def unmount(segment, puck, sample, force=False):
    """
    """
    print "unmount: ", segment, puck, sample, force
    
    #Initial checks
    assertValidAddress(segment, puck, sample)
    assert_puck_detected(segment, puck)
    
    robot.assert_no_task()
    robot.reset_motion()
    robot.wait_ready()
    robot.assert_cleared()
    #robot.assert_in_known_point()
    hexiposi.assert_homed()

    if smart_magnet.check_mounted(idle_time=0.25, timeout = 1.0) == False:
        raise Exception("No pin detected on gonio")
    

    #Enabling
    enable_motion()

    set_hexiposi(segment)

    if not force:        
        visual_check_hexiposi(segment)

    #location = robot.get_current_point()

    if not robot.is_gonio():
        robot.move_gonio()
            
    smart_magnet.set_unmount_current()
    try:
        robot.get_gonio()
        robot.move_dewar()        
        robot.put_dewar(segment, puck, sample)
    finally:
        smart_magnet.set_default_current()