Lenovo 70AL Maintenance Manual page 131

Before you begin, print all the related instructions or ensure that you can view the PDF version on another
computer for reference.
Notes:
• The hot-swap hard disk drive backplane is sensitive to ESD. Ensure that you read and understand
"Handling static-sensitive devices" on page 66 first and carefully perform the operation.
• Depending on the model, your server might look slightly different from the illustrations in this topic.
To replace the hot-swap hard disk drive 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. Remove the server cover. See "Removing the server cover" on page 67.
3. Remove the front bezel. See "Removing and reinstalling the front bezel" on page 69.
4. Locate the hot-swap hard disk drive backplanes. See "Hot-swap hard disk drive backplane" on page 31.
5. Remove the front system fan 1. See "Replacing the front system fan 1" on page 130.
6. Remove all the installed hot-swap hard disk drives and dummy trays (if any) from the hard disk drive
cage. See "Installing or replacing a hot-swap hard disk drive" on page 103.
7. Record the cable connections on the backplane, and then disconnect all the cables from the backplane.
8. Lift the release latch
Note: The following illustration shows the 3.5-inch hard disk drive cage. For the 2.5-inch hard disk
drive cage, the removal procedure is the same.
Figure 69. Removing the hard disk drive cage
1 and slide the hard disk drive cage out of the front of the chassis.
.
Chapter 6 Installing, removing, or replacing hardware
119