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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 7 in "Power Supplies and Power Supply Fan Assemblies"
on page 454.
2. Connect the power cord to the power supply and look at the front of the power
supply.
v If the LED on the front of the power supply is not blinking, the power supply is
v If the LED on the front of the power supply is blinking, go to the next step.
3. Use a pencil to press the test switch on the side of the power supply.
v If the LED on the front of the power supply is on steady and the internal fan
v If the LED on the front of the power supply is not on steady and the internal fan
defective. Continue with step 8 in "Power Supplies and Power Supply Fan
Assemblies" on page 454.
spins, the power supply is good and can be returned to the system.
does not spin, the power supply is defective. Continue with step 8 in "Power
Supplies and Power Supply Fan Assemblies" on page 454.
Chapter 9. Removal and Replacement Procedures
457
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