The illustrations in this document might differ slightly from your hardware.
Removing and replacing Tier 1 CRUs
This topic provides information about removing and replacing tier 1 CRUs.
Replacement of Tier 1 CRUs is your responsibility. If a Lenovo approved warranty service provider 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 compute book cover
This information provides instructions on how to remove the compute book cover.
The compute book has a cover on the left side and a cover on the right side for access to the microprocessor
and DIMMs. Use the same procedure to remove both covers.
To access the microprocessor and DIMMs 1 through 12, remove the left cover.
To access DIMMs 13 through 24, remove the right cover.
To remove the compute book covers, complete the following steps:
Step 1. Before you begin, read “Safety” on page v and “Installation guidelines” on page 44 .
Step 2. Turn off the server (see “Turning off the server” on page 40) and all attached peripheral devices.
Disconnect all power cords; then, disconnect all external cables as necessary to replace the
device.
Step 3. Remove the compute book from the server. Pull the top fan-pack handle down and slide the blue
release latch (behind the fan handle) to the right to release the compute book cam handle.
Step 4. Rotate the cam handle all the way down and slide the compute book out of the server.
Step 5. Lay the compute book on its side, and press down on both blue touch points and slide the cover
toward the rear of the compute book.
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System x3850 X6 and x3950 X6 Installation and Service Guide
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