General > General Technical Chat
Server PSU PEX 737-30 How to turn it on ?
MetraCollector:
Hello, I would like to ask - anyone know how to activate this server PSU ? It si FDK Corp. PEX 737-30 supposed to be used in Sun Systems, but there is no documentation available.
I read something about other PSUs that is need to be shorted some wires, but it seems to be like "original per type".
Is there a need to add dummy load for 5V section if I want to use 12V section ?
Any tips ?
Thank you very much.
Regards Ondrej
mariush:
Put the board on some cardboard or several sheets of paper to insulate it, plug it in.
Get a multimeter, put the black probe on a black wire (should always be ground), then probe the rest of the output pins.
IMHO even if the connector is not standard, it should still be relatively identical to atx.
Red should be 5v - you see the caps in the back rated for 10v so it makes sense.
Orange in atx standard is 3.3v but this power supply doesn't have 3.3v, only 12v.. so those are 12v
You can see those four wires (green, brown, blue and red) going to a separate connector on the sides... I'd bet the red cable is a 5v standby, the green being the power good wire and the brown and blue... no clue.
Measure the brown and blue wires, see if they have any voltage on them.
I would try shorting the green to a ground wire and if that doesn't start spinning fans, I'd try shorting the green and brown (if it doesn't have any voltage on it)
MetraCollector:
There is 5V between blue one and GND. Green is connected to GND.
Brown and thin red are at 0V, but there is resistance between them and GND.
DenzilPenberthy:
Hi,
Did you figure out in the end how to get this thing working? I've got four of these and I'd like to get them working. Perhaps you have some valuable experience which will avoid me destroying one by experimenting? :)
Cheers.
PedroDaGr8:
--- Quote from: mariush on January 12, 2013, 04:46:15 pm ---
I would try shorting the green to a ground wire and if that doesn't start spinning fans, I'd try shorting the green and brown (if it doesn't have any voltage on it)
--- End quote ---
This is likely what I would try as well. On ATX the standard is to short green (PIN 13 IIRC, which looks similar to here) to black to turn it on.
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