Sony WF-SP900 Help Manual page 142

Help Guide
Wireless Stereo Headset
WF-SP900
The computer does not recognize the player inside the connected charging case.
The computer may take a few minutes to recognize the player in the connected charging case in the following situations.
When you connect the player to the computer via the charging case for the first time.
When you have not used the player for a long period of time.
In this case, connect the player to the computer via the charging case for about 10 minutes. Then, check if the
computer recognizes the player.
If the problem persists, try the following.
1.
Confirm the connections at the following contact points.
Between the charging case and the player.
Between the USB Type-C cable and the charging case. (USB Type-C cable: supplied)
Between the computer and the USB Type-C cable.
Try connecting and disconnecting each contact point several times.
If the terminals of the player are dirty, the computer may not recognize the player. In this case, remove any dirt from
the terminals of the player with gentle running tap water.
2.
Disconnect the charging case and the player from the computer, and then restart the computer.
3.
Restart the player.
Remove the player from the charging case. Hold down the buttons (
restarts. Place the player back in the charging case after the player restarts.
4.
Restart the charging case.
Press the RESTART button (
5.
Connect the charging case to another USB port if the computer has multiple USB ports.
Check if the computer now recognizes the player in the charging case.
If devices other than the player and the charging case are connected to the computer via USB, disconnect the other
devices.
If you are using one of the following devices, remove the device from the computer. Then, connect the charging case
directly to a USB port on the computer.
A USB hub without an AC adaptor
) with a pen or a paper clip to restart the charging case.
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and ) for 30 seconds until the player