NEC Express5800 Series User Manual page 340

8-28 System Upgrade
13.
Confirm that the heat sink is mounted horizontally to the motherboard.
IMPORTANT:
If the heat sink is not horizontally to the motherboard, dismount and remount it.
The heat sink cannot be mounted correctly if:
- the CPU is not mounted correctly
- the screws are not fully fastened.
Do not hold the fastened heat sink to move the CPU.
14.
Insert the cable and then install the cooling fan unit.
15.
Install the CPU/IO module referring to page 8-19.
16.
Connect the power cords.
17.
Press the POWER switch to power on the server.
18.
Verify that POST displays no error message.
If POST displays an error message, write it down and see the POST error message list on page
7-4.