This message was posted by Body Cover on AmayaUsers.com. PLEASE DO NOT REPLY VIA EMAIL. Instead, respond to the thread on the WEBSITE by clicking here: http://www.amayausers.com/boards/ultimatebb.php?/topic/2/903/2.html#000019 Mary, someone else, like one of the techs, can probably answer this better, but when it says its blocked I beleive it refers to the sensor is sending a signal saying the tooth of the comb is blocking the signal. on my old amaya there is a square "C" shaped sensor "C" meaning it is a square block with a slot on its side, then there is a long bar with little teeth on it that attaches to the needle bar that slides through this slot, I belive it is probably an infra red sensor like a remote control, it has a light at the top and a sensor at the bottom, and when the teeth of this comb shaped br slide through the slot th light is blocked from the sensor for a brief moment and that's how the machine can "count" where it is at on the needles when doing a color change. it is important to use canned air to blow out that sensor because lint can build up and block the light telling the machine that the needles aren't moving and stop the action of the needles changing color. sometimes when it is between two needles and sometimes not. but if the sensor says blocked and it is between the two needles then I would try to clean the sensor it it should just magically begin to work again, as for where to find it, look in the manual for the color change sensor diagram, because that can be very difficult to describe! Hopefully I haven't confused you to much, and hope that the info is correct, it is mostly my best guess assumption. Ron =========================================================== The AmayaUsers Mailing List Website: http://www.amayausers.com Discussion Board: http://www.amayausers.com/boards Subscribe/Unsubscribe: http://www.amayausers.com/list ===========================================================