Chapter 66-36.2 Basic Sequence6.2.1 Basic Sequence 0006-5972iR2270 / iR2870 / iR3570 / iR4570 / iR2230 / / / iR3530 /When the control panel power switch is turned on, the laser scanner starts to rotate; when the motor rotation reaches its target revolution, the machine turns on thelaser unit. Thereafter, when the Start key is turned on, the machine generates the image request signal (PVREQ) on the printer side, and turns on the laser beamwith reference to the generated signal.A4, 1 CopyF-6-46.3 Various Controls6.3.1 Controlling the Laser Activation Timing6.3.1.1 Turning On and off the Laser Light 0006-5973iR2270 / iR2870 / iR3570 / iR4570 / iR2230 / / / iR3530 /The laser light is turned on and off according to the combination of laser control signals (CNT0/1/2) from the DC controller PCB.T-6-7CNT2 Laser driver control signalVDO2 Image data signal inputPWCHG Light intensify switchover signalFG PULSE DETECT FG PULSE detecting signalPOLYGON FG FG output signalP ACC Motor acceleration signalP DEC Motor deceleration signalBD BD output level singleLaser control signal Laser statusCNT2 CNT1 CNT0 Laser A Laser B0 1 0 ON (for APC control) OFF0 1 1 OFF OFF0 0 1 OFF ON (for APC control)0 1 1 OFF OFF1 1 1 Video signal input enabled Video signal input enabled0 1 1 OFF OFF0 0 1 OFF ON (for APC control)0 1 1 OFF OFFSingle DescriptionPRINT STBYSTBY INTRPVREQBDBD detection/APC control ONAPC control ONLaser ABD detention/APC control ON
