FEI Scios 2 - Easylift: Needle Exchange; Calibration

System Options: EasyLift
C O N F I D E N T I A L – FEI Limited Rights Data 7-17
EasyLift: Needle Exchange / Calibration
With the use of this procedure it is possible to exchange the
needle, to reach the eucentric point with it and to compensate for
hardware needle rotational errors.
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1. In the Step 2: Prepare 1 / Vent Chamber click on the Vent
Chamber button to vent the chamber.
2. Prepare the needle alignment tool – Base holder.
3. Pull the probe shaft out of (direction from the chamber) the
EasyLift mechanics with the use of the jig (protecting the
needle to touch any mechanical part).
4. Place the probe shaft on the Base holder. Place a little bit of
Braycote or Fomblin on shaft o-rings.
5. Push the shaft into v-blocks according to the picture.
6. Place the needle in the Probe under the leaf spring shaft using
tweezers.
7. Check by rotating the Probe shaft if the needle is positioned
straight (the needle tip movement during its rotation should
be within 500
µm).
8. Align the needle to the contrast edge.