Apple powermac g3 blue.white Service Manual

 

 Troubleshooting

General/Power Supply Verification - 23

 

3. Start up the computer by pressing the power button on the 

front of the computer. 

 

Verify that the power cable is 

securely plugged into the front panel board.
If the computer starts up normally, the power supply is OK. If 

the power supply does not start up, go to the next step.

4. Check to see if the power supply fan is spinning.

If the power supply fan is not spinning, verify that the black 

and yellow fan cable from the power supply is plugged 

securely into the black and red fan cable connector; otherwise, 

go to the next step.

5. Connect the black lead of the volt meter to pin 16 of the power 

supply connector. Connect the red lead of the volt meter to pin 

1 of the power supply connector. The volt meter should 

measure approximately +3.3V.
If you do not get a reading of +3.3V, re-check the volt meter 

connections and measure the voltage again. If voltage is still