Sony DVP-NC655P Marketing Operating Instructions Manual page 66

* Once you set the code number for AV amplifier
(receiver), VOL +/– buttons adjust the volume of
AV amplifier. To adjust the volume of TV, set 90
(default) as the code of AV amplifier.
Controlling the volume of your
AV amplifier (receiver) with the
remote
Number
buttons
1
Hold down [/1, and enter your AV
amplifier (receiver)'s manufacturer's
code (see the table below) using the
number buttons.
2
Release [/1.
You can control the volume of the AV
amplifier (receiver) using VOL +/–.
66
Code numbers of controllable AV
amplifiers (receivers)
If more than one code number is listed, try
entering them one at a time until you find the
one that works with your AV amplifier
(receiver).
Manufacturer Code number
Sony 80, 88, 89, 91
Denon 84, 85, 86
Kenwood 92, 93
Onkyo 81, 82, 83
Pioneer 99
Sansui 87
Technics 97, 98
Yamaha 94, 95, 96
If you do not control an AV amplifier
(receiver)
You can control your TV's volume by setting
the code number to 90 (default).