Sony RDR-VX521 - Manual (Page 22)

22
Notes
• Depending on the connected unit, you may not be able
to control your AV amplifier (receiver) with some or
any of the buttons.
• If you enter a new code number, the code number
previously entered will be erased.
• When you replace the batteries of the remote, the code
number may be reset to the default setting. Set the
appropriate code number again.