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Changing the IBM Power supply fan for the Digikey fan

Sid Boyce
 

Hi David,

The pinout for the existing power supply fan differs from what I see online.

pin 1 -- Black -- GND

pin 2 -- White -- ?

pin 3 -- Blue -- ?

pin 4 -- Red   -- +12V

Which of the 2 wires are Sensor and Control.

The Digikey fans recommended have Red -- +12V, Black -- GND, Yellow --
Sensor and Brown -- Control.

How to connect the new fan to the old fan's plug?

73 ... Sid.




David

David Fainitski
 

Hello,  Sid
Only one way will work properly,  so try. 
You have only two different ways. 

On Wed, Oct 9, 2019, 6:16 AM Sid Boyce <boyce.sid@...> wrote:
Hi David,

The pinout for the existing power supply fan differs from what I see online.

pin 1 -- Black -- GND

pin 2 -- White -- ?

pin 3 -- Blue -- ?

pin 4 -- Red   -- +12V

Which of the 2 wires are Sensor and Control.

The Digikey fans recommended have Red -- +12V, Black -- GND, Yellow --
Sensor and Brown -- Control.

How to connect the new fan to the old fan's plug?

73 ... Sid.




David

Sid Boyce
 

Thanks David,
I'll do that. Thinking about it later, as long as those 2 wires are not connected to +12V, only one way the fan will work.
73 ... Sid.

On 09/10/2019 16:46, David Fainitski wrote:
Hello,  Sid
Only one way will work properly,  so try.Â
You have only two different ways.Â

On Wed, Oct 9, 2019, 6:16 AM Sid Boyce <boyce.sid@... <mailto:boyce.sid@...>> wrote:

Hi David,

The pinout for the existing power supply fan differs from what I
see online.

pin 1 -- Black -- GND

pin 2 -- White -- ?

pin 3 -- Blue -- ?

pin 4 -- Red   -- +12V

Which of the 2 wires are Sensor and Control.

The Digikey fans recommended have Red -- +12V, Black -- GND,
Yellow --
Sensor and Brown -- Control.

How to connect the new fan to the old fan's plug?

73 ... Sid.




David
--
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks