Chapter V – Troubleshooting
5-25
C
996-0255 rev. b
d. Now, power the system back up and activate PGM-
1 to allow the system to warm up. Only the oscilla-
tor should be flashing at this time.
2) On the RB601 activate PGM-2, turn on SHUTTER and Q-
SWITCH and then press FIRE to take single shot oscilla-
tor burns.
Note:
The oscillator must be properly aligned before attempt-
ing to adjust the amplifier. If the oscillator is not aligned
then refer to the oscillator alignment and optimization
section (page 5-12).
3) On the RB601 turn off SHUTTER and Q-SWITCH.
4) Position the burn paper (placed inside a plastic bag) on
the laser bench between the aperture and the amplifier
head.
5) The emulsion side of the paper should face the incoming
beam.
6) On RB601 turn on SHUTTER and Q-SWITCH and then
press FIRE to get a single shot burn pattern.
7) On RB601 turn off SHUTTER and Q-SWITCH.
8) Remove the burn paper from the plastic bag and examine
the burn pattern. Refer to the amplifier burn patterns, p.
5-23.
Note:
The burn pattern should be a sharply defined dark
brown circle. Within the circle there should be another
round image that is slightly smaller then the dark brown
one. This smaller image will be a lighter color which
indicates higher energy. When the the beam is perfectly
aligned through the aperture the light brown image will
be centered on the dark one.
9) Determine if the oscillator beam is well aligned through
the aperture. If the light brown image is not centered on
the dark brown circle then adjustments will have to be
made.
10) Adjust the 7c mount. The screws located on the top of the
mounts control the vertical and horizontal axes.
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