Laurell Technologies
Quick Start WS-650 Series 10/2011 – 10070193.revL
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distributed without express written permission from a corporate officer.
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USING THE “BULL’S EYE” LEVEL
It is always a good practice
to level the system / wafer
chuck before using. A level
wafer chuck will help to
reduce thickness non-
uniformities.
Use the level either on the
chuck itself or on a flat
substrate (do not pull
vacuum onto to the substrate
when leveling).
Level the system by leveling
the bench or table. If this is
impractical use shims under
the feet of the processor.