Samsung ML-451 Series - Page 4

Contents
3.3.Replacingthemaintenanceparts...................................................................................................3−5
3.3.1.FuserUnit....................................................................................................................3−5
3.3.2.Pickup/Forwardroller..................................................................................................3−6
3.3.3.Transferroller...............................................................................................................3−6
3.4.Replacingthemainsvcparts........................................................................................................3−7
3.4.1.Cover..........................................................................................................................3−7
3.4.2.MainBoard..................................................................................................................3−9
3.4.3.JointPBA....................................................................................................................3−9
3.4.4.SMPSandFDB(FuserDriveboard)................................................................................3−10
3.4.5.OPCandMainmotor...................................................................................................3−11
3.4.6.MainDriveunit...........................................................................................................3−11
3.4.7.DuplexandPickupclutch.............................................................................................3−12
3.4.8.HVPSBoard...............................................................................................................3−12
3.4.9.ExitUnit....................................................................................................................3−13
3.4.10.LSU(LaserScanningUnit)...........................................................................................3−14
3.4.11.EraserLampPBA........................................................................................................3−14
3.4.12.CoverOpenPBA.........................................................................................................3−15
3.4.13.DisassemblingPickupassy...........................................................................................3−15
3.4.13.1.LeftCover...................................................................................................3−15
3.4.13.2.CassetteGuideL...........................................................................................3−16
3.4.13.3.RightCover.................................................................................................3−16
3.4.13.4.Cover-SMPSandSMPS.................................................................................3−18
3.4.13.5.DriveAssy...................................................................................................3−18
3.4.13.6.PickupandDuplexClutch..............................................................................3−18
3.4.13.7.Screw.........................................................................................................3−19
3.4.13.8.BracketCrossBarandPickupHarness.............................................................3−19
3.4.13.9.Pickupassy.................................................................................................3−20
3.5.Finisher.................................................................................................................................3−21
3.5.1.Cover........................................................................................................................3−21
3.5.2.StaplerAss’y..............................................................................................................3−22
3.5.3.Safetysensor..............................................................................................................3−22
3.5.4.TamperAss’y.............................................................................................................3−23
3.5.5.Finishermainboard.....................................................................................................3−25
3.5.6.DiverterAssy.............................................................................................................3−25
3.5.7.StackerMotor.............................................................................................................3−26
3.6.Mailbox................................................................................................................................3−27
4.AlignmentandTroubleshooting.............................................................................................................4−1
4.1.AlignmentandAdjustment..........................................................................................................4−1
4.1.1.ControlPanel................................................................................................................4−1
4.1.2.UnderstandingthestatusLED..........................................................................................4−3
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