Replacing the Canon LV-X4E projector lamp

Written by
  • Shelagh M.
  • 9 years ago

Canon_LV-X4E_projector_Cano_ LV-LP21 9923A001_projector lampOur step-by-step guide helps you install a replacement  Canon LV-X4E projector lamp.

Invest in authentic

To keep your Canon LV-X4E projector working at its best you should always invest in an authentic Canon LV-X4E projector lamp. Your Canon LV-X4E projector uses the Canon LV-LP21 (9923A001) and while there are a lot of choices on the internet, be sure to look for the seal of approval.  Learn the 7 ways to spot a counterfeit projector lamp.
Reasons to avoid generic projector lamps:

Simplify your life and buy an authentic projector lamp. Still not sure about generics?

Find this lamp sold on Amazon by these authorized dealers:

End of lamp life warnings


When the Canon LV-LP21 projector lamp has reached its end of life the LAMP REPLACE on the Canon LV-X4E projector lights yellow. Replace the projector lamp immediately when you see this. Other warning signs may be a dim picture, color that appears washed or an image that is fading.

Replace the projector lamp

Before changing the projector lamp:

  • Let the Canon LV-X4E cool down for at least 45 minutes. This projector operates at an extremely high temperature and you could get badly burned if it’s still hot. Don’t rush it.
  • Be sure to unplug the electrical cord so there is no chance the projector could get turned on during the installation. This could damage your projector.


  • Loosen the two screws holding the projector lamp cover in place. Place the cover aside.
  • Loosen the two screws on  with a screwdriver and pull out the Canon LV-LP21 lamp assembly by using the built in handle.
  • NOTE: The used LV-LP21 projector lamp contains mercury and should be properly recycled. Don’t throw it into regular garbage.
  • Pulling too quickly can cause the projector bulb to shatter. Learn how to clean up a broken lamp.
  • Insert the replacement Canon LV-LP21 projector lamp. Be careful not to touch the actual bulb as oil from your fingers can leave black marks on the lamp.
  • Tighten the two screws on the lamp.
  • Put back the lamp cover and tighten its two screws.
  • Connect the AC power cord to the Canon LV-LP21 and turn on the projector to reset the lamp timer.

Resetting the lamp timer counter

After replacing the Canon LV-X4E projector lamp, you’ll need to turn off the LAMP REPLACE indicator by resetting the LAMP REPLACE COUNTER. The counter tracks the number of hours the lamp the Canon LV-X4 projector has been used and triggers the warning light when the lamp is reaching its end of life. Not resetting it after may stop your projector from turning back on.


  • Turn the projector on and press the MENU.
  • The On-Screen menu will be displayed on the left.
  • Using the arrow buttons, mover the red frame pointer to the SETTING menu icon.
  • Press the up/docwn buttons, move to the LAMP COUNTER option.
  • Press OK to open up as the RESET LAMP COUNTER box.
  • Click on the SET option to open a confirmation window.
  • The message “Lamp replace counter reset?” is displayed.
  • Click on YES.
  • Press OK.
  • The lamp hours will be reset to zero.

Learn how to prolong lamp life. Top tips for extending projector lamp life.

 Go green, save money

Canon_LV-X4_projector_bulb_only_Canon_LV-LP21_reset_projector_lamp_tracker If you would like to save some money try replacing only the Canon LV-LP21  bare lamp rather than the entire Canon LV-X4E  lamp unit. You recycle the plastic cage and reduce waste. Watch our training video.

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