Power Supply Test Switch Procedure
Before you replace a power supply, use this procedure to determine if the power
supply needs replacing.
1. Perform steps 1 through 6 in “Power Supplies and Power Supply Fan
Assemblies” on page 7-21.
2. Connect a power cord to the power supply and plug the power cord into a suit-
able power outlet.
If the green LED on rear of the power supply does not blink, the power
supply is defective. Move the external fans from the defective unit to the
new unit per step 7 in “Power Supplies and Power Supply Fan Assemblies”
on page 7-21, then replace the power supply.
If the LED is blinking then the auxiliary (standby) section of the power supply
is good.
Power Supply Test Switch
Power Supply Fans
3. Using a pencil or other nonmetalic object, press the "test switch" that is located
on the side of the power supply. This is a momentary contact switch, so you
must keep the switch pressed during the entire test period of at least 30
seconds. As soon as the switch is released the self-test will stop.
If the INTERNAL fans inside the Power Supply do not spin (you should be
able to hear and/or feel them spin up) and the green LED is not on solid,
replace the power supply and move the external fans from the defective unit
7-24
RS/6000 Enterprise Server Model H Series Installation and Service Guide
Содержание H Series
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