Removing the SAN Volume Controller 2145-4F2 system board

During routine maintenance, you might be required to remove and replace the system board.

1. 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 servicing one or more VDisks, because the host applications will lose access to their data. See MAP 5350: Powering off a SAN Volume Controller node for more information.
2. Remove the node from the rack and place it on a flat, static-protective surface. See Removing the SAN Volume Controller from a rack.
   
3. Remove the top cover from the SAN Volume Controller ( in Figure 1).
   Figure 1. SAN Volume Controller 2145-4F2 system board

   

   If you are going to exchange the system board for another system board, go to step 4. Otherwise, go to step 6.

4. Remove the adapter assemblies; however, keep the adapter assemblies––they must be installed onto the replacement system board.
5. Remove the memory modules; however, keep the memory modules––they must be installed onto the replacement system board.
6. Disconnect the following:
   • All fan connectors
   • Power connectors P1 and P2
   • SCSI power connector
   • ATA connector
   • Disk drive connectors
   • Service Controller connector
7. Lift out the air baffle.
8. Unscrew the heat sink captive screws ( in Figure 1).
9. Move the heat sinks gently from side to side to break the seal formed by the thermal compound and then pull them off the processors.
10. Remove the screws from each of the heat sink retainer brackets ( in Figure 1).
11. Remove the retainer brackets.
12. Remove the two screws from each of the three connectors.
13. Remove the seven screws ( in Figure 1).
14. Remove the system board.

    At this time, if you have any tasks to do while the system board is removed, do them.