Not knowing what you may have programmed in the M1, I suggest you default the control using keypad, installer menu, 07-Globals, 45, 99. Connect a speaker to Output 1, press the F1 key on a keypad and the fire alarm should activate with voice and alarm on output 1 and siren only on output 2 if a speaker is connected there.
If that does not work, disconnect the speaker from the M1 and measure the resistance on the speaker line. You should read about 6 ohms with a single speaker. If infinite ohms then speaker not connected, 0 ohms means a short on the speaker line.
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