Artesyn Centellis 2000 Shelf Release 3.0 Installation and Use (May 2014) - Manual (Page 108)

FRU Installation
Centellis 2000 Shelf Release 3.0 Installation and Use (6806800L99G) 108
9. Check the PSU Status LED and take the appropriate actions as listed in the table
below.
10.Switch the external disconnect device to the ON position.
11.Verify that the green PSU LED is lit.
4.6 Replacing DC Power Entry Modules
This section provides the information needed to replace the power entry modules (PEMs).
PSU Status LED Status
LED (red) off Reason: The power is disconnected.
Action: Turn off the feed power and attach the power cables at the
power connector.
LED (red) on
LED (green) off Power supply is in a failed state.
LED (red) off
LED (green) on The power is connected correctly.