Chapter 55-6F-5-95.3 Various Control5.3.1 Controlling the Scanner Drive System5.3.1.1 Outline 0006-5722iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /The machine's scanner system consists of the following components:F-5-10[1] Reader Motor (M501) Drive Signalturns on/off the motor, and controls its direction/speed of rotation.[2] Contact Image Sensor (CIS) HP Sensor (PS503) Detection Signalchecks if the contact image sensor (CIS) is at home position.[3] Copyboard Cover Sensor (front, PS502; rear, PS501) Detection Signaldetects the state (open/close) of the copyboard cover.5.3.1.2 Controlling the Reader Motor 0006-5723iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /The reader motor driver turns on/off the reader motor and controls the direction/speed of its rotation according to the signals from the CPU.ShadingpositionStream readingstart position2.Original scan1.CIS position check*1*1*1:Only if 1 min or more has passed since previous rotationCIS HPsensorHPOriginal glassread start position[1][2][3]forwardreverseSensorlight-blockingplateCartridgeCIS HP sensor (PS503)Reader motorContact imagesensor CISReader controller PCBCopyboard coveropen/closed sensor(PS501)Copyboard coveropen/closed sensor(PS502)Guide shaftCarriage drive belt