Install a replacement Panasonic PT-AX100U projector lamp

Written by
  • Shelagh M.
  • 9 years ago

Panasonic_PT-AX100U_projector_Panasonic_ET-LAX10_projector_lampThis instructional guide shows you how to install a new Panasonic PT-AX100U projector lamp.

Lamp life

The brightness of the Panasonic PT-AX100U projector lamp decreases as it reaches end of life. At 1800 hours of lamp life, the LAMP indicator will turn on and an onscreen message REPLACE LAMP appears on the upper left for 30 seconds. At 2000 hours, the message will appear and stay on screen until the lamp has been replaced. If the lamp usage time has passed 2 000 hours the projector will switch to standby mode after approximately 10 minutes of operation.

The importance of authentic lamps

It’s easy to get duped into buying an inferior knock-off lamp posing as an authentic lamp. In order to keep your Panasonic PT-AX100U working at its best, you should always install an authentic projector lamp. OEM projector lamps are calibrated to work in harmony with your projector.

Find this lamp on Amazon sold by these authorized dealers:

Why avoid generics?

Save time and money by installing an authentic lamp. Look for the seal of approval before buying. The Panasonic PT-AX100U uses the Panasonic ET-LAX100 projector lamp.

Replacing the projector lamp

Follow these important safety tips before changing the projector lamp:

  • Switch off the power to the projector.
  • After waiting 30 seconds, disconnect the power cord.
  • Allow the Panasonic PT-AX100U projector to cool down for at least 30 minutes. If should be cool to the touch. This projector runs using high temperatures and you can burn yourself badly if you don’t allow the projector to cool down.

To replace the lamp:

Gently place the PanasonPanasonic_PT-AX100U_projector_Panasonic_ET-LAX10_replacement_projector_lampic PT-AX100U on a soft surface. Use a Phillips screwdriver to loosen the lamp  at
the bottom of the projector.Panasonic_PT-AX100U_projector_Panasonic_ET-LAX10_remove_projector_lamp
Loosen the two screw holding the Panasonic ET-LAX100 projector lamp in place
Hold the handle of the lamp unit and gently pull it out from the projector.
Be sure to recycle the burnt out Panasonic ET-LAX100 as it contains mercury. Do NOT place it into regular garbage.
Insert the new lamp into the projector,  double checking that the placement is correct.
Tighten the lamp screws on the newly installed Panasonic ET-LAX100 projector lamp
Put the lamp cover back onto the projector and tighten screws.
Turn the projector back one and you now ready to reset the lamp timer.

Resetting the projector lamp timer

Each time you switch to a new Panasonic PT-AX100U projector projector lamp you need to reset the  projector lamp timer..
Panasonic_PT-AX100U_projector_Panasonic_ET-LAX10_reset_lamp_timerTo reset:

  • Turn the projector on.
  • Press the POWER button to project a picture on screen.
  • Press the MENU button to display the menu screen, and then press the F or G button to select the OPTION menu.Press the ENTER button, and then press the F or G button to select LAMP RUNTIME.
  • Press and hold the ENTER button for approximately 3 seconds. The confirmation screen, “LAMP RUNTIME RESET is displayed and select OK.
  • Turn off the power. This will reset lamp timer to zero.


Learn more tips for extending the projector lamp life in your Panasonic PT-AX100U projector.

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