Oki B 4100 Maintenance Manual page 415

A3.2.11 M17 Circuit Diagram (Page 12/17)
1. Block diagram
The circuit diagram shown on page 12/17 consists of the following functions and connectors:
• IC9 (Drum motor driver)
• IC22 (Resist motor driver)
• Connector CN3 that provides an interface between M17 board and the resist motor.
• Connector CN4 that provides an interface between M17 board and the drum motor.
Figure A3.2.14 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.
DMPH1
DMPH2
DMENA-N
DMON2-N
CPU
RMPH1
RMPH2
RMON1-N
RMON2-N
40055101TH Rev.4
IC9
Drum motor
drive
(2 phase excitation)
IC22
Resist motor
drive
(2 phase excitation)
Figure A3.2.14 Related Signals of Drum/Resist Motor
M17
CN4
DM-T1 1
DM-T2 2
DM-T3 3
DM-T4 4
CN3
1
RM-T1
RM-T2 2
RM-T3 3
RM-T4 4
Drum motor
M
Resist motor
M
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