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CHAPTER 5 LASER EXPOSURE SYSTEM
5-12
COPYRIGHT
©
1999 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
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
Figure 5-401 Functional Block Diagram
SP-SEL
J503 J762
J761
J763
Drive
signal
38V 0V
J1715
LM-RDY
*
LM-ON
0V
10
9
8
7
1
2
3
4
11
1
3
2
1
Laser scanner
motor driver
Laser scanner
motor
Relay PCB
DC controller PCB
M4
When '0', the laser scanner motor turns on.
When the motor speed reaches a specific level, '0'
When '0', full-speed rotation; when '1', wait state rotation.
Related error code
[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.
E110
(laser scanner rotation speed
error)