Samsung WM55B Flip Pro 55" 4K Interactive Touchscreen LED Display - Manual (Page 71)

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Anynet+ issues
The connected device is not displayed. Check whether or not the device supports Anynet+ functions.
Check whether or not the HDMI cable is properly connected.
Check whether Anynet+ (HDMI-CEC) is set to On in Menu → SETTINGS →
External Device Manager .
Search Anynet+ devices again.
Anynet+ requires an HDMI connection. Make sure the device is connected to your product
with an HDMI cable.
Some HDMI cables may not support Anynet+ functions.
If the connection is terminated because there has been a power failure or the HDMI cable has
been disconnected, please repeat the device scan.
Other issue
The product smells like plastic. The plastic smell is normal and disappears over time.
Small particles are found on the edges of the product. The particles are part of the product design. The product is not defective.
When I try to change the PC resolution, a message
"
The defined resolution is not currently supported. "
appears.
The message " The defined resolution is not currently supported. " appears if the input source
resolution exceeds the maximum resolution of the product.
To resolve the issue, change the PC resolution to a resolution supported on the product.
There is no sound from the speakers in HDMI mode
when a DVI-HDMI cable is connected. DVI cables do not transmit sound data.
HDMI Black Level is not functioning properly on an
HDMI device with YCbCr output.
This function works only when the HDMI signal of the external device is RGB output.
There is no sound in HDMI mode. Displayed picture colors may not look normal. Video or sound may not be available. This
can occur if a source device that only supports an older version of the HDMI standard is
connected to the product.