Samsung SCX-4729FW - Turning on the machine

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2.Productspecicationanddescription

2.2.4.5.LSU(LaserScannerUnit)

ItisthecorepartoftheLBPwhichswitchesfromthevideodatareceivedtothecontrollertotheelectrostaticlatentimage

ontheOPCdrumbycontrollinglaserbeam,exposingOPCdrum,andturningprincipleofpolygonmirror.TheOPCdrumis

turnedwiththepaperfeedingspeed.TheHSYNCsignaliscreatedwhenthelaserbeamfromLSUreachestheendofthe

polygonmirror,andthesignalissenttothecontroller.ThecontrollerdetectstheHSYNCsignaltoadjusttheverticallineof

theimageonpaper.Inotherwords,aftertheHSYNCsignalisdetected,theimagedataissenttotheLSUtoadjusttheleft

marginonpaper.Theonesideofthepolygonmirrorisonelineforscanning.

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