Can anyone tell me what ACTUALLY initiates the motor unit failure
message? My azimuth motor is locked in this state, after I had it
completely apart to mend a broken motor carrier (cheap plastic broken,
but unfortunately outside warranty). The motor is definitely not
stuck; it spins happily forwards and back when power is applied
directly. There is a tiny little optical encoder on the motorshaft;
could this be at fault? And what is the other electrical plug into
the carrier for? It holds three wires (blue, green and yellow) but
they don't seem to actually connect to anything on the motor.

Thanks,

Matthew