Oki OKIFAX 5400 Maintenance Manual page 294

A3.1.10 E17 Circuit Diagram
1. Block diagram
The circuit diagram shown on page 11/16 consists of the following functions and connectors:
• IC9 (Drum motor driver)
• IC22 (Resist motor driver)
• Connector CN3 that provides an interface between E17 board and the resist motor.
• Connector CN4 that provides an interface between E17 board and the drum motor.
Figure A3.1.12 shows the related signals of the drum motor and resist motor.
2. Function
1) Drum motor control
The drum motor is driven by the motor driver IC9. It is two-phase excited and bipolar-
driven according to the DMPH1 and DMPH2 signals that are generated from the CPU.
The DMON2-N, DMENA-N signal are generated from CPU. This drum motor rotates
the image drum.
2) Resist motor control
The resist motor is driven by the motor driver IC22. It is two-phase excited and bipolar-
driven according to the RMPH1 and RMPH2 signals that are generated from the CPU.
The RMON1-N, RMON2-N signal ARE generated from CPU. This resist motor rotates
the hopping (paper hopping) roller and the resist (paper feed) roller.
Refer to Appendix B of the page B-3.
CPU
DMPH1
DMPH2
DMENA-N
DMON2-N
RMPH1
RMPH2
RMON1-N
RMON2-N
Figure A3.1.12 Related Signals of Drum/Resist Motor
40838301TH Rev.1
E17
IC9
DM-T1
DM-T2
Drum motor
DM-T3
drive
DM-T4
(2 phase excitation)
IC22
RM-T1
RM-T2
Resist motor
RM-T3
drive
RM-T4
(2 phase excitation)
A3 - 13
CN4
Drum motor
1
2
M
3
4
CN3
1
Resist motor
2
M
3
4
E17