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Board Descriptions
A - 33
OKIOFFICE 44 Serv. Man., P/N 59276801
A3.1.9
R44 Circuit Diagram
1.
Block diagram
The circuit diagram consists of the following functions and connectors:
•
IC9 (Drum motor driver)
•
TR4/TR2 (Clutch driver)
•
Connector CN15 that provides an interface between R44 board and the resist motor.
•
Connector CN2 that provides an interface between R44 board and the clutch.
Figure A3.1.11 shows the related signals of the drum motor and clutch.
2.
Function
1)
Drum motor control
This drum motor is driven by the motor driver IC9. It is two-phase excited and bipolar-
driven according to the DMPH1, DMPH2 and DMON1-N signals that are generated from
the CPU. This drum motor rotates the image drum.
2)
Clutch
When starting to print, performs the paper supply of recording paper by using this clutch.
Clutch is driven by CLUTCH signal generated from CPU.
M
CN15
CN2
1
2
3
4
2
1
DM-T1
DM-T2
DM-T3
DM-T4
PJON
OV
(2 phase excitation)
Clutch
drive
Drum motor
R44
Drum motor
drive
IC9
TR4/TR2
CPU
DMPH1
DMPH2
DMON1-N
Clutch
Clutch
Figure A3.1.11 Related Signals of Drum Motor and Clutch
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...