Sony MHC-V73D Help Manual page 169

Help Guide
Home Audio System
MHC-V73D
Pairing cannot be performed.
You cannot perform pairing simply by holding down BLUETOOTH/
the BLUETOOTH function first, and then hold down BLUETOOTH/
Move the BLUETOOTH device closer to the system.
Pairing may not be possible if other BLUETOOTH devices are present around the system. In this case, turn off the
other BLUETOOTH devices.
Make sure to enter the correct passkey when selecting the system's name (this system) on the BLUETOOTH device.
Related Topic
Pairing and connecting with BLUETOOTH devices
5-014-121-11(1) Copyright 2020 Sony Corporation
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PAIRING on the system. Be sure to activate
PAIRING to perform pairing.