Introduction
My newest Personal Iris 4D/35 doesn't
work because it has a broken mainboard, but it also has something
very special: One of the previous owners installed a standard
450W ATX power supply instead of the original power supply. And
the best is: After I changed the E-Board, the machine works!
Pin Layout
The original SGI power supply has the following pin layout:
| Signal |
Colour |
Pin No |
| +5V |
white |
1,4,7,10,13 |
| GND |
green |
3,6,9,12,15 |
| +12V |
orange |
2 |
| -12 |
brown |
5 |
| SENSE+ |
red |
|
| SENSE- |
black |
|
| PFD |
blue |
|
SENSE+, SENSE- are used to control the voltage, while PFD is
for power failures. You can simply ignore these, as ATX power
supplies have their own voltage regulator.
|