Configure Ediabas to most async ab 625, open Tool32 and cicr.prg.
Then select job fs_lesen
and then from Tool32 top bar, select “play”.
This will make the “read error memory” job run on repeat.
If it can do it for 30-60 minutes, then the head is probably ok.
Obviously the ICOM emulator must be connected to the CIC.
When you make a flashing , you can confirm data communication in task managers.
And, ICOM B, green flashes on and off.