Various Controls; Controlling The Laser Activation Timing; Laser On/Off Control - Canon iR3245 Series Service Manual

Chapter 6

6.3 Various Controls

6.3.1 Controlling the Laser Activation Timing

6.3.1.1 Laser ON/OFF Control

iR3225 / iR3225N / iR3235 / iR3235N / iR3245 / iR3245N
Laser ON/OFF control is dependent on the combination of the laser control signal (A/B laser: CNT1-0/1-1/1-2, C/D laser: CNT0-0/0-1/0-2) from the image PCB.
<A laser/B laser>
<C laser/D laser>
Image PCB
6-4
Laser control signal
CNT1-2 CNT1-1 CNT1-0 A Laser
0 1 0
0 1 1
0 0 1
0 1 1
1 1 1
0 1 1
0 0 1
0 1 1
Laser control signal
CNT0-2 CNT0-1 CNT0-0 C Laser
0 0 1
0 1 1
0 1 0
0 1 1
1 1 1
0 1 1
0 0 1
0 1 0
J461
T-6-7
Laser status
B Laser
ON (For APC control) OFF
OFF OFF
OFF ON (For APC control)
OFF OFF
Video signal entry arrowed Video signal entry arrowed
OFF OFF
OFF ON (For APC control)
OFF OFF
T-6-8
Laser status
D Laser
ON (For APC control) OFF
OFF OFF
OFF ON (For APC control)
OFF OFF
Video signal entry arrowed Video signal entry arrowed
OFF OFF
OFF ON (For APC control)
OFF OFF
F-6-4
0019-4284