IBM 8685 Hardware Maintenance Manual - Page 131

Hot-swap board, Disconnect all power cords and external cables from the back of the server.

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9. To replace the SCSI backplane, reverse the previous steps. Note: The two holes in the bottom of the SCSI backplane assembly fit over the two spindles on the floor of the chassis. Complete the following steps to install a second SCSI backplane: 1. Complete steps 1 on page 120 through 7 on page 120 2. Secure the SCSI backplane to the chassis, below the original SCSI backplane, using the six screws provided with the backplane. 3. Reinstall the SCSI backplane assembly in the chassis by sliding it into position, aligning the holes in the bottom of the backplane assembly with the two spindles on the floor of the chassis. 4. Return the shuttle to its correct position. 5. Reconnect the SCSI cable to the system board. Hot-swap board Complete the following steps to remove the hot-swap board. Note: v Read "Before you begin" on page 41. v Read the safety notices at "Safety information" on page 169. v Read "Handling electrostatic discharge-sensitive devices" on page 172. 1. Turn off the server. 2. Disconnect all power cords and external cables from the back of the server. 3. Remove the server cover (see "Removing the top cover (all models)" on page 51). 4. Remove all adapters and spacers, placing the adapters on a static-protective surface (see "Installing an adapter" on page 55). 5. Disconnect the hot-swap board cable from the system board (see "System-board internal cable connectors" on page 45). Note: The illustrations in this document might differ slightly from your hardware. Release tabs Chapter 5. Service replaceable units 121

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9.
To replace the SCSI backplane, reverse the previous steps.
Note:
The two holes in the bottom of the SCSI backplane assembly fit over the
two spindles on the floor of the chassis.
Complete the following steps to install a second SCSI backplane:
1.
Complete steps 1 on page 120 through 7 on page 120
2.
Secure the SCSI backplane to the chassis, below the original SCSI backplane,
using the six screws provided with the backplane.
3.
Reinstall the SCSI backplane assembly in the chassis by sliding it into position,
aligning the holes in the bottom of the backplane assembly with the two
spindles on the floor of the chassis.
4.
Return the shuttle to its correct position.
5.
Reconnect the SCSI cable to the system board.
Hot-swap board
Complete the following steps to remove the hot-swap board.
Note:
v
Read “Before you begin” on page 41.
v
Read the safety notices at “Safety information” on page 169.
v
Read “Handling electrostatic discharge-sensitive devices” on page 172.
1.
Turn off the server.
2.
Disconnect all power cords and external cables from the back of the server.
3.
Remove the server cover (see “Removing the top cover (all models)” on
page 51).
4.
Remove all adapters and spacers, placing the adapters on a static-protective
surface (see “Installing an adapter” on page 55).
5.
Disconnect the hot-swap board cable from the system board (see
“System-board internal cable connectors” on page 45).
Note:
The illustrations in this document might differ slightly from your hardware.
Release tabs
Chapter 5. Service replaceable units
121