IBM XSERIES 255 TYPE 8685, Hardware Maintenance Manual And Troubleshooting Manual

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4. Pull out the hard disk drives (see “Installing a hot-swap hard disk drive” on page
73).
5. Disconnect the SCSI backplane cables from the system board (see
“System-board internal cable connectors” on page 43).
6. Move the shuttle back to allow easy access to the board.
Note: The illustrations in this document might differ slightly from your hardware.
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NM
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PS
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PS 4
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OV
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J2
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Thumb screw
SCSI backplane
7. Loosen the thumbscrew at the top of the SCSI backplane; then, lift the
backplane out of the server.
8. Remove the six screws in the SCSI backplane and put them in a safe place;
then, remove the backplane from the metal frame.
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 118 through 7
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 39.
v Read the safety notices at “Safety information” on page 167.
Chapter 5. Service replaceable units
119