Replacing Failed Redundant Power Supply Unit - NEC Express5800/T120d User Manual

Chapter 2 Preparations

1.16.1 Replacing failed redundant power supply unit

Replace the power supply unit only when redundant power supply unit fails.
(1) Replacement of power supply module
1. Identify the failing power supply module on which AC POWER LED is lit amber or flashing amber.
2. Disconnect power cord from the failing power supply module you have identified in Step 1.
3. Push the lever of power supply module toward inside, and pull the module toward you while holding the
handle.
4. Install the new power supply module. Make sure that no error is indicated on STATUS LED or POST
screen.If any error messages are displayed, refer to Chapter 3 (1. POST Error Message) in "Maintenance
Guide".If AC POWER LED is not lit, re-install the power supply unit. If the same error occurs, contact your
sales representative.Be sure to install the module for replacement.
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Be sure to observe the following precautions to use the server safely. Failure to
observe the precautions may cause burns, injury, and property damage. For
details, refer to Safety precautions in Precautions for Use.
• Pay attention to electric hazard.
• Do not remove the power supply module that is working normally.
Important
• Do not use the server with failed power supply module removed. Power
supply module must be removed only when it is replaced.
Tips
If the system is running with two power supply units, thefailed power supply
module can be replaced with the system power on.
Important
The failed power supply module must be replaced. The system cannot run
with a single power supply module.
Express5800/T120d User's Guide
1. Installing Internal Optional Devices
CAUTION