*The projector or the connected device (PC, TV, etc.) is muted.
*Dolby sound is not supported, exit to play again.
*The audio format is not supported by the projector.
* Encryption applied to the videos or media player which holds the video. Try more videos to define this possibility.

*The video format is not supported by the projector.
*Encryption applied to the videos or media player which holds the video.
* lf the lamp of the projector is off with only audio playing, the lamp is defective. Please contact seller for a replacement.
*Try another HDMl cable if you select the HD input source.

Make sure the video source has a fine resolution.
* Reset the projector to manufacturer seling: Enter "'Settings" on the home page,then choose "General" and select "Factory reset"

Check if the fan noise increases or the fan stops working. Unplug the projector and contact XuanPad team for assistance.* Make sure the oullet and projector power adapter are not wet or humid which wil cause sparks or smoke on outlet when power on the projector

Please contact XuanPad for assistance when this occurs.

When a single angle adjustment exceeds 30", it may not be possible to focus due to excessive angle adjustment. Therefore, we recommend adjustingwithin the angle range of 0-30" and wait 3-5 seconds.