Contents
2.2.5.6.ITBEEPROMPBA.......................................................................................2−26
2.2.5.7.NFCTagSticker...........................................................................................2−27
2.2.5.8.ElectricalPartsLocation.................................................................................2−28
2.2.6.EngineF/WControlAlgorithm......................................................................................2−30
2.2.6.1.Feeding.......................................................................................................2−30
2.2.6.2.Transfer.......................................................................................................2−30
2.2.6.3.Fusing.........................................................................................................2−31
2.2.6.4.LSU............................................................................................................2−31
2.2.7.SoftwareDescriptions..................................................................................................2−32
2.2.7.1.Softwaresystemoverview..............................................................................2−32
2.2.7.2.Architecture.................................................................................................2−32
2.2.7.3.DataandControlFlow...................................................................................2−33
3.DisassemblyandReassembly..............................................................................................................3−1
3.1.Precautionswhenreplacingparts................................................................................................3−1
3.1.1.Precautionswhenassemblinganddisassembling...............................................................3−1
3.1.2.PrecautionswhenhandlingPBA.....................................................................................3−1
3.1.3.ReleasingPlasticLatches..............................................................................................3−2
3.2.Screwsusedintheprinter..........................................................................................................3−3
3.3.Replacingthemaintenanceparts.................................................................................................3−4
3.3.1.TonerCartridge...........................................................................................................3−4
3.3.2.WasteTonerContainer.................................................................................................3−5
3.3.3.ITBUnit....................................................................................................................3−6
3.3.4.FuserUnit..................................................................................................................3−8
3.3.5.TransferRollerAssy....................................................................................................3−9
3.3.6.Pickup_Forward_Reverseroller.....................................................................................3−9
3.4.ReplacingthemainSVCparts....................................................................................................3−10
3.4.1.Cover........................................................................................................................3−10
3.4.2.HVPSboard...............................................................................................................3−12
3.4.3.OuterTemperatureSensor.............................................................................................3−12
3.4.4.Wastetonercontainersensor..........................................................................................3−13
3.4.5.LSU..........................................................................................................................3−13
3.4.6.MainBoard................................................................................................................3−14
3.4.7.SMPSboard...............................................................................................................3−14
3.4.8.FeedDriveUnit..........................................................................................................3−15
3.4.9.FRAME-RETARD......................................................................................................3−16
3.4.10.MainDriveUnit..........................................................................................................3−17
4.AlignmentandTroubleshooting...........................................................................................................4−1
4.1.AlignmentandAdjustments.......................................................................................................4−1
4.1.1.Controlpanel..............................................................................................................4−1
4.1.2.UnderstandingthestatusLED........................................................................................4−3
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