Chapter 66-5The BD sensor of the BD PCB receives light from laser A only, and is free of light from laser B, i.e., the BD signal is generated based on the light from laser A.6.3.2 Controlling the Intensity of Laser Light6.3.2.1 APC Control 0006-5976iR2270 / iR2870 / iR3570 / iR4570 / iR2230 / / / iR3530 /The laser light hitting the photodiode included in the laserdiode is monitored and is controlled so that it remains a specific level at all times.6.3.3 Controlling the Laser Scanner Motor6.3.3.1 Controlling the Laser Scanner Motor 0006-5978iR2270 / iR2870 / iR3570 / iR4570 / iR2230 / / / iR3530 /The laser scanner motor is controlled with reference to the laser scanner motor revolution signal (FG signal).The revolution of the laser scanner motor is controlled by means of the acceleration signal (ACC signal) and the deceleration signal (DEC signal).F-6-76.3.4 Controlling the Laser Shutter6.3.4.1 Controlling the Laser Shutter 0006-5979iR2270 / iR2870 / iR3570 / iR4570 / iR2230 / / / iR3530 /When the right door is opened, the laser shutter link operating in conjunction with the cover causes the laser shutter to move down, thus blocking the path of thelaser light. If the machine identifies the front cover or the right door as having been opened, it will turn off the laser scanner motor and the laser output.J316J317ACCDECFGBDDC-CON
