Problem karlsuss SNF 2009-02-19 13:17:06: Unable to focus on mask

kenney at snf.stanford.edu kenney at snf.stanford.edu
Thu Feb 19 13:17:06 PST 2009


with mask metal side correctly positioned I could not focus on the mask by using the top knob or the fine control knobs
I tried a second mask, which has worked many times before
to check if the mask plate was thinner than normal with the
same result. The TOP/BOTTOM light was lit. Thanks




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