Strasbaugh nTellect (Model 7AF) Wafer Grinder
11 - 40 Version 1.2 - June 2004
4. Rotate the grind wheel while observing the right probe reading on the Home
Machine menu screen:
a. While gently holding the fringe plate with one hand, manually rotate the
upper right spindle grind wheel.
Note:
If you rotate the wheel too far, causing the probe to fall off the fringe plate:
• Slowly push the probe bellows up with your fingers and
• rotate the wheel in reverse while supporting the probe.
• Slowly release the bellows when the probe is again above the fringe
plate, permitting the probe to again rest on the fringe plate.
b. Record the probe readings displayed at Points A, B, and C as shown in
Figure 11-4, above.
Point A ___ Point B ___ Point C ___
GOAL: The readings at Points A, B, and C should be within +/- 2
microns of equal.
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