Jason, Nutsinee

Yesterday we replaced the RF driver with a spare hoping it would fix CO2Y power dropped issue (alog28506). CO2Y laser is now a Schrodinger's cat -- we won't know if the new RF driver fixes the problem until we get to lase the laser again after HAM6 work is done.

Procedure

First we shut off the chiller and TCSY power supply. Then we unplugged the power cable, BNC cables, cables from splitter box, and chiller hoses. Since none of the cables were labled, the cables from the splitter box weren't necessary plugged back in to where they used to be (all the output should be the same) but the BNCs cables were plugged back in the same way. Particulates were seen inside the chiller hoses and later got flushed into the system when we restarted the chiller.