R51
A3 - 15
40672201TH Rev. 4
A3.1.11 R51 Circuit Diagram (Page 11/12)
1.
Block diagram
The circuit diagram shown on page 11/12 consists of the following connector:
•
Connector CN6 that provides an interface between R51 board and power supply unit
(P2H).
•
Connector CN7 that provides an interface between R51 board and power supply unit
(MPW1446/MPW1546).
•
Connector CN8 that provides an interface between R51 board and power supply unit
(P6L).
2.
Function
1)
Sensor and switch control
Five types of sensors are used in the printer as listed below. All of their output
enter IOGA4 ports for referring to and processing by the IOGA4 (CPU).
Figure A3.1.13 shows sensors and switch control.
•
Inlet sensor 1
•
Write sensor (To detect the paper top position for printing)
•
Outlet sensor
•
Toner end sensor
•
Cover status switch
The functions of various sensors are described in the following table.
Sensor Type
PSIN-N
Inlet sensor
This photosensor is positioned before the resist roller to detect whether
the paper has entered into the printer section.
Sensor Name
Function
WRSNS-N
Write sensor
Detects the arrival of paper at designated position on the paper transport
route inside the printer in order to turn on the light of the LED head.
0: Paper exists, 1: Paper does not exist
PSOUT-N
Outlet sensor
Located at the exit of the printer to supervise the paper exit operation.
0: Paper exists, 1: Paper does not exist
TNRSNS-N
Toner sensor
Detects the remaining toner in the toner cartrige.
"The length of time of low-toner state within fixed time interval" detects a
low-toner state.
CVOPN-N
Cover open
sensor
Detects whether the cover of the printer section is open or not.
0: Cover is open, 1: Cover is close
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Страница 435: ...40672201TH Rev 4 Appendix F PC Loading Second Edition December 1998 Oki Data Corporation...
Страница 436: ...40672201TH Rev 4 FX 051 SYSTEM SPECIFICATION PC LOADING PART Ver 00 11 Oki Data Confidential...
Страница 448: ...40672201TH Rev 4 Appendix G RMCS SYSTEM MANUAL For Model 30 Second Edition December 1998 Oki Data Corporation...
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