I purchased the unit from a private party and the original owners manual was not available. Having the ability to download it was extremely helpful and clarified operating the equipment immensely. This is a complicated unit and without the manual I would not have been able to maximize it's potential. Thank you.
Text excerpt from page 7 (click to view)
Volume level appears.
You cannot select some sources if they are not ready. * Only for KD-AR760.
Volume level indicator
â¢ For FM/AM tuner only
Adjust the sound as you want. (See pages 17 â 19.)
To drop the volume in a moment (ATT)
â¢ For SIRIUSÂ® radio only
To restore the sound, press it again.