Page: 208Service Manual for OF5300/5600Chapter A Board DescriptionsSensor Type Sensor Name FunctionPSIN-NPSIN2-NInlet sensorInlet sensor 2This photosensor is positioned before the resist roller to detectwhether the paper has entered into the printer section.WRSNS-N Write sensor Detects the arrival of paper at designated position on the papertransport route inside the printer in order to turn on the light of theLED head.0: Paper exists, 1: paper does not existPSOUT-N Outlet sensor Located at the exit of the printer to supervise the paper exitoperation0: Paper exists, 1: paper does not existPAPER-N Paper sensor Detects the presence of paper in the paper cassette.0: Paper exists, 1: paper does not existTNRSNS-N Toner sensor Detects the remaining toner in the toner cartridge."The length of time of low-toner state within fixed time interval"detects a low-toner state.CVOPN-N Cover opensensorDetects whether the cover of the printer section is open or not.0: Paper exists, 1: paper does not existCopyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA BusinessPartner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)