Contents
2.2.6.1.Feeding.......................................................................................................2−29
2.2.6.2.Transfer.......................................................................................................2−29
2.2.6.3.Fusing.........................................................................................................2−30
2.2.6.4.LSU............................................................................................................2−30
2.2.7.SoftwareDescriptions..................................................................................................2−31
2.2.7.1.Softwaresystemoverview..............................................................................2−31
2.2.7.2.Architecture.................................................................................................2−31
2.2.7.3.DataandControlFlow...................................................................................2−32
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.Replacingthemaintenanceparts.................................................................................................3−3
3.2.1.ITBUnit....................................................................................................................3−3
3.2.2.FuserUnit..................................................................................................................3−5
3.2.3.TransferRollerAssy....................................................................................................3−6
3.2.4.Pickup_Forward_Separationroller.................................................................................3−7
3.3.ReplacingthemainSVCparts....................................................................................................3−8
3.3.1.LeftandRightcover....................................................................................................3−8
3.3.2.Topcover...................................................................................................................3−9
3.3.3.HVPSboard...............................................................................................................3−10
3.3.4.OuterTemperatureSensor.............................................................................................3−10
3.3.5.MainBoard................................................................................................................3−11
3.3.6.SMPSFan..................................................................................................................3−11
3.3.7.SMPSboard...............................................................................................................3−12
3.3.8.LSU..........................................................................................................................3−12
3.3.9.FuserFan...................................................................................................................3−13
3.3.10.ExitUnit....................................................................................................................3−13
3.3.11.DRIVE-T1.................................................................................................................3−14
3.3.12.FuserDriveUnit.........................................................................................................3−15
3.3.13.PH(PaperHandling)DriveUnit.....................................................................................3−16
3.3.14.MainDriveUnit..........................................................................................................3−17
3.3.15.MPPick-UpUnit.........................................................................................................3−18
3.3.16.Solenoid....................................................................................................................3−19
3.3.17.FRAME-SEPARA TIONUNIT.......................................................................................3−20
4.AlignmentandTroubleshooting...........................................................................................................4−1
4.1.Controlpanel..........................................................................................................................4−1
4.2.UnderstandingthestatusLED....................................................................................................4−2
4.3.UpdatingFirmware..................................................................................................................4−3
Copyright©1995-2017SAMSUNG.Allrightsreserved.ii
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