Hello all,we have a tm1 at school,10 tool atc.Today after startup it did not want to load/unload tools. Using mdi m06 t2 the tool changer moves to the spindle,tool unclamps but nothing else. after approx 10 sec air stops and an alarm occurs(134). I can load/unload a tool into the spindle using the tool release on the panel so the drawbar and air work ok. Is there a limit switch on the drawbar that is telling the atc that the tool is not unclamped? I would appreciate any thoughts before we call service.