Epson EpiqVision Ultra LS800 4000-Lumen Pixel-Shift 4K UHD Ultra-Short Throw Laser 3LCD Smart Home Theater Projector (Black) - Manual (Page 124)

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Replacing the Remote Control Batteries
Solutions to HDMI Link Problems
If you cannot control an HDMI device using the HDMI Link feature, try the following solutions:
• Make sure all necessary cables are securely connected and the power is on for the projector and
connected audio and video sources.
• Make sure the cables meet the HDMI CEC standard.
• Make sure the connected device meets the HDMI CEC standard. See the documentation supplied
with the device for more information.
Note: Some connected devices or functions of those devices may not operate properly even though
they meet the HDMI CEC standard.
• Replace the HDMI cable or try a shorter one.
• Make sure the HDMI CEC setting is enabled.
• Make sure the connected devices are turned on and in standby status. See the documentation
supplied with the device for more information.
• If you connected a new device or changed any connections, make sure the CEC function is set for the
connected device. You may need to restart the device.
Parent topic: Solving Projector or Remote Control Operation Problems
Related references
Projector Feature Settings - Settings Menu
Related tasks
Operating Connected Devices Using the HDMI Link Features
Solving Network Problems
Check the solutions in these sections if you have problems using the projector on a network.
Solutions When Wireless Authentication Fails
Parent topic: Solving Problems