NEC Express 5800/320Lb - Manual (Page 269)

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Removing CPU
Follow the steps below to remove the CPU. Except when you replace the CPU with a new one,
power off the server.
IMPORTANT:
Do not remove the CPU unless it is faulty.
If a CPU is not mounted on CPU#2, cover it with an anti-dust sheet.
After operation, the cool sheet at the bottom of the heat sink may stick to the CPU because of
heat. When you dismount the heat sink, turn it lightly to make sure that the heat sink is not
sticking to the CPU. Otherwise, the CPU or socket may be damaged.
80. Shut down the OS.
Press the POWER switch to turn off the server.
81. Unplug the power cord.
82. Remove the CPU module.
83. Detach the CPU air duct.
84. Dismount the heat sink using the dismount tool included with the additional CPU.
85. Remove the CPU.
86. Affix an anti-dust sheet on the CPU socket.
Place the adhesive part on the opposite side of the lever. Any part of the sheet place off the
socket.
87. Install the CPU module.
88. Connect the power cable.
89. Press the POWER switch to power on the module.
90. Verify that POST displays no error messages.
If POST displays an error message, take a note on the massage and see the POST error
messages listed in Chapter 7.