EMC vnx5100更换备用电源步骤？

用户备用电源损坏，需要更换电源，请教一下步骤如何进行。
以下是错误信息：
:
Severity : Error
System : FCN00131600055
Domain : Local
Created : Jan 21, 2018 8:52:52 AM
Message : DPE (Bus 0 Enclosure 0) is faulted.
Full Description : Disk Processor Enclosure (Bus 0 Enclosure 0) is faulted. Servers may have lost access to disk drives in this storage system.
Recommended Action : Contact your service provider.
Event Code : 0x7409
:
Severity : Error
System : FCN00131600055
Domain : Local
Created : Jan 21, 2018 8:52:52 AM
Message : SPS (Bus 0 Enclosure 0 SPS A) is faulted.
Full Description : Standby Power Supply (Bus 0 Enclosure 0 SPS A) is faulted.
Recommended Action : Verify that power cables and the communications (serial) cable are connected properly between the storage system and the SPS. If the SPS has completed charging its battery and the problem still persists, contact your service provider.
Event Code : 0x7404