IMC_LOCK guardian thinks that the IMC is never locked even when it momentarily locks because IMC-MC2_TRANS_NSUM_OUTPUT is smaller than threshold.
I noticed that the MC2_TRANS_NSUM_OUT_DQ stayed negative all the time when the IMC was flashing (mismatched_whitening2.png).
I checked the whitening of the segments and somehow stage 1 whitening was on but the anti-whitening was off (mismatched_whitening.png).
I pressed "OFF" and then "ON" for stage 1 on the MEDM screen to make the whitening/awhitening in sync again. I made the stage 1 whitening OFF after this.
I haven't checked when the problem started but most likely at the time of power outage.
I'll ask the operator to check if there are other mismatches.
Kieta's great attention to detail noticed a whitening filter bank that did not have a matching anti-whitening filter.
So Ryan C. and my self populated a Spreadsheet that has all the LSC Whitening Sensors on it with their filterbank's whitening status.
It shows which Whitening filters are on, which Anti-Whitening filters are on. And if they don't match for what ever reason they turn red.