NEC Express5800/T120h User Manual page 152

Chapter 2 Preparations
When the power cord is connected, the AC power LED on the power unit will turn green.
5. Power on the server.
6. Confirm, by STATUS LED or on POST screen, that there are no errors related to the power supply units.
See Chapter 3 (1. IML Error Message) in Maintenance Guide for details on error.
If AC POWER LEDs are off, reinstall the power supply units. If the same error occurs, contact your sales
representative.
(2)
Power supply unit (DC)
Follow steps below to install a power supply unit:
To install the components, follow these steps.
1. See steps 1 to 6 in Chapter 2 (1.2 Overview of Installation and Removal) for preparations.
152
Power supply unit 2
AC POWER LED
Note The both two power supply units installed in the server must have the same
capacity. Make sure that the two power supply units have the same part number
and the same label color. If the two power supply units are inappropriate, the
system may become unstable to be shut down.
Note In order to prevent damage of the system due to improper cooling or elevated
temperature, please do not activate the server or enclosure without implementing
any of component or blank on all of drive bays and device bays.
Express5800/T120h User's Guide
1. Installing Internal Optional Devices
Power supply unit 1