Laser ON/OFF Control

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Controlling the Laser Activation Timing
Laser ON/OFF Control
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.
NOTE:
Because iR4025 is a 2 beam, the CD laser becomes the same control as an A B laser.
<A laser/B laser>

Laser control signal | Laser status
CNT1-2 | CNT1-1 | CNT1-0 | A Laser | B Laser
0 | 1 | 0 | ON (For APC control) | OFF
0 | 1 | 1 | OFF | OFF
0 | 0 | 1 | OFF | ON (For APC control)
0 | 1 | 1 | OFF | OFF
1 | 1 | 1 | Video signal entry arrowed | Video signal entry arrowed
0 | 1 | 1 | OFF | OFF
0 | 0 | 1 | OFF | ON (For APC control)
0 | 1 | 1 | OFF | OFF

<C laser/D laser>

Laser control signal | Laser status
CNT1-2 | CNT1-1 | CNT1-0 | C Laser | D Laser
0 | 0 | 1 | ON (For APC control) | OFF
0 | 1 | 1 | OFF | OFF
0 | 1 | 0 | OFF | ON (For APC control)
0 | 1 | 1 | OFF | OFF
1 | 1 | 1 | Video signal entry arrowed | Video signal entry arrowed
0 | 1 | 1 | OFF | OFF
0 | 0 | 1 | OFF | ON (For APC control)
0 | 1 | 0 | OFF | OFF