Lenovo 7D8T, Maintenance Manual

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Figure 145. Connecting the serial port cable
Step 4. Proceed to install Riser 1 (see “Install the PCIe adapters and riser assemblies” on page 108 ).
After this task is completed
Proceed to complete the parts replacement (see “Complete the parts replacement” on page 174 ).
System board replacement (trained technician only)
Operation of this task must be done by trained technicians that are certified by Lenovo Service.
Remove the system board assembly
See this topic to learn how to remove the system board assembly. This procedure must be executed by a
trained technician.
About this task
Attention:
• Removing and installing this component requires trained technicians that are certified by Lenovo Service.
Do no attempt to remove or install it without proper training and qualification.
• 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.
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
Chapter 3
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Hardware replacement procedures
149