Replacing the SAN Volume Controller 2145-4F2 system board

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

The system board field-replaceable unit (FRU) is a kit that includes the following parts:

PCI riser card
Two microprocessors
Microprocessor voltage regulator module (VRM)
Planar

Notes:

Use all the parts in the system board FRU kit (system board, processors [2], VRM, riser card). If you removed the system board and are replacing it, reuse only the four memory modules and the two adapter assemblies that you removed. See Removing the SAN Volume Controller 2145-4F2 system board.
Before you install the new system board, check whether the old system board has any jumpers installed. If it has, install matching jumpers onto the new system board.
Before you install the processors on the system board, remove the dust covers from the processor socket.
If you were not sent here from the directed maintenance procedures, rewrite the SAN Volume Controller 2145-4F2 serial number. If you were sent here from directed maintenance procedures, this step is performed from within the procedure.
The system board is 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.
To force-restore the system board flash memory, you must run the node rescue procedure after all external cables are reconnected to the node and the node is first turned on.

Perform the following steps to replace the system board:

Replace the seven screws shown in Figure 1.
Replace the two screws from each of the three connectors.
Replace the retainer brackets.
Replace the screws from each of the heat sink retainer brackets shown in Figure 1.
Screw in the heat sink captive screws .
Return the air baffle to its place.
Connect the following:
- All fan connectors
- Power connectors P1 and P2
- SCSI power connector
- ATA connector
- Disk drive connectors
- Service controller connector
Replace the memory modules onto the replacement system board.
Replace the adapter assemblies onto the replacement system board.
Replace the top cover of the node.
Figure 1. SAN Volume Controller 2145-4F2 system board
- Top cover
- Screws
- Heat sink retainer brackets
- Heat sink captive screws
Place the node in the rack. See Replacing the SAN Volume Controller in a rack.
Carefully install the end of the ribbon cable (marked System Planar) to the system board, being sure to install the cable straight in, as shown in Figure 2. Be sure to verify that the blue line on the cable connector end is not visible.
Figure 2. Installing the service controller cable into the SAN Volume Controller 2145-4F2 system board
Turn on the node.
If you are performing this repair as part of a directed maintenance procedure, you will be prompted to type the machine serial number. Otherwise, perform the following steps:
1. Delete the failed node from the cluster.
2. Add the repaired node to the cluster.
3. Start the command-line interface (CLI). See Accessing the SAN Volume Controller CLI.
4. Issue the following command:
  svctask writesernum -sernum nodeserialnumber nodename
  
  where nodeserialnumber is the serial number on the node frame and nodename is the name of the repaired node that you added in this step.
  For example, to write the machine serial number to the system board when the serial number is "13-FEDCB" and the node name is "ZYXW3," you would issue the following command:
```
svctask writesernum –sernum 13FEDCB ZYXW3
```
  Note: The node will restart as soon as the serial number has been written to it.