IBM x3550 - System - 7978, Problem Determination And Service Manual

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Removing and replacing Tier 1 CRUs
Replacement of Tier 1 CRUs is your responsibility. If IBM installs a Tier 1 CRU at
your request, you will be charged for the installation.
The illustrations in this document might differ slightly from your hardware.
Removing the cover
To remove the server cover, complete the following steps.
Thumbscrew
Fan door
1. Read the safety information that begins on page vii and “Installation guidelines”
on page 39.
2. Loosen the thumbscrew that secures the cover at the rear of the server.
3. Extend the server from the rack:
a. Press the two release latches at the front right and front left of the server.
b. Pull the server out until it stops.
4. Open the fan door. To open the fan door, slide the two latches to the right, and
raise the door panel.
5. Remove the server cover:
a. Slide the cover slightly toward the rear of the server until it comes free.
Make sure that the cover tabs all slide away from the insets that are on the
front, rear, and sides of the server.
b. Lift the cover off the server and set the cover aside.
Installing the cover
To install the server cover, complete the following steps:
1. Position the internal cables so that they do not interfere with the cover
installation.
Important: Before sliding the cover forward, make sure that all the tabs on both
the front, rear, and side of the cover engage the chassis correctly. If all the tabs
do not engage the chassis correctly, it will be very difficult to remove the cover
later.
2. Position the cover on top of the server and open the fan door.
3. Tighten the thumbscrew until the cover correctly engages all the inset tabs on
the server.
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IBM System x3550 Type 7978 and 1913: Problem Determination and Service Guide