Chapter 1010-810.4.1.2 Power Supply Route in the Reader Unit 0019-0027iR3225 / iR3225N / iR3235 / iR3235N / iR3245 / iR3245NIn the reader controller PCB, 24V DC power which is supplied from the printer unit is used to drive motors and to turn on the LED of the CCD unit (generated bythe LED driver PCB). 12V DC power is also supplied from the printer unit, and the following DC voltages are generated.-5V DC: Document size detection sensor-3.3V DC: IC drive/copyboard cover open/close sensor, CCD unit HP sensorFurthermore, 1.8V DC power is generated from 3.3V DC power, and is used for ASIC drive.F-10-610.4.1.3 Timing of Supply to the Reader Unit 0019-0028iR3225 / iR3225N / iR3235 / iR3235N / iR3245 / iR3245NThe reader unit is supplied with 24 VDC/1.3 VDC by the printer unit at such times as described below.F-10-7J9J8J4J5J6J3J7J2J10J11J801Reader controller PCBDFDF DC24VDC24VDC24VLED driver PCBAC100VDC24V/12V/3.3VDC3.3VDC24V/DC13VFrom printer unitAC100VFrom printer unitGenerates 5V DC from 12V DCGenerates 3.3V DC from 12V DCPSTBY SCANDC 13V/24VMain power switch ONPower plug contentto outletStandbyScanSleep mode
