1. Installing Internal Optional Devices
Express5800/R120h-1M User’s Guide
68
Chapter 2 Preparations
9.
Install the processor heatsink assembly:
①
Locate the Pin 1 indicator on the processor carrier and the socket.
②
Align the processor heatsink assembly with the heatsink alignment pins and gently lower it down until
it sits evenly on the socket. The heatsink alignment pins are keyed. The processor heatsink assembly
will only install one way.
③
Using a T-30 hexalobular screwdriver, fully tighten each heatsink nut until it no longer turns.
Note
Be sure to tighten each heatsink nut fully in the order indicated. Otherwise, boot
failure or intermittent shutdowns might occur.
10. Make sure that the heat sink is installed on a level with the motherboard.
Note
If the heat sink is not level, remove it, and then install it again.The following
probably causes the heat sink not to be level:
– The CPU is not positioned correctly.
– All screws are not completely tightened.
Do not move the secured heat sink.
