Figure 65. Top cover removal
Step 1.  Use a screwdriver to turn the cover lock to the unlocked position as shown.
Step 2.  Press the release button on the cover latch and then fully open the cover latch.
Step 3.  Slide the top cover to the rear of the server until it is disengaged from the chassis. Then, lift the top 
cover off the chassis and place it on a flat clean surface. 
Attention: 
•  Handle the top cover carefully. Dropping the top cover with the cover latch open might damage 
the cover latch.
•  For proper cooling and airflow, install the top cover before you power on the server.
Install the top cover
Use this information to install the top cover.
“Read the  
installation 
Guidelines” on 
page 79
“Power off 
the server for 
this task” on 
page 11
“ATTENTION:  
Static Sensitive Device  
Ground package before opening” 
on page 82
Before installing the top cover: 
1.  Ensure that all cables, adapters, and other components are installed and seated correctly and that you 
have not left loose tools or parts inside the server. 
2.  Ensure that all internal cables are correctly connected and routed. See “Internal cable routing” on page 
27.
3.  If you are installing a new top cover, attach the service label to the new top cover first if necessary. 
Note: A new top cover comes without a service label attached. If you need a service label, order it 
together with the new top cover. The service label is free of charge.
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ThinkSystem SR635 Maintenance Manual