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Precautions
Before starting service on the LW250 Laser, read the following precautions carefully:
Read the instructions and precautionary information in this chapter BEFORE
starting any service procedures.
Turn OFF the power to the laser before starting service work. If the high voltage
has been ON, wait for 5 minutes for the capacitors to discharge after turning OFF
power before starting work.
When turning on the high
voltage for maintenance
work, set the laser head
cover interlock switch (see
Figure 8-1) to the
Maintenance Mode.
The Nd:YAG laser becom-
es ready for oscillation if
the high voltage is turned
ON during service
procedures. Use extreme
caution while performing
any work on the laser.
WARNING: Service personnel or anyone who is subject to
possible Nd:YAG laser beam exposure must wear safety goggles
having a minimum optical density of 6 at 1,064 nanometers
wavelength.
Flash Lamp Replacement
You can operate the YAG laser with the laser cover removed, but you must use extreme care to
avoid touching high voltage parts and being irradiated by the laser beam. The tools and supplies
that you will need for this procedure are as follows:
990-605 REV B: May, 1997
CHAPTER 8
SERVICE
LW250 PULSED Nd: YAG LASER
Figure 8-1. Setting the Maintenance Mode
LASER36.PCX
8-1
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