QUESTION:

Does the ASi-monitor switch off if the CPU starts up with CP343-2 ?

ANSWER:

The ASi-monitor does not switch off if the CPU starts up with CP343-2 which means switching from STOP to RUN.
Either, from RUN to STOP the monitor does not switch off.

If, however, the CPU control voltage is turned off, also CP343-2 is out of supply voltage.
Then the monitor switches off due to ASi-master failure.