Digitone. Problems with the Output L / R for panning

When working in any of the tracks (T1 to T4) in AMP when panning left or right, in the output by OUTPUT L / R it is not possible to recognize and remains centered. Do you know what it could be? On the other hand, the panning in the headphones output works perfect.

My tracks pan thru the main outs on both my digitones

I haven’t ever run into this issue. I would check the cables and make sure where the audio is going out to is set for stereo, otherwise it will just stay mono.

Is unison engaged?