R. Short, J. Kissel

After Marc and Fernando replaced the ISC-R4 power supply this afternoon, the IMC couldn't lock and appeared poorly aligned. We checked that the MC and IMC PZT sliders/OSEM values hadn't changed, so I tried moving the PZTs to realign the cavity. Around that time we realized that the IMC had not been taken offline before the rack was taken down, so the IMC WFS had just been trying to follow noise. I then cleared the history on the WFS filter banks and brought the PZT sliders back, and the IMC was able to lock successfully.