Lenovo System x3300 M4 Installation And Service Manual page 254

Removing a 3.5-inch disk drive backplane
Use this information to remove a 3.5-inch disk drive backplane.
To remove the 3.5-inch disk drive backplane, complete the following steps:
Step 1. Read the safety information that begins in "Safety" on page v and "Installation guidelines" on
page 163.
Step 2. Turn off the server (see "Turning off the server" on page 24) and all attached peripheral devices.
Disconnect all power cords; then, disconnect all external cables as necessary to replace the device.
Step 3. Disconnect all external cables and power cords.
Step 4. Open the bezel from the release point on the left edge of the bezel, and rotate the left side of the
bezel away from the server.
Step 5. Carefully turn the server on its side so that it is lying flat, with the cover facing up.
Attention: Do not allow the server to fall over.
Step 6. Remove the left-side cover (see "Removing the left-side cover" on page 187).
Step 7. Remove the 3.5-inch hot-swap hard disk drives (see "Installing a 3.5-inch hot-swap hard disk
drive" on page 52).
Step 8. Remove the air baffle (see "Removing the air baffle" on page 189).
Step 9. Remove the fan assembly (see "Removing the fan assembly" on page 39).
Step 10. Note where the power, signal, and configuration cables are connected to the 3.5-inch hard disk
drive backplane; then, disconnect them (see "Internal Cable Routing and Connectors" on page 166).
Step 11. Lift up the retention latches that hold the backplane in place; then, grasp the top edge of the
backplane and rotate it toward the rear of the server. When the backplane is clear of the drive-cage
retention tabs, remove it out from the server.
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System x3300 M4 Installation and Service Guide