Epson PowerLite L400U, User Manual, Page: 231 / 262

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• If the projector's light source turns off unexpectedly, the A/V mute timer may be enabled. Select Off as
the A/V Mute Timer setting.
• If the power button on the remote control does not turn on the projector, check its batteries and make
sure the Remote Receiver setting is turned on in the projector's menu, if available.
• The power cord may be defective. Try another power cord. If that doesn't work, disconnect the cord
and contact Epson.
Parent topic: Solving Projector or Remote Control Operation Problems
Related references
Projector Feature Settings - Settings Menu
Projector Light Status
Related tasks
Turning On the Projector
Unlocking the Projector's Buttons
Solutions to Problems with the Remote Control
If the projector does not respond to remote control commands, try the following solutions:
• Check that the remote control batteries are installed correctly and have power. If necessary, replace
the batteries.
• Make sure you are operating the remote control within the reception angle and range of the projector.
• Make sure the projector is not warming up or shutting down.
• Check to see if a button on the remote control is stuck down, causing it to enter sleep mode. Release
the button to wake the remote control up.
• Strong fluorescent lighting, direct sunlight, or infrared device signals may be interfering with the
projector's remote receivers. Dim the lights or move the projector away from the sun or interfering
equipment.
• If available, turn on one of the remote receivers in the projector's menu system, or check if all the
remote receivers were turned off.
• If you assigned an ID number to the remote control to operate multiple projectors, you may need to
check or change the ID setting (feature not available with all projectors).
• Make sure the Remote Control Type setting in the Extended menu is set to Normal if you are using
the remote control that came with the projector.
• If you lose the remote control, you can purchase another from an authorized Epson reseller.