3.2.12 M17 Circuit Diagram
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
Control 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 the
command from CPU of PU (printer unit) section.
Related Signals of Fan Motor (Figure A3.2.15)
M17
IOGA3
FANSNS
CN11
1
2
3
FANON
0 V
FAN motor
TR508
TR20
+24 V
IC2