Board Descriptions
A - 38
OKIOFFICE 44 Serv. Man., P/N 59276801
A3.1.12 R44 Circuit Diagram
1.
Block diagram
The circuit diagram consists of the following connector:
•
Connector CN6 that provides an interface between R44 board and power supply unit.
2.
Function
1)
Sensor and switch control
Five types of sensors are used in the printer as listed below. All of their output enter IOGA
ports for referring to and processing by the CPU.
Figure A3.1.15 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
PSIN1-N
Inlet sensor 1
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
Summary of Contents for OKIOFFICE 44
Page 2: ...All specifications are subject to change without notice Service Manual OKIOFFICE 44 59276801...
Page 135: ...Disassembly 4 6 OKIOFFICE 44 Service Manual P N 59276801 Whole Unit Picture FX048 CP4 1 Fig 01...
Page 329: ...Illustrated Parts List D 6 OKIOFFICE 44 Service Manual P N 59276801 Section 2 Printer Unit...
Page 331: ...Illustrated Parts List D 8 OKIOFFICE 44 Service Manual P N 59276801 Section 3 Operator Panel...
Page 351: ...Illustrated Parts List D 28 OKIOFFICE 44 Service Manual P N 59276801 Section 12 Cables...
Page 357: ...Board Layout E 2 OKIOFFICE 44 Service Manual P N 59276801 MEM eps E 2 MEM PCB...
Page 358: ...Board Layout E 3 OKIOFFICE 44 Service Manual P N 59276801 TEL U eps E 3 TEL U PCB...
Page 359: ...Board Layout E 4 OKIOFFICE 44 Service Manual P N 59276801 Hook eps E 4 Hook PCB...
Page 388: ...OKIOFFICE 44 Service Manual Part Number 59276801 Printed in the USA...