Maintenance; Replacing The Lamp - NEC MultiSync VT440 User Manual

4. MAINTENANCE

This section describes the simple maintenance procedures you should
follow to replace the lamp, clean the filter, and replace the batteries
in the remote control.

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 work-
ing, replace it at 2000 (up to 3000 hours in Eco mode) hours to main-
tain 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 30
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 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 3150 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 screw-
driver 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 interlock.
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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 replace-
ment lamp (VT40LP).
Order this from your NEC dealer.
Secure it in place with the two screws.
Be sure to tighten the screws.
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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]
[Setup] [Page 3] [Clear Lamp Hour Meter] to reset the lamp
usage hours.
NOTE: When the lamp exceeds 2100 hours (up to 3150 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 con-
trol 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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