Per the WP12246:

Visual inspections were performed in the LVEA to track the wires and verify the picomotor controllers existence, connections and spares (physically only). The information gattered was updated in the document E1200072. Important findings were found and the document is pretty much near to the real installation. Electrical part investigations will follow to determine the spares. The names of the rack as well as the physical location for the controllers were verified using the O5 ISC wiring diagram D1900511.

Marc, Fernando