Replacing the NEC NP-M311W projector lamp

Written by
  • Shelagh M.
  • 10 years ago

NEC-M311W-ProjectorsNEC_NP16LPReplacing the NEC NP-M311W projector lamp is easy. Just follow our handy guide.

Your NEC NP-M311W projector uses the NEC NP16LP lamp. New air filters are shipped with the lamp and it’s recommended you replace them at the same time as the NEC NP16LP  lamp. Be sure to invest in an authentic NEC NP-M311W portable projector lamp.

End of life warning

When the lamp has reached end of life, the LAMP indicator will begin to blink red.
When the lamp has reached its end of life, the LAMP INDICATOR will blink red and the message LAMP HAS REACHED THE END OF ITS USABLE LIFE. PLEASE REPLACE THE LAMP AND FILTER.
The message about replacing the lamp is displayed for one minute when the projector is turned on and when the POWER button or remote control is pressed. Remove the message by pressing any button on the projector or remote control.
The progress indicator shows the percentage of remaining bulb life. When the lamp usage reaches 0, the Lamp Life REMAINING starts a count down from 100 hours. When the count down reaches 0, the projector will turn off and not turn on.

Buy this lamp on Amazon from the following authorized dealers:

Why buy authentic

Always invest in a genuine NEC NP16LP lamp. These OEM original lamps have been calibrated to work with your NEC NP-M311W projector to keep the sophisticated components working properly. While generic lamps may be sold at discount prices, their inferior workmanship and cheap materials often result in damage to the interior of projectors. They are also prone to explosions which can release toxic heavy metals into the air as well as damage your projector beyond repair. Read more about the 7 Ways to Spot a Counterfeit Lamp.

Changing the  NEC NP16LP lamp

Follow these important safety instructions before installing the new lamp

  • turn off the NEC NP-M311W projector.
  • unplug the projector from its power source.
  • unplug the power cable.
  • wait until the projector is cool to the touch to avoid getting burned.

NEC_M311W_NEC_NP16LP_remove_lamp_screwLoosen the NEC NP-M311W lamp cover screw.
Push and slide the lamp cover off.
Loosen the two screws holding the NEC NP16LP lamp in place. (The screws will not come out only loosen.)
Remove the lamp by holding the indent and pulling up.
NOTE: Your NEC NP16LP lamp should be properly recycled. These lamps contain mercury and can’t be placed into common garbage.
NEC_M311W_install_new_NEC_NP16LP_lampInstall a new lamp housing into the projector, gently pressing the lamp housing into the socket. Take care not to touch the actual bulb as your finger prints can leave oil marks that burn black marks onto the bulb.
Push the top center on the lamp to secure it. Tighten the screw on the lamp.
Reattach the NEC NP-M311W lamp cover by sliding the cover until it snaps into place. Tighten the screw on the lamp cover.

Replacing the filters

There are four filters in the NEC NP-M311W projector:

  • Honeycomb hard filter – large and small
  • Accordion soft filter — large and small

Replace all four filters at the same time. Before replacing the filters wipe off any dust and dirt that came loose from the old filters. NOTE: The filters are made with two different types of material in the membrane. Both are perform the same.
NEC_M311W_NEC_NP16LP_remove_air_filterPush the catch to release the filter and gently pull it out.
The filter cover is fixed at six separate points in the projector. Bow the filter cover by pushing it slightly until it releases.
NEC_M311W_NEC_NP16LP_replace_dark_filtersRemove the dark sponge filter and clean the filter unit and cover. Attach the new non-woven white material filters.

  • Filter unit: Attach two honeycomb hard filters to the NEC NP-M311W filter unit.
  • Filter cover: Attach the two accordion soft filters to the filter cover. Be sure to align the accordion slits with the protrusions of the filter cover.

Attach the filter cover back to the filter unit. Align the filter until with the filter cover and push the protrusions into place.
Make sure all the six mounting points are aligned properly.
Insert the two catches of the top of the filter into the groove of the cabinet.
Push the filter until it clicks into place.

Reset the lamp timer

Once the NEC NP16LP lamp lamp and NEC NEC NP-M311W filter have both been replaced you will need to reset the timer for both. You want the projector to be able to accurately track the lamp life.

NEC_M311W_NEC_NP16LP_lamp_timerClear usage hours and reset hours

  • Plug in the power cored into the wall outlet.
  • Turn on the projector.
  • From the MENU select RESET.
  • A confirmation message appears.
  • Select YES.

Reset the filter hours:

  • Scroll up to CLEAR Filter HOURS.
  • A second submenu will appear.
  • Select YES. Press the ENTER button.

Extending the life of the NEC NP16LP lamp

Get your newly installed NEC NP16LP lamp will  last longer by choosing the ECO option. The ECO MODE increases lamp life by lowering the power consumptions. There are three modes to choose from:

  • Auto Mode: 4000 hours
  • Normal: 5000 hours
  • Eco ModeL 8000 hours

Learn more tips to extend the life of the NEC NP16LP lamp.

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