From the image of the IMT TRANS, the alignment of the pitch was quite bad, but the oplev values didn't jump.
I checked the PZT feed back signal one by one and finally K1:IMC-PZT2_PIT_OUTPUT jumped a lot.
After recovered this value, IMC can be locked.
Also, PRFPMI_RF_LOCKED state recovered.
I tried to find the reason of this jump, but I cannot find the reason from the Seismometer as shown in Fig.1.
Some investigation would be necessary.
