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4. MAINTENANCE
4.1 Light Source Check and Replacement
The service life of the xenon lamp is 300 to 500 hours, but it differs considerably from
one light source to another. It is therefore difficult to predict life expectancy from
operating hours. It is generally predicted from noise on the measured data. Compare
the current data with the data on delivery (data obtained with a new light source) to
make decision.
Note
: Noise may also appear if the line voltage fluctuates abruptly.
Observe the following guidelines in order to maximize the service life of the xenon lamp.
. If the light source is not used for an extended period, turn it off. However, if the light
source will be inactive for an hour or less, leave it on Frequently turning the light
source on and off will shorten its service life.
. Always feed cooling water to the light source (450W light source).
<Procedure>
WARNING
: Carefully read the
″
Safety Cautions
″
at the beginning of this manual.
(1) Turn OFF the
″
Power
″
switch located on the main unit.
(2) For the 150W light source, remove the light source cover and then remove the
anode holder and the light source. For the 450W light source, remove the anode
holder, and then loosen the cathode fixing screw with a screwdriver through the
hole on the side cover to remove the light source.
Note
: The 150W light source is attached to the anode holder.
(3) For the 150W light source, remove the anode holder and cathode adapter from the
light source, and attach them to a new light source.
(4) Mount a new light source in the position of the old light source.
CAUTION
: Confirm that the glass protrusion of the Xe lamp does not face the M
0
and
M
1
mirrors.
CAUTION
: Do not mistake the polarity of the Xe lamp.
