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11. Press the buttons 1 to put the latches on the chassis to the closed position so that the latches secure
the new backplane in place.
Figure 114. Securing the backplane for server models with eight 3.5-inch hard disk drive bays
12. Reinstall all the hot-swap hard disk drives and dummy trays (if any) in the hard disk drive bays. See
“Installing or replacing a hot-swap hard disk drive” on page 148.
13. Refer to your note to connect the cables to the new backplane.
14. If you are instructed to return the old hot-swap hard disk drive backplane, follow all packaging
instructions and use any packaging materials that are supplied to you for shipping.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the replacement, go to “Completing the parts replacement” on page 174.
Replacing the backplane for server models with 12 3.5-inch hard disk drive bays
Attention: Do not open your server or attempt any repair before reading and understanding “Safety information”
on page iii and “Guidelines” on page 81.
This topic provides instructions on how to replace the backplane for server models with 12 3.5-inch hard
disk drive bays.
Before you begin, print all the related instructions or ensure that you can view the PDF version on another
computer for reference.
Note: To clearly show the backplane, the system fans are omitted from the illustrations in this topic.
To replace the backplane for server models with 12 3.5-inch hard disk drive bays, do the following:
1. Remove all media from the drives and turn off all attached devices and the server. Then, disconnect all
power cords from electrical outlets and disconnect all cables that are connected to the server.
Chapter 6. Installing, removing, or replacing hardware 155