Canon 1130 Service Manual page 66

a. Turning On/Off the Main Motor
When the DC-CPU on the CPU PCB causes the main motor drive signal (MNMON) to go '1'
through the DC driver PCB, the control circuit on the main motor driver PCB generates drive
current to rotate the main motor at a specific speed.
When the drive signal goes '0', on the other hand, the output of the control signal stops,
removing the drive current and, thus, stopping the main motor.
b. Controlling the Rotation to a Constant Speed
When the main motor rotates, its speed is detected and communicated to the rotation speed
control circuit, which in response compares the speed against pulse signals and exerts control so
that the phase of one matches that of the other. At this time, a signal (MNMRDY), used to indicate
a state of constant speed, is sent to the CPU PCB.
E010
If an error causes the rotation speed of the motor to deviate, the main motor
ready signal (MNMRDY) goes '0', causing all copier operations to stop (main
motor error).
COPYRIGHT © 2002 CANON INC. CANON CLC1100/1130/1150/1160/1180 REV.1 FEB. 2002 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 2 BASIC OPERATION
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