Dear Hicks,
Downloaded all the manuals about Netra, ALOM, etc. Very superficial, lightly touches on things. But still explained a few points like the DB9 serial port. That indeed was not intended to help with ALOM access. Just a regular serial port for after the OS boots, not a management port at all.
Now as I wrote I can start the leaf blower fan inside with just a "poweron" command. To start individual sub-components (FRUs), I tried " poweron {fru} " commands. For motherboard ı tried "poweron MB", "poweron MOTHERBOARD", and "poweron MB.SEEPROM", for SCSI disks I tried "poweron SCSI", "poweron ENC", "poweron ENC.SEEPROM", does not like these names, declares invalid. When I try "poweron PS1", or "removefru PS1", the SC does NOT declare these name are invalid but says they are NOT present!
Now this is fun indeed! ıf we have no Power Supplies present how the heck are we talking to you Mr. SC?
In summary I need to supply power to the DVD drive to boot anything. I looked inside the DVD bay, there indeed seems to be socket there intact. Since the HDD power light comes on and goes out, I think we just need the correct FRU name for the SCSI subsystem.