Samsung Q60B - Subtitles Appear on the TV Screen; The HDR of the Connected External Device Turns off

Subtitles appear on the TV screen.
Turn off the Subtitle function in Subtitle Settings.
• Menu Settings All Settings General & Privacy Accessibility Subtitle Settings Subtitle
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The HDR of the connected external device turns off.
Expand the reception range of the corresponding HDMI input signal in Input Signal Plus.
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Menu Settings All Settings Connection External Device Manager Input Signal Plus
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