Maintenance; Replacing The Lamp - NEC VT650 User Manual

4. MAINTENANCE

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

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, replace it at 2000 (up to 3000 hours in Eco
mode) hours to maintain optimal projector performance.
CAUTION
• DO NOT TOUCH THE LAMP immediately after it has been
used. It will be extremely hot. Turn the projector off, wait
60 seconds, and then disconnect the power cable. Allow at
least one hour for the lamp to cool before handling.
• DO NOT REMOVE ANY SCREWS except the lamp
cover screw and two lamp case screws. You could re-
ceive an electric shock.
• The projector will turn off and go into stand by mode after
2100 (up to 3100 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.
To replace the lamp:
1. Loosen the lamp cover screw until the screwdriver goes into
a freewheeling condition and remove the lamp cover. The
lamp cover screw is not removable.
2. Loosen the two screws securing the lamp housing until the
screwdriver goes into a freewheeling condition. The two
screws are not removable.
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 inter-
lock.
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Interlock
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3. Insert a new lamp housing until the lamp housing is plugged
into the socket.
CAUTION
Do not use a lamp other than the NEC replacement lamp
(VT50LP).
Order this from your NEC dealer.
Secure it in place with the two screws.
Be sure to tighten the screws.
4. Reattach the lamp cover.
Tighten the lamp cover screw.
Be sure to tighten the screw.
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5. After you install a new lamp, select [Advanced Menu]
[Projector Options] [Setup] [Page 4] [Clear Lamp Hour
Meter] to reset the lamp usage hours.
NOTE: When the lamp exceeds 2100 hours (up to 3100 hours in
Eco mode) of service, the projector cannot turn on and the menu
is not displayed. If this happens, press the Help button on the
remote control for a minimum of 10 seconds while in standby
mode. When the lamp time clock is reset to zero, the STATUS
indicator goes out.
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