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Page 70
2000-1252-01
Released Rev. C
VersaPort 2200 Technical Manual
Chapter 4: Service
CAP1 – Align Laser Detector System
a
_____4. Adjust the beam until the PC displays a threshold value less than or equal to
30.
_____5. Tighten the lower screw with spring until the spring coils touch, as shown in the
center image of
. Do not over-tighten screw.
_____6. Check the DAC value again. If it is greater than 30, readjust the beam position
using the adjustment screws.
_____7. When the DAC value is less than or equal to 30 (and the bottom screw with
spring is tight) tighten the top screw with spring. Check the DAC value again
and verify it is less than or equal to 30.
_____8. At the PC, press the
F4
key to stop calibration.
Adjust Corner Mirror
WARNING
LASER HAZARD
L
ASER
RADIATION
PRESENT
WHEN
POWER
APPLIED
AND
INTERLOCK
DEFEATED
. A
VOID
DIRECT
EYE
EXPOSURE
.
_____1. If the laser beam is properly aligned as in
below, proceed to
Wafer Protrusion Sensor” on page 71
. Otherwise, proceed to Step 2.
_____2. Use a 0.050-inch Allen wrench to turn the corner mirror adjustment screws so
the laser beam is visually centered in the Wafer Protrusion Mirror as shown in
. If the adjustment screws are tight and the beam does not move,
loosen the springs with screws one-quarter turn.
NOTE . . .
I
F
THE
ADJUSTMENT
SCREWS
ARE
TIGHT
AND
THE
BEAM
DOES
NOT
MOVE
,
LOOSEN
THE
TWO
SCREWS
WITH
SPRINGS
ATTACHED
APPROXIMATELY
ONE
-
QUARTER
TURN
.
F
IGURE
23
Mirror adjustment
Laser
Beam
Wrong
Wrong
Correct
Laser
Beam
Laser
Beam
Protrusion Mirror Bracket
Summary of Contents for VersaPort 2200
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