Lenovo 7D7Q, Maintenance Manual

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2. Complete the parts replacement. See “Complete the parts replacement” on page 140 .
Memory module replacement
Use the following information to remove and install a memory module.
Remove a memory module
Use this information to remove a memory module.
About this task
Attention:
• Read the following section(s) to ensure that you work safely.
– “Safety” on page iii
– “Installation Guidelines” on page 51
• Power off the server and peripheral devices and disconnect the power cords and all external cables. See
“Power off the server” on page 11 .
• If the server is installed in a rack, remove the server from the rack.
• Memory modules are sensitive to static discharge and require special handling. In addition to referring to
the standard guidelines for “Handling static-sensitive devices” on page 53 :
– Always wear an electrostatic-discharge strap when removing or installing memory modules.
Electrostatic-discharge gloves can also be used.
– Never hold two or more memory modules together so that they touch. Do not stack memory modules
directly on top of each other during storage.
– Never touch the gold memory module connector contacts or allow these contacts to touch the outside
of the memory-module connector housing.
– Handle memory modules with care: never bend, twist, or drop a memory module.
– Do not use any metal tools (such as jigs or clamps) to handle the memory modules, because the rigid
metals may damage the memory modules.
– Do not insert memory modules while holding packages or passive components, which can cause
package cracks or detachment of passive components by the high insertion force.
Watch the procedure
A video of this procedure is available at YouTube:
https://www.youtube.com/playlist?list=PLYV5R7hVcs-
BPZOAqQMD37KjuxaVHVBkH .
Procedure
Step 1. Prepare the server:
a. Remove the top cover. See “Remove the top cover” on page 132 .
b. Remove the air baffle when removing the memory module from slot 4. This provides more
space for the removal. See “Remove the air baffle” on page 63 .
Step 2. Locate the memory module slot. Determine which memory module you want to remove from the
server.
Chapter 4
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Hardware replacement procedures
89