Log on 2021.8.5

[R.Takahashi, N.Sato]

F1's No.1 sensor is showing "seated" (see photo 1).
    * Appears to have occurred approximately 15 days ago (see photo 2)
    * Checked with a multimeter, the sensor is open, indicating "not seated".
    * We confirmed that the sensor cable was not grounded.
    * The separately measured transfer function shows no anomalies so far.
    * No abnormalities were found on the digital system side from the EXI/O chassis.
    * We could not find the cause of the problem.