It's a developer's board, so you should have some developer's tools. Like a multimeter. Check the power rails on the ATX connector. With the power connected to the PSU but turned "off", you should have +5 V on the "+5 V SB" pin and on the "PWR ON" pin. When you connect the "PWR ON" pin to ground with your front panel switch, the power supply should start up and provide all the other voltages (Main +5V, +/- 12V, 3.3V). The fan should have +12V on its red wire and 0V on the black, as described in the startup guide.
tony
