Master Volume`

I have an unpowered Kemper Rack. I tried using the Master Volume. The screen comes up, but nothing changes when I turn the knob. Is this normal in an unpowered unit?

When I click the output button:

Output Menu:

Output source
Main Output: Master Stereo
Monitor Output: Master Mono
Direct Output: GTR+Processing
Spdif Output: Stack

Output Volumes
Main Volume: -20.2db
Monitor Volume: -79.8db
Direct Volume: looks like it's disabled
Headphone Volume: -79.8db

Monitor Output and Main Output EQ
Bass Middle Treble and Presence all set to 0

Output Addons
Spdif Volume: 0.0db
Pure Cabinet: 3.0
Space: 3.0

Aux In
All set to 0

Not seeing where the linking is set.

Thanks for your patience. Still navigating my way around this incredible piece of equipment.

I'm still at a loss here. When I go to page 2/6 in the output menu, and turn the knob, the Master Volume comes up at 0.0, and doesn't change when I turn the knob.

I must be missing something.

Thanks!!! I knew I was missing something. I now feel embarrassed

Thanks for your help and patience.