Lenovo 70AL, Maintenance Manual, Page: 122 / 190

1. Do one of the following:
• If you are installing a hot-swap redundant power supply, locate the bay for the power supply in the
rear of your server. Press the small tab on the metal shield in the direction as shown and pull the tab
at the same time to remove the shield out of the chassis. Store the shield in case you later remove
the power supply and need the shield to cover the bay.
Figure 62. 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.
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ThinkServer TS440 Hardware Maintenance Manual