Apple Xserve (Early 2008) DIY Procedure for Enclosure - Manual (Page 85)

Xserve (Late 2006/Early 2008) Power Distribution Board Replacement Instructions 3
Removing the Installed Power Distribution Board
Note: Before removing the power distribution board, you must remove the following:
All Apple drive modules •
Both power supplies •
Power distribution board cable •
Airflow duct •
Fan array •
Drive interconnect backplane •
Apple Drive Modules
Press the handle on the front of the drive module so that the handle pops out. Then grasp 1.
the drive handle, and pull the drive module out of the Xserve.
Repeat for all other installed drive modules. 2.
Power Supplies
Pull the handle to release the first power supply and slide it out of the bay. 1.
Repeat for the second power supply, if installed. 2.
Pull the handle to unlatch the
power supply and remove it.