Dear all,

Due to a probable issue at the SA1 Transmissive imager, the "OUT" and "YAG" position indication signals seems to be not responsive.

After the FXE team noticed that MODE S was interlocked, the root cause has been narrowed down to this component. Later, further investigation with A. Koch & J. Gruenert (XPD) has confirmed this fact. Apparently to recabling works performed during yesterday's ZZ may have something to do with this issue.

Once that the complete retraction of all the screen has been jointly confirmed via DOOCS and Karabo, the affected interlock condition (see attached picture) has been disabled for the rest of the week to allow normal operation of SA1 (release of MODE S and MODE M).

Further investigation and the eventual issue resolution is expected to happen on Tuesday next week via ZZ-access.

With best regards,

Raul [PRC@CW19]