During calibration, the 571 requires continuous paging or music signal at its HOUSE PAGE, MUSIC IN or PAGE MIC inputs, if the PAGE/MUSIC switch on the rear of the 571 is in the “MUSIC” position. If the PAGE/MUSIC switch is in the “PAGE” position, calibration of the 571 requires continuous paging signal at either the HOUSE PAGE input or the PAGE MIC input. If the MUSIC/PAGE ERROR LED flashes, it means that the calibration was unsuccessful, because there was not enough signal present at the appropriate input(s).

Check the position of the MUSIC/PAGE switch. If it is in the “MUSIC” position, check that paging or music signals are being generated continuously and that they are at an appropriate level, i.e. line level (0dB) for the HOUSE PAGE or MUSIC IN inputs, and mic level (-40dB) for the PAGE MIC input. Make sure that these signals are actually reaching the desired 571 input (check your cables).

If the MUSIC/PAGE switch is in the “PAGE” position, check that paging signals are being generated continuously and that they are at an appropriated level, i.e. line level (0dB) for the HOUSE PAGE input, and mic level (-40dB) for the PAGE MIC input. Make sure that you are sending continuous signal to one of the page inputs, not the music input, and make sure that these signals are actually reaching the desired 571 input (check your cables).

If you are using the PAGE MIC input, check that the PAGE MIC trimpot has been turned clockwise. If this trimpot is turned part of the way to the full clockwise position, and the MUSIC/PAGE ERROR LED flashes when you attempt a calibration, try turning the PAGE MIC trimpot completely clockwise.