Chapter 55-75.3 Various Control Mechanisms5.3.1 Controlling the Scanner Drive System5.3.1.1 Overview 0013-8578Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR C3080i / iRC2550The following components are associated with the scanner drive system:F-5-10[1] Reader Motor (M501) Drive Signalused to turn on/off the motor and change its direction/speed of rotation.[2] Contact Image Sensor (CIS) Home Position sennsaor (PS501) Detection Signalused to indicate that the contact image sensor (CIS) is in home position,[3] Copyboard Cover Sensor (front, PS502; rear, PS503) Detection Sugnalused to indicate the state (open/closed) of the copyboard cover.5.3.1.2 Reader Motor Control 0013-8579Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR C3080i / iRC2550The reader motor driver turns on/off the reader motor and controls its direction/speed of rotation.F-5-11MEMO:The machine uses any of the following scan speeds according to selected mode:[1][2][3](reverse)(reverse)CarriageCIS HP sensorReader motorContact imagesensor (CISReader control PCBCopyboard coveropen/closed sensor(PS503)copyboard coveropen/closed sensor(PS502)Guide shaftCarriage drive beltSensorlight-blockingplateReader control PCB3.3V +24VOPT_MCKCCWMD_POWM_ENABLERETURNM_VREF+5VJ505 B*BAA*CPU Motordriver1234M501
