NEC MT 1020G /820G - Manual (Page 28)

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This section describes the simple maintenance procedures you
should follow to replace the lamp, clean or replace the filter, and
replace the batteries in the remote control.
Replacing The Lamp
After your lamp has been operating for 2000 hours or longer, the
“status” light in the cabinet will go on. Even though the lamp may
still be working, replace it at 2000 hours to maintain optimal
projector performance.
CAUTION
• 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 be in standing by after 2100
hours of service. If this happens, be sure to replace the lamp.
If you continue to use the lamp after 2000 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. Remove the single screw that secures the lamp housing cover
and remove the cover.
2. Remove the two screws securing the lamp case. (There is an
interlock on this case to prevent the risk of electrical shock. Do
not attempt to circumvent this interlock.)
3. Remove the lamp by pulling out the complete assembly.
4. Install a new lamp case assembly and secure it in place with the
two screws.
CAUTION: Do not use a lamp other than the NEC replacement
lamp.
Order this from your NEC dealer using your projector's model
number.
5. Reattach the lamp cover and reinstall the single screw.
6. After you install a new lamp, select the lamp Usage icon and
press and hold the "Power On" button on the remote control for
ten seconds to reset the lamp time clock to zero.
NOTE: If resetting the lamp clock back to zero after 2100 hours of service,
press the "Power Off" (not "Power On") button on the remote control for ten
seconds .
NOTE: When you replace the lamp, it is also wise to replace the filter. The
filter comes in the same package with your replacement lamp.
CAUTION: Do not put the LCD projector on end except to
replace the air filter.
M A I N T E N A N C E
Step 1A
Step 1B
Step 2
Step 3
Step 4
Step 5
Interlock
4