Gregs Posted August 3, 2010 Share Posted August 3, 2010 Attached is a document instructing on how to route wires and connect the Power PMAC CPU cooling fan. Link to comment Share on other sites More sharing options...
bradp Posted September 6, 2012 Share Posted September 6, 2012 Could you supply the voltage input specifications for the CPU fan? In the above document you connect GND to +5V and Power to +15V. This means the fan is a 10V fan or a 12V fan? Link to comment Share on other sites More sharing options...
JeffLowe Posted September 7, 2012 Share Posted September 7, 2012 [quote='bradp' pid='3904' dateline='1346915850'] Could you supply the voltage input specifications for the CPU fan? In the above document you connect GND to +5V and Power to +15V. This means the fan is a 10V fan or a 12V fan? [/quote] I checked one of ours. The fan is a 12V Sunon, and it's a whiny little thing. My guess is that with the available power, running it 2 volts under was preferable to running it 3 volts over the rated voltage. Link to comment Share on other sites More sharing options...
curtwilson Posted September 7, 2012 Share Posted September 7, 2012 Jeff - Your surmise is correct that we are running a 12V fan off of a 10V net supply because that is what is available. There is not good availability of 15V fans, and running a 12V fan at 15V could lead to early failure. Link to comment Share on other sites More sharing options...
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