Also 4 tech alerts on my LE:

43 - Center loop
47 - Right spinner
48 - Target 6
56 - Playfield opto

Is it the same list on yours ?

Numbers & names don't correspond:

43 is the first target of the right bank
47 is the lock 2 switch
48 is the lock 3 switch
56 is not used

Thus, I suppose that they reuse the code of another machine and forgot to update some things.

Annoying thing for me is that there is no EOS on the upper playfield flippers. When they are "up", if the ball arrives with a lot of speed (a return from a shot on a target for example), there is not enough power to maintain them up, the CPU doesn't know that the flipper began to fall due to the lack of EOS and I must release the button and press it again to be able to block the ball