Power Unit ReplacementChapter 6SYSTEM MAINTENANCE 175Power Unit ReplacementThis section describes the procedures for replacing power unit in the WLController.Power Unit Replacement for WL5100Power unit mounted in WL5100 is to be replaceable with one provided as anoption.Note. If the Controller has redundant power unit, it is available to replace the faultyone during operation, while the other is operating. If the Controller has no redundantpower unit, it is unavailable to replace one during operation.Note. It is available to check the status of Power Units by using show systemcommand. If system (redundant/single configurations) is working properly, OK isindicated in the part of message (PSU Status:). However, in single configuration, OK isalways indicated for the empty slot.The following describes the procedures for replacing the faulty power unit with anew one.WL111111#show system--Omitted--PSU Status: Left Power Supply DC OK AC OK Right Power Supply DC OK AC OK
