Here are the default MIDI Note Numbers that are assigned to the trigger inputs on the TM-2. These numbers are assigned from the factory and are also reinstated if a factory reset is performed on the TM-2:
TRIGGER INPUT 1H (Head) = 36
TRIGGER INPUT 1R (Rim) = 35
TRIGGER INPUT 2H (Head) = 38
TRIGGER INPUT 2R (Rim) = 40