Lenovo 3057 Maintenance Manual page 174

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 186.
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 83.
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.
2. If the server is installed in a rack cabinet, remove the server from the rack cabinet and place it on a flat,
clean, and static-protective surface. See the Rack Installation Instructions that comes with the server.
3. Remove the server cover. See "Removing the server cover" on page 85.
4. Locate the backplane. See "Components of server models with 12 3.5-inch hard disk drive bays"
on page 33.
5. Remove all the installed 3.5-inch hot-swap hard disk drives and dummy trays (if any) from the hard disk
drive bays. See "Installing or replacing a hot-swap hard disk drive" on page 150.
6. Record the cable connections on the backplane and then disconnect all cables from the backplane.
7. Carefully lift the backplane straight up a little bit so that the small hooks
with the corresponding holes in the backplane. Then, slowly and carefully move the backplane to the
rear of the chassis until the hooks
remove the backplane out of the chassis.
Figure 120. Removing the backplane for server models with 12 3.5-inch hard disk drive bays
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ThinkServer RD430 Hardware Maintenance Manual
1 pass through the holes in the backplane and then completely
1
on the chassis are aligned