JAC PZT HV was off -> Mark reset the interlock.

JAC heater chassis was off -> I switched it on at the rack.

JAC error signal was not crossing zero -> I updated the dark offset H1:JAC-REFL_A_RF43_I_OFFSET to a new number 2.4.

Beckhoff was reporting "invalid value" error for JAC PZT whitening -> Patrick did something to clear that.

Rahul restored slider numbers for JM1/3, IMC1/2/3, IM1/2/3/4 and PRM to Friday evening numbers as he reported in alog 90419.

JAC guardian didn't want to lock because H1:JAC-TRANS_A_DC_NORMALIZED kept getting below the threshold of 0.5. -> I temporarily changed it to 0.1.

JAC PZT voltage was drifting quickly for 30 minutes or so and JAC kept unlocking (probably because JAC was heating up) -> waited for a while.

JAC still didn't want to keep lock for a long time. -> I put it to DOWN state, followed the resonance manually using the PZT voltage for a minute or so, changed the state to LOCKED and the guardian liked that.

Jenne refined the JAC alignment using PZT and JM1. H1:JAC-TRANS_A_LF_OUT_DQ momentarily went up to 620 and the best number in the past month before today was like 580. It's trending down in the past two hours, now it's ~580 and that's still a very good number.

Temperature drift is still going on, the symptom is that the PZT voltage drifts down to -10 Volts and at that point JAC unlocks, but the guardian relocks to higher voltage fringe position right away, and the drift is slow enough it's bearable. Last lock lasted for an hour.

Now we can set H1:JAC-TRANS_A_DC_NORMALIZED back to 0.5 if we want to.