switching on ibm pc 300gl psu?

[mynick]

How do you turn it on
it has no green or black-brown-blue-white wires
like regular at psu
with switch going to/from mentioned mains wires ? this one
has some different system(I do not think ac is going up the connector
to mbd to switch and back)

 

[Meat Plow]

On Wed, 26 Jan 2011 17:20:48 -0800, mynick wrote:

How do you turn it on
it has no green or black-brown-blue-white wires like regular at psu
with switch going to/from mentioned mains wires ? this one has some
different system(I do not think ac is going up the connector to mbd to
switch and back)

Black and green on the locking tab side of plug is power on 20 pin ATX
style supply. You're saying this does not exist? The 300gl being quite
obsolete might be hard to find technical errata on the PSU if
proprietary.



--
Live Fast, Die Young and Leave a Pretty Corpse

 

[baron]

Meat Plow Inscribed thus:

On Wed, 26 Jan 2011 17:20:48 -0800, mynick wrote:

How do you turn it on
it has no green or black-brown-blue-white wires like regular at psu
with switch going to/from mentioned mains wires ? this one has some
different system(I do not think ac is going up the connector to mbd
to switch and back)

Black and green on the locking tab side of plug is power on 20 pin ATX
style supply. You're saying this does not exist? The 300gl being quite
obsolete might be hard to find technical errata on the PSU if
proprietary.

If I remember correctly that machine PSU has a three pin connector with
two wires, one white, one gray, that need to be shorted together.
Should be about 4.5 volts between them OC.

--
Best Regards:
Baron.

 

[Franc Zabkar]

On Wed, 26 Jan 2011 17:20:48 -0800 (PST), mynick <anglomont@yahoo.com>
put finger to keyboard and composed:

How do you turn it on
it has no green or black-brown-blue-white wires
like regular at psu
with switch going to/from mentioned mains wires ? this one
has some different system(I do not think ac is going up the connector
to mbd to switch and back)

As Baron says, there will be one PS_ON wire that is pulled up to +5VSB
via a resistor. AFAICS, this means that when the PSU is in standby,
there will be two live wires -- one for +5VSB, and the other for
PS_ON. You should be able to determine the +5V, +12V, and Ground wires
by testing for continuity with the hard drive Molex connectors.

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.