Maintenance; Replacing The Lamp - NEC RT50X User Manual

4. MAINTENANCE

This section describes the simple maintenance procedures you should
follow to replace the lamp and clean the filter.

Replacing the Lamp

After your lamp has been operating for 2000 hours (up to 3000 hours in
Eco mode) or longer, the "Status" light in the cabinet will go on and the
message will appear. Even though the lamp may still be working, re-
place it at 2000 (up to 3000 hours in Eco mode) hours to maintain opti-
mal rear projection display performance.
CAUTION
• DO NOT TOUCH THE LAMP immediately after it has been used. It will be
extremely hot. Turn the rear projection display off, wait 30 seconds, and
then turn off the main power. Allow at least one hour for the lamp to
cool before handling.
• DO NOT REMOVE ANY SCREWS except the lamp cover screws and two
lamp housing screws. You could receive an electric shock.
• The projector will turn off and go into stand by mode after 2100 (up to
3150 hours in Eco mode) hours of service. If this happens, be sure to
replace the lamp. If you continue to use the lamp after 2000 hours (up
to 3000 hours in Eco mode) 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.
For this lamp replacement, use the screwdriver included with the op-
tional lamp kit(RT50LP).
1. Remove the lamp cover on the rear cabinet.
Loosen the two lamp cover screws until the screwdriver goes into a
freewheeling condition and remove the lamp cover. The lamp cover
screws are not removable.
2. Remove the lamp cover on the internal projector.
(1) Loosen the single lamp cover screw until the screwdriver goes into a
freewheeling condition and (2) remove the lamp cover. The screw is not
removable.
(1)
3. Remove the lamp housing.
(1) Loosen the two screws securing the lamp housing until the screw-
driver goes into a freewheeling condition. The two screws are not re-
movable.
(2) Remove the lamp housing by pulling out the handle.
NOTE: There is an interlock on this case to prevent the risk of electrical shock.
Do not attempt to circumvent this interlock.
4. Install the new lamp housing.
(1) Insert a new lamp housing until the lamp housing is plugged into the
socket.
(2) Secure it in place with the two screws.
CAUTION: Do not use a lamp other than the NEC replacement lamp
(RT50LP). Order this from your NEC dealer.
Be sure to tighten the screws.
5. Reattach the lamp cover on the internal projector.
(1) Put the lamp cover to hook the holes.
(2) Slide the lamp cover and tighten the lamp cover screw.
Be sure to tighten the screw.
Hook
(2)
E – 36
Interlock
Lamp housing
(1)
(1)
(1)
(2)
(2)
(2)