NEC Express5800/T120h User Manual page 70

Chapter 2 Preparations
3. Following the steps below, detach the processor from the heat sink.
①
Locate the release slot between the processor and heat sink.
Release slot is located on the opposite side of the pin 1 mark.
②
Insert a 1/4-inch wide flat-blade screwdriver into the release slot (❶).
Check that the flat-blade screwdriver is between the heat sink and the processor frame.
③
Rotate the screwdriver gently to lift the processor frame from the heat sink(❷)
④
Disconnect all the latches on the processor frame corner.
⑤
Remove the processor frame from the heat sink.
4. Remove thermal grease adherent to the processor with washing. After the washing becomes totally dry,
apply new thermal grease.
5. Remove the dust cover of the high-performance heat sink.
6. Align the pin mark 1 on the processor frame with the pin mark 1 on the high performance heat sink, gently
press the four corners of the processor frame from the top securing the heat sink latch on the high
performance heat sink and attach. Confirm that the heat sink latches at the four corners of processor frame
are fixed to the heat sink.
Heat sink latch
70
Note Do not touch the point of contact of the processor.
Pin 1 mark on heat sink
Express5800/T120h User's Guide
1. Installing Internal Optional Devices
Heat sink latch
Pin 1 mark on the frame