Replacing the rear backplane – Lenovo ThinkServer RD550 User Manual
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4. Locate the rear backplane/cage kit. See “Server components” on page 25.
5. Remove the installed 2.5-inch hot-swap hard disk drives and dummy trays (if any) from the rear
backplane/cage kit. See “Installing or replacing a hot-swap hard disk drive” on page 119.
6. Disconnect the cables from the rear backplane.
7. Loosen the screws and slide the rear backplane/cage kit to the front of the server to disengage it from
the chassis. Then, lift the kit from the system board.
Figure 65. Removing the rear backplane/cage kit
8. If you are instructed to return the old rear backplane/cage kit, 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 removal procedure, go to “Completing the parts replacement” on page 144.
Replacing the rear backplane
Attention: Do not open your server or attempt any repair before reading and understanding “Safety information”
on page iii and “Guidelines” on page 61.
Before you begin, print all the related instructions or ensure that you can view the PDF version on another
computer for reference.
To replace the rear backplane, 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. Prepare your server. See “Removing or extending the server from the rack cabinet” on page 63.
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