E–52
4. MAINTENANCE
This section describes the simple maintenance procedures you should
follow to replace the lamp.
Replacing the Lamp
After your lamp has been operating for 1000 hours 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 1000 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 90
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 three lamp case screws. You could receive an elec-
tric shock.
• 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.
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 three screws securing the lamp housing until the screw-
driver goes into a freewheeling condition. The three screws are
not removable.
4 Insert a new lamp housing until the lamp housing is plugged into
the socket.
AC
IN
PC CARD
USB
AUDIO
VIDEO
S-VIDEO
RGB
PC CONTROL
AC
IN
PC CA
RD
USB
AUD
IO
VID
EO
S-VID
EO
RG
B
PC
CON
TROL
AU
DIO
RG
PC
CO
NTR
OL
Interlock
3 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.
AUDIO
RGB
PC CO
NTR
OL
5 Secure it in place with the three screws.
AU
DIO
S-V
ID
EO
RG
B
PC
C
ON
TRO
L
6 Reattach the lamp cover.
AU
DIO
S-V
IDE
O
RG
B
PC
CO
NTR
OL
7 Tighten the lamp cover screw.
AU
DIO
RG
B
PC
C
ON
TR
OL
8 After you install a new lamp, select the Main menu
→
[Projector
Options]
→
[Setup]
→
[Page 4]
→
[Clear Lamp Hour Meter] to
reset the lamp usage hours.
If the projector will not be turned on after using 1100 hours of
service, press and hold the [Help] button on the remote control for
ten seconds or longer to reset the lamp time clock to zero.
CAUTION: Do not use a lamp other than the NEC replacement lamp (LT50LP).
Order this from your NEC dealer.
Be sure to tighten the screws.
Be sure to tighten the screw.
