Controlling The Drum Motor (M2) - Canon CLC 1120 Service Manual

CHAPTER 2 BASIC OPERATION
B. Controlling the Drum Motor (M2)
1. Outline
Table 2-302 shows the functions of the drum motor control circuit, and Figure 2-302 is a block
diagram of the circuit.
Item
Power supply
Drive signal
Operating/drive assembly
Control
DC driver PCB
DRMFG
DRMRDY
DRMON
DRMSP1
DRMSP0
DRMCLK
2-12
COPYRIGHT © 1999 CANON INC.
24 VDC from the DC power supply PCB
Drive signal (DRMON) from the DC driver PCB
Photosensitive drum, transfer drum
Turns on/off the drum motor
Controls the speed of the drum motor
Checks for errors
Table 2-302
Drum motor (M2)
Rotation speed
control circuit
Reference
pulse
generation
Figure 2-302
CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Description
Motor
driver
Rotation speed
detection
M2