Fig.1. showed the time series of the ASC P DOFs.
DOF4 P saturated, that issue was already known.
Around the -23 m, IMC can be locked, but the TEM 10 mode in IMC trans(divided in pitch direction)
I touched the offset of the PZT1 and PZT2 in pitch, it recovered.
2nd IMC locked loss happened a few seconds after the providing stable light, but this was the conflict with the XARM guardian.
After turned off the XARM guardian, IMC can be locked with long time.
Anyway, we need the offload of the DOF4 in some days.
2nd locked failed (around -44.5 m), DOF5 P kicked and TEM10 IMC lock detected.
During the TEM10 IMC lock, IO guardian didn't go to the 1000(providing stable light) ASC didn't start in case of TEM10 IMC lock.
This afternoon, I entered PSL and offloaded manually IP1 PZT PIT and YAW, which are used as DOF4 PIT and YAW controls. After that, IMC seems to be stable without any satuaration.