Dell PowerEdge R540 EMC Installation and Service Manual - Page 151
Removing a power supply unit
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Figure 115. Installing a power supply unit blank Next steps Follow the procedure listed in After working inside your system on page 67. Removing a power supply unit The procedure for removing AC and DC PSUs is identical. Prerequisites CAUTION: The system needs one power supply unit (PSU) for normal operation. On power-redundant systems, remove and replace only one PSU at a time in a system that is powered on. 1. Follow the safety guidelines listed in Safety instructions on page 66. 2. Disconnect the power cable from the power source and from the PSU you intend to remove, and then remove the cable from the strap on the PSU handle. 3. Unlatch and lift the optional cable management arm if it interferes with the PSU removal. For information about the cable management arm, see the system's rack documentation at www.dell.com/poweredgemanuals. Steps Press the release latch and slide the PSU out of the system by using the PSU handle. Figure 116. Removing a power supply unit Installing and removing system components 151