Fujitsu IRF-1S series User Manual page 150

Chapter 6 - Maintenance
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Replacing a Power Supply
Remove the replacement power supply from the shipping container and
inspect for obvious damage. Save the packaging material.
Install the new power supply by sliding it into its open bay and ensuring it
seats completely and the release latch resets.
Turn the On/Off switch to the "On" position on the replacement power
supply.
NOTE:
The front bezel Power Supply Status LED will return to a normal
state (steady green).
Using the packaging material from the replacement power supply, repackage
and return the failed power supply per your RMA instructions.