Problem
After restoring power to the Coudé after some work, the Coudé status showed "locked" in red on the MCS. Azimuth position was flashing yellow. GIS was reset and the Coudé interlock screen was clear.
Corrective Action
Using Remote Desktop, log in to Coude engineering virtual machine (10.3.1.13, user atst-devel) from the control network (any of the HLS machines should be able to access it). The engineering interface should already be open, otherwise open the "blue blocks" icon. The interlock status should be red and hovering over it will tell you the reason (in this case it was main power). Click the Acknowledge Interlock button on the left side of the engineering screen. This should clear the interlock and allow normal function.
More information
On the engineering interface both the azimuth position and cable wrap position were red. On MCS the Coudé Az position was flashing yellow.
There are certain positions where the hard stops will hit the side of the shock absorbers if the GIC goes down. For example: hard stops automatically deploy when the GIC is disabled, for instance during programming. so we try not to park at those locations. SeeCoudé Rotator Hard Stopsfor critical azimuth locations to avoid.