Top Cover; Removing The Top Cover; Installing The Top Cover - Silicon Graphics 1450 Maintenance Manual

Top Cover

Removing the Top Cover

Installing the Top Cover

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Follow the instructions in this section to remove and install the top cover.
To reach components inside the system, remove the top cover. Facing the front of the
system, the top cover is on top and towards the back of the rack-mounted chassis. See
Figure 1-1 on page 3 for the location of the top cover. The following tasks require removal
of the top cover:
• Accessing baseboard components including but not limited to non-hot-plug PCI
add-in boards, extension boards, memory slots, Voltage Regulator Modules
(VRMs), and processors
• Exchanging individual fans
• Removing and installing the fan board assembly
• Removing and installing the power subsystem bay
To remove the top cover, perform the following steps.
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Release the two thumbscrews located on the top rear of the chassis. One of two
thumbscrews are noted by "A" in Figure 1-3 on page 5.
3. Using an even pull, press lightly on the top cover and slide it back until it stops.
4. Lift the entire cover upward and away from the chassis.
To install the top cover, follow these steps:
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Before replacing the top cover, check that no left loose tools or parts were left inside
the system.
3. Check that cables, add-in boards, and other components are properly installed.
Top Cover
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