When Z333 speakers produce no sound, check the cables and raise volume at both the speaker system and source. Confirm the source is not muted and, on a computer, that the correct output is selected for the connection being used.

Logitech also recommends playing a file stored on the device. If local audio works while streamed content fails, the network or streaming service may be responsible. On a television, console or player with several output modes, the chosen audio route needs checking just as it does on a PC.