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10. Gently place the lamp and retaining ring
into the lamp box in the instrument.
The outer edge of the lamp should fit
into the machined inset in the lamp
plate.
11. Orient the arrow upward as shown
before locking the lamp retaining ring in
place.
This photo shows the lamp retaining
ring locked, after proper orientation of
the lamp.
Proper positioning helps assure
consistent instrument performance.
12.
Place the lamp retaining ring over the
shoulder screws, and rotate counter-
clockwise (top side to left, bottom to
right) to lock the lamp retaining ring
into place.
This photo shows the ring being rotated
into position.