Maintenance; Replacing The Lamp - NEC MultiSync LT81 User Manual

4 M A I N T E N A N C E
This section describes the simple maintenance procedures you should follow
to replace the lamp and replace the batteries in the remote control.

Replacing The Lamp

After your lamp has been operating for 1000 hours or longer, the "sta-
tus" light in the cabinet will turn red. Even though the lamp may still be
working, replace it at 1000 hours to maintain optimal projector perform-
ance.
• DO NOT TOUCH THE LAMP immediately after it has been used. It will
be extremely hot. Allow at least one hour for the lamp to cool before
handling.
• DO NOT REMOVE ANY SCREWS except the lamp cover set screw
and two lamp case screws. You could receive an electric shock.
• Turn off the main power to the projector and disconnect the power cord.
Allow at least one hour for the lamp to cool.
• The projector will turn off and go into stand by mode after 1100 hours of
service. If this happens, be sure to replace the lamp. If you continue to
use the lamp after 1000 hours of use, the lamp bulb may shatter, and
pieces of glass may be scattered in the lamp case. Do not touch them as
the pieces of glass may cause injury. If this happens, contact your NEC
dealer for lamp replacement.
Lamp replacement procedure
1. Switch off the main power and unplug the power cord.
2. Turn the main unit so that the bottom is up.
3. Loosen the lamp cover retaining screw.
4. Slide the lamp cover in the direction of the arrow and remove it.
CAUTION: Do not use a lamp other than the NEC replacement lamp.
Order this from your NEC dealer using your projector's model num-
ber.
5. Loosen the three retaining screws for the lamp housing.
(There is an interlock on the lamp housing to prevent the risk of electri-
cal shock. Do not attempt to circumvent this interlock.)
6. Holding the handle, pull the lamp housing forward and take it off.
7. Install the new lamp housing and fasten with the three screws.
8. Fasten the three screws for the lamp housing.
9. Install the lamp cover back in its original position and fasten with the
retaining screw.
10. Reset the lamp time.
Select the lamp usage time menu, then press the ON button on the re-
mote controller and hold it down for at least ten seconds.
NOTE: If resetting the lamp clock back to zero after 1100 hours of
service, press the "Power Off" (not "Power On") button on the remote
control for ten seconds. Do this only after replacing the lamp.
CAUTION
LT100
Lamp cover
Lamp housing

MAINTENANCE

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LT81
Step 3
Step 4
Step 5
Step 6
Step 7,8
Step 9
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