"Other" key not working
I work in a theater that uses a 260 for our crossover. We've had some trouble recently with feedback on our wireless over-ear microphones. I wondered if we were using the AFS feature on the 260 (a previous employee installed it years ago and no one currently working knows much about it). But when I press the "Other" key, it only brings up the Subharmonic Synthesizer menu. Subsequent presses will not take me to the AFS menu or the Notch Filter menu. Any ideas on how to fix this problem? We are not using the GUI, just the front panel controls. Any help would be appreciated. Thanks!