As previously reported, during the recovery after the blackout we found out that closing the als flip mirror in the LL atrium caused the unlock of the injection. This morning we continued investigating on this issue.

To summarize what have been tested:

• Unplugging the control cable of the flip mirror after the relay box  -> INJ doesn't unlock
• Switching off  the green light inside the CEB box -> INJ unlocks
• Swapping the power cable from one box to a different one   -> INJ unlocks
• Opening the box, unscrew the flip mirror and hold it out of the box -> INJ still unlocks
   

This, it seems that there is a problem with the flip mirror mirror. For the time being, it has been unplugged to be checked in electronics lab and will be replaced as soon as possible.

ALS subsystem relocked without issues.