Comment amtetcher SNF 2009-11-01 14:19:31: vacuum wand doesn't work properly.

popomoo at popomoo at
Sun Nov 1 14:19:31 PST 2009

Once a vaccuum wand is turned on, we need to push the black button to stop sucking. But, now the initail mode is that the black button is already pushed. In order to grap the wafer, you need to pull out the black button. 

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