[rescue] Sun StorEdge D2 PS pinout
sawbona at gmx.net
sawbona at gmx.net
Fri Jun 5 08:38:21 CDT 2020
I'm in the process repurposing a power supply from a scrapped Sun Microsystems
D2 array which was working perfectly well when decomissioned.
It is a Japanese made 360W FDK PEX737-40, +5V/30A and +12V/23A.
Impressively well built hardware and in mint condition.
The plug at the back of the canister has 24 pins just like the usual male
(?) used for ATX MBs but with a different pinout and without some of the usual
which makes sense as it is not a for a motherboard.
Of the 24 pins, 19 are 18AWG and 5 are 24AWG.
With the unit plugged in and the rear switch 'on', I get these readings:
18AWG-red -> 0.00V to GND
24AWG-red -> 3.0mV to GND
18AWG-orange -> 0.00V to GND
18AWG-yellow -> 0.00V to GND
24AWG-green -> 0.00V to GND
24AWG-grey -> 0.00V to GND
24AWG-blue -> + 5.08V to GND
24AWG-brown -> + 3.0mV to GND
This would make(?) the blue cable PS_ON and the green cable GND.
Although there's no continuity between the green cable and GND, the unit
latches on when I
The five 18AWG +5V cables are on the same rail as they show 0.1 ohms between
same for the three 18AWG +12V cables.
The remaining red cable shows 10.2 ohms to the other +5V cables.
The yellow +12V cable shows 3.80k ohms with respect to the other +12V cables
probably destined to one of the two redundant fans the array had.
With the unit plugged in, the rear switch 'on' and green+blue shorted, the
unit latches on and
I get these readings:
18AWG-red -> + 5.11V to GND
24AWG-red -> + 5.10V to GND
18AWG-orange -> +12.29V to GND
18AWG-yellow -> +12.01V to GND
24AWG-green -> + 5.07V to GND
24AWG-grey -> + 5.06V to GND
24AWG-blue -> + 5.10V to GND
24AWG-brown -> + 5.10V to GND
So my guess is that the blue cable is PS_ON, the gray cable is PWR_OK and the
cable GND (?).
What I would need to know is this:
What would be the proper wiring/use of the brown cable?
Is it a sense cable like every other ATX PS?
Do I need to put in a dummy load (10 ohm/5w sandbar resistor) to insure
I'd be grateful for any input on this.
Thanks in advance.
More information about the rescue