Sony PCM-A10 Help Manual page 245

Help Guide
Linear PCM Recorder
PCM-A10
You cannot establish a Bluetooth connection with the one-touch operation (NFC
connection).
Your linear PCM recorder is turned off. Make sure that the power to the linear PCM recorder is turned on.
The NFC function of your linear PCM recorder is turned off. While playback is on standby, select [
[NFC Settings] from the HOME menu and make sure that [ON] is selected.
Select [ Bluetooth] - [NFC Settings] - [Advanced] from the HOME menu and see if either [Audio Device Only] or
[REC Remote Only] is selected. You cannot establish an NFC connection with the device that is not selected. If this is
the cause of the issue, select [Auto(Preferred)].
Unlock the smartphone screen.
The NFC function of the smartphone is turned off. Depending on the smartphone, you need to turn on the NFC
function or the power. For detailed instructions, refer to the manual supplied with the smartphone.
During a pairing attempt with the smartphone to use REC Remote, [Bluetooth pairing request] may appear in
[Notifications] on the smartphone. View the [Notifications] list and tap [Bluetooth pairing request], and then select
[Pair].
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