Lenovo 3057 Maintenance Manual page 147

• If you are installing a hot-swap redundant power supply, locate the bay for the power supply in the
rear of your server. Insert a finger into the hole in the metal shield that protects the bay, press the tab
1
in the direction as shown, and then pull the shield out of the chassis. Store the shield in the event
that you later remove the power supply and need the shield to cover the bay.
Figure 85. Removing the protective shield for the power supply bay
• If you are replacing a hot-swap redundant power supply, locate the failing power supply in the rear of
your server and then disconnect the power cord from the failing hot-swap redundant power supply.
Note: On each hot-swap redundant power supply, there is a status LED near the power cord
connector. When the LED is lit in green, it indicates that the hot-swap redundant power supply is
working correctly. When the LED is lit in amber, it indicates that the hot-swap redundant power
supply is likely to fail or has failed. If your server comes with an Intelligent Diagnostics Module
Premium, you also can view the LEDs on the panel of the module to locate the failing power supply.
See "Diagnostic module" on page 23.
.
Chapter 6 Installing, removing, or replacing hardware
133