d. Remove the cable from the node.
To replace the USB service-controller cable, perform the following procedure:
a. To reinstall the cable, carefully thread the USB cable through disk-drive bay 5, routing the larger
connector of the cable to the USB connector (1 in Figure 80 on page 80) on the USB riser card.
Route the cable beneath any red SAS cables that are attached to the disk backplane.
b. Align the USB service-controller cable (1 in Figure 81) with the connector on the USB riser-card
assembly (3) and push it into the connector until it is firmly seated.
c. Slide the blue lockbar (2) toward the USB service-controller cable to the locked position until it
is seated firmly.
d. Install the other end of the USB cable in the USB connector (2 in Figure 79 on page 79) on the
rear of the service controller.
e. Carefully install the service controller, as described in “Replacing the SAN Volume Controller
2145-CF8 service controller” on page 85.
Important: Ensure that the USB cable is pushed back into the empty drive bay, and ensure that
the cable is not trapped above or below the bay.
9. After replacing the cable and the service controller, perform the procedure to replace the top cover, as
described in “Replacing the top cover” on page 72.
After performing the procedure, the node is reinstalled in the rack with the power on.
Removing the SAN Volume Controller 2145-8A4 service controller
To remove the service controller, perform the following steps:
1. Turn off the node while ensuring that its data is mirrored and synchronized. See MAP 5350 in the
IBM System Storage SAN Volume Controller 2145 Troubleshooting Guide for more information.
3
1
2
Figure 81. USB service-controller cable connector on the USB riser card
Chapter 2. Removing and replacing parts 81
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