Chapter 4
Removing and Replacing Components
I/O Baseboard Assembly
71
Step 2. With the I/O board flush against the midplane riser board socket, push down firmly on the locking
lever until the I/O baseboard plugs all the way into the midplane riser board socket and the locking
lever clicks into place on the chassis wall. See Figure 4-20 on page 69.
Step 3. Replace the three chassis fan units.
Step 4. Plug in all external cabling to the rear ports of the I/O baseboard.
CAUTION When re-plugging the SCSI cables, note the labeling on the SCSI A and SCSI B
channel cables. You must match each cable with its appropriate socket on the SCSI
HBA. If the cables are mismatched your system may not reboot. Both cables and
sockets are clearly marked with the correct channel.
Step 5. Plug in the internal SCSI cable(s) to the HBA board in PCI slot 1.
Step 6. Replace the top cover.
Step 7. Replace the front bezel.
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