Sony STR-DN1080 Manual page 13

The sound skips or fluctuates, or the connection is lost. [293]
The sound of your BLUETOOTH device cannot be heard on the receiver. [294]
Severe humming or noise. [295]
Cannot control the receiver using a SongPal device. [296]
"BRAVIA" Sync (Control for HDMI)
The Control for HDMI function does not work properly. [297]
TV sound cannot be heard from the speakers connected to the receiver. [298]
Remote control
The remote control does not function. [299]
If the problem is not solved
Reverting to the factory default settings [300]
Resetting sound fields to the default settings [301]
Customer support websites [302]
Other Information
Trademarks [303]
[1] Introduction
Main features of the AV receiver
Compatible with a variety of connections and high-quality audio/video
formats
Compatible with wired/wireless network, BLUETOOTH®, and USB connections
Connect a Walkman, iPod/iPhone (AirPlay), computer, NAS or USB device to the receiver to
play content on those devices or transmit music to BLUETOOTH headphones/speakers.
Music services such as Spotify and Chromecast built-in are supported.
Compatible with the latest object-based audio formats
Dolby Atmos and DTS:X are supported.
Compatible with high-definition playback of High-Resolution Audio
During network audio playback or content playback on a USB device, the receiver supports
High-Resolution Audio content at up to 5.6 MHz in the DSD format and at up to 192 kHz/24
bits in the WAV, FLAC, and AIFF formats.
Native playback of DSD files is also supported.
Compatible with high-definition 4K video formats (*)
The receiver supports 4K HDR and HDCP 2.2, letting you enjoy high-definition video
images.