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

^{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

-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

-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:

Too many devices are set instantly. (e.g. for HDDs try to use 'Motor-Start Jumpers')
There are too many large-capacity devices installed.
The nominal operating current of the devices installed collectively exceeds the available current of the power supply.

Connectors P11, P12, and P13

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

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

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