Iv . Controlling The Laser Scanner Motor; Outline - Canon ImageRunner 600 Service Manual

CHAPTER 5 LASER EXPOSURE SYSTEM

IV . CONTROLLING THE LASER SCANNER MOTOR

A.

Outline

The laser scanner motor is controlled for the following:
[1] Constant speed rotation control
[2] Full-speed/wait rotation switching
When '0', full-speed rotation; when '1', wait state rotation.
J503
SP-SEL
7
*
LM-RDY
8
LM-ON
9
0V
10
When '0', the laser scanner motor turns on.
Related error code
E110
(laser scanner rotation speed
error)
5-12
COPYRIGHT © 1999 CANON INC.
J762
When the motor speed reaches a specific level, '0'
Figure 5-401 Functional Block Diagram
[1] LM-RDY* goes '1' when the motor is rotating (i.e., when LM-ON
is '0').
[2] LM-RDY* does not go '0' within a specific period of time.
Relay PCB
J1715
38V 0V
J761
1 2 3
Laser scanner
4
motor driver
3
2
1
CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
J763
1
M4
Drive
11
signal
Laser scanner
motor