16H Manual Page 20
Revised: 11/2015
6. MAINTENANCE
SECTION THREE
6 . 2 Lamp Replacement and Adjustment
WARNING! This must be done with the power switched off and the
lamp cold.
PROFILE LAMP
To change the lamp first remove the lamp house cover. Remove the old bulb
by grasping and pulling the bulb directly up. Remove the new replacement
bulb from its box, With the bulb still in the plastic bag use scissors and cut
open the end of the bag near the two metal pins. Slide the bulb out slightly
to expose the pins. Use the bag to hold the bulb. Slide the pins of the bulb
into place. The ends of the pins should contact the ceramic evenly just
below the two metal contacts of the socket. Then remove the plastic bag
from the bulb.
Switch main power on, remove the objective lens, and set lamp intensity to
low. Verify that the lamp filament projected on the screen is centered over
the crosshairs both up and down and left and right. Re-seat lamp and or
adjust the ceramic holder if required.
If the lamp glass is accidentally touched, wipe the bulb immediately by
swabbing with methanol. The lamp operates at a high temperature and any
finger marks will be “fired” into the surface of the quartz reducing the output
and life of the lamp.
Bulb element in center of
screen no lens in place
Profile lamp shown in
correct position