IBM SAN Volume Controller 2145-CG8 Hardware Maintenance Manual page 305

v Follow all standard safety and handling instructions. The components that you will be handling are
electrostatic-discharge sensitive.
Take precautions to avoid damage from static electricity. Wear an anti-static wrist strap and use a
static-protected mat or surface. For more information, see "Handling static-sensitive devices" on page
xx.
Notes:
v You must remove a number of components before you can remove and replace the system board. You
will reuse all the components that are removed with the new system board. Therefore, take care when
you remove and store these components.
v Each connector on the system board has its use printed next to it on the board.
To remove the system board, perform the following steps:
1. Read the safety precautions in "Safety and environmental notices" on page xiii.
2. Ensure that the node is turned off. If the node is an active member of a cluster, you must take care
not to turn off the only node that services one or more VDisks, because the host applications will
lose access to their data. See MAP 5350 in the IBM System Storage SAN Volume Controller
Troubleshooting Guide.
3. Remove the cable-retention bracket and disconnect the power cable from the node. See "Removing
the cable-retention bracket" on page 34.
4. Remove the node from the rack and place it on a flat, static-protective surface. See "Removing the
SAN Volume Controller from a rack" on page 46.
5. Remove the top cover. See "Removing the top cover" on page 77.
6. Remove the riser-card and Fibre Channel adapter. Place them on a static-protective surface for
reinstallation. You do not need to separate the riser-card and Fibre Channel adapter assembly. See
"Removing the Fibre Channel adapter assembly" on page 178.
7. Mark the cables to ensure that you know where each one goes. Figure 275 on page 276 shows the
connectors on the SAN Volume Controller 2145-8A4 system board.
Chapter 2. Removing and replacing parts
275