Chapter 66-56.3.3 Controlling the Laser Scanner Motor6.3.3.1 Outline 0010-8032iR7105 / iR7095 / iR7086The machine controls the laser scanner motor so that the motor rotates at a specific speed using its motor speed control mechanism and reference signal generationmechanism found inside the Video controller PCB.The motor speed control mechanism detects the speed detection signal (FG, BD), and compares it against the reference signal generated by the reference signalgeneration mechanism, thereby controlling the acceleration signal (ACC) and the deceleration signal (DEC) to make sure that the motor rotates at a specific speed.The machine checks different references for speed detection to suit the state of the printer unit, ultimately reducing the length of time used to control the scannermotor speed. The FG signal is a detection signal used to roughly adjust the scanner motor speed. The BD signal, on the other hand, is a detection signal used tofinely adjust the motor speed.F-6-6ERROR CODE:E110 (scanner motor error)The FG signal is not detected a specific period of time after the scanner motor starts up.The FG signal is not detected while the scanner motor is rotating at a constant speed.6.3.4 Controlling the Laser Shutter6.3.4.1 Controlling the Laser Shutter 0011-2631iR7105 / iR7095 / iR7086The machine is equipped with a mechanism to protect against exposure of its inside by laser light when the primary changing assembly front cover is opened. Whenthe primary changing assembly front cover is opened, the protrusion attached to the cover releases the laser shutter, causing the laser shutter to close so that thelaser path is closed.ASICMotorspeedcontrolsegmentReferencesignalgenerationsegmentJ1406Video PCBACCBDDECFGLaser driver PCB 1J1317J1319
