[MindWalker]

A bit of progress...

First of all, sorry I mixed the photos of rear/front; the machine with the card cage is the one with 'silicon graphics octane' on front panel.

The PSU without the handle is a Cherokee. I took it apart and removed one long screw that was loose inside. Other than a little dusty, it looked just fine.

I powered the left machine with a serial cable attached (hard drives disconnected). The red light on the front panel came up (and all of the green diag leds on the front panel bottom-right corner), and I got the service menu over the serial. However it didn't accept any input and after a reset I got only un-ending string of dots, then nothing. Also the machine won't turn off from the front panel button at all, so I have to unplug it from the wall. Also now it keeps turning on as soon as it's plugged in (it didn't do it on the first boot) and the red light on the front does not illuminate. Three green diag leds (top one on the left column of four leds and the bottom two on the right column of three leds) light up, but there is no activity. I took out the PSU, main board and re-seated the RAMs etc. but to no avail. Bummer.

I then powered the right machine (admittedly I forgot the check the PSU, but I *believe* they are both Cherokee as they looked identical), and it booted into the service menu right away, and I was able to get into the prompt and I run 'hinv' which gave me specs of IP30, 2x 300 Mhz R12000 and 768MB RAM. The front panel lights work (even both of the incandescent bulbs) and the power button turns it off as it should.

I opened the card cage and the boards are QLogic SCSI controller (SGI p/n 9980983) and indeed a Sonic board (with break-out cables labeled SCSI and SERIAL). For now I left the boards in but detached the break-out cable.

So; one machine worked for a minute but is now dead, one appears to be working.