Sony XAV-AX8100 Help Manual page 98

Help Guide
In-Car Receiver
XAV-AX8100/XAV-AX8150
The connected HDMI device cannot be played.
Check the supported file formats for the connected HDMI device.
HDMI devices formatted with file systems other than 480p, 576p, or 720p are unsupported.
If [No Video Signal] appears on the display, set the resolution of the HDMI device to match the resolution of the unit.
Check that the HDMI cable is firmly inserted to the unit. It is also recommended to use a certified HDMI cable.
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