Samsung BD-E8900 - Handling the Optical Pick-Up

1.Precautions
1.4.Handlingtheopticalpick-up
Thelaserdiodeintheopticalpickupmaysufferelectrostaticbreakdownbecauseofpotentialstaticelectricityfrom
clothingandyourbody.
Thefollowingmethodisrecommended.
1)Placeaconductivesheetontheworkbench(Theblacksheetusedforwrappingrepairparts.)
2)Placethesetontheconductivesheetsothatthechassisisgroundedtothesheet.
3)Placeyourhandsontheconductivesheet(Thisgivesthemthesamegroundasthesheet.)
4)Removetheopticalpickupblock
5)Performworkontopoftheconductivesheet.Becarefultoletyourclothesoranyotherstaticsourcestouchtheunit.
NOTE
•Besuretoputonawriststrapgroundedtothesheet.
•Besuretolayaconductivesheet,thatisgroundedtothetable,madeofcopper.
Fig.1-3
6)ShorttheshortterminalonthePCB,whichisinsidethePick-UpASS’Y ,beforereplacingthePick-Up.(Theshort
terminalisshortedwhenthePick-UpAss’yisbeingliftedormoved.)
7)AfterreplacingthePick-up,opentheshortterminalonthePCB.
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