Return to MAIN-Index  Return to SUB-Index    IBM-AUSTRIA - PC-HW-Support    30 Aug 1999

Primary Power Supply Voltages - PS/2 - Server 85, Model 95 and 3511



Power Supply Voltages PS/2 - Server 85, Model 95 and 3511

Some power supplies have a built-in test switch and LED on the side of the power supply (there is no need to check voltages). On those power supplies, disconnect the power supply from the system board, and remove all cables except the power cord.
Power-on the power supply and push the test button. If the LED lights up, and the power supply fan runs, the power supply is OK.


On all other power supplies, short pin 1 to pin 2 and read the voltages on the other pins. If the voltages are correct, and the power supply fan runs, the power supply is OK.

Primary Power Supply Voltages

If the voltages are correct and the power supply fan runs, the power supply is OK.

 

-Lead Pin +Lead Pin Vdc Minimum Vdc Maximum
5
5
5
B
B
3
4
7
D
A
+3.7
+9.0
-9.0
+3.7
+9.0
+ 6.2
+15.0
-15.0
+ 6.2
+15.0


Drive Connector Voltages

-Lead Pin +Lead Pin Vdc Minimum Vdc Maximum
B
B
D
A
+ 3.7
+ 9.0
+ 6.2
+15.0


If the power supply shuts down, or appears  to fail at power-on, you might have one of the following problems:


Connectors P11, P12, and P13
 

-Lead Pin +Lead Pin Vdc Minimum Vdc Maximum
2 1 +11.5 +12.6


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