Lenovo 7D8T, Maintenance Manual

Page: 90 / 218

Table 21. Cable routing for the power backplane and the intrusion switch
From To
1
Intrusion switch cable Intrusion switch Intrusion switch connector
2
Power backplane sideband cable Power backplane Power backplane sideband connector
After this task is completed
Proceed to complete the parts replacement (see “Complete the parts replacement” on page 174 ).
Heat sink Torx T30 nut replacement
See these topics to learn how to remove and install a heat sink Torx T30 nut.
Remove a heat sink Torx T30 nut
See this topic to learn how to remove a PEEK (Polyether ether ketone) Torx T30 nut on the heat sink.
About this task
Attention:
• Go over “Installation Guidelines” on page 41 to ensure that you work with safety.
• Turn off the server and peripheral devices and disconnect the power cords and all external cables (see
“Power off the server” on page 13 ).
• If the server is installed in a rack, slide the server out on its rack slide rails to gain access to the top cover,
or remove the server from the rack.
• Do not touch the processor contacts. Contaminants on the processor contacts, such as oil from your skin,
can cause connection failures.
Note:
The heat sink, processor, and processor carrier for the system might be different from those shown in
the illustrations.
Watch the procedure.
A video of this procedure is available from the following link:
•
https://www.youtube.com/playlist?list=PLYV5R7hVcs-DV_Ja2E7l6T-lwN_IrnJRk
Procedure
Step 1. Make preparations for this task.
1. If applicable, remove the security bezel (see “Remove the security bezel” on page 137 ).
2. Remove the top covers (see “Remove the top covers” on page 168 ).
3. Remove the air baffle (see “Remove the air baffle” on page 43 ).
4. Remove both PCIe riser assemblies (see “Remove the PCIe riser assemblies and adapters” on
page 100 ).
Step 2. Remove the Torx T30 nut.
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ThinkEdge SE450 Maintenance Manual