Oki B4100 - Manual (Page 395)

40055101TH Rev.4 395 /
1. Block diagram
The circuit diagram shown on page 9/12 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.
A3.1.10 R44 Circuit Diagram (Page 10/12)
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