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• Check the cable connection between the projector and your video source.
• If you are using a Mac and you do not hear sound from an HDMI source, make sure your Mac
supports audio through the HDMI port. If not, you need to connect an audio cable directly to your
speaker system.
• HDMI audio is only supported using PCM. Make sure your audio source is set to the PCM setting.
• If you turn the projector on immediately after turning it off, the cooling fans may run at high speed
momentarily and cause an unexpected noise. This is normal.
Parent topic: Solving Image or Sound Problems
Related tasks
Shutting Off the Picture and Sound Temporarily
Controlling the Volume with the Volume Buttons
Connecting to an HDMI Video Source
Solutions to Bluetooth Audio Problems
If you cannot connect to a Bluetooth audio device, try the following solutions:
• Make sure the Bluetooth Audio setting is turned on in the Settings menu. If you are using the
projector's speaker or headphones, turn this setting off.
• Select Search Bluetooth Device in the Settings menu when you pair a Bluetooth audio device for
the first time or change to another Bluetooth audio device.
• Make sure the Bluetooth audio device is paired to the projector and not to another device.
• Make sure the Bluetooth audio device that is paired to the projector supports copyright protection
(SCMS-T) and A2DP.
• Check the volume level on the paired Bluetooth audio device.
• Make sure there are no obstacles between the Bluetooth audio device and the projector and that the
Bluetooth audio device is within the specified communication distance. Avoid using the projector near
wireless networks, microwave ovens, 2.4 GHz cordless phones, or other devices that use the 2.4 GHz
frequency band.
Parent topic: Solving Image or Sound Problems
Related references
Projector Feature Settings - Settings Menu
Related tasks
Connecting to a Bluetooth Audio Device
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