Removing the SAN Volume Controller 2145-8A4 system board

You must remove the system board if you are instructed to replace the SAN Volume Controller 2145-8A4 system board field-replaceable unit (FRU).

You must remove and replace the microprocessor when you replace the system board. Also, ensure that you have alcohol wipes and thermal grease available to correctly perform this task.

Before you proceed with the system board removal, ensure that you do the following:
  • Identify and label all the cables that are attached to the SAN Volume Controller 2145-8A4 node so they can be replaced in the same port.
  • Have a static-protected surface available to hold the components that you remove from the old system board.
  • 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.
Notes:
  • 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.
  • 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.
  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: Powering off a SAN Volume Controller node.
  3. Remove the cable-retention bracket and disconnect the power cable from the node. See Removing the cable-retention bracket.
  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.
  5. Remove the top cover. See Removing the top cover.
  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.
  7. Mark the cables to ensure that you know where each one goes. Figure 1 shows the connectors on the SAN Volume Controller 2145-8A4 system board.
    Figure 1. Connectors that are used on the SAN Volume Controller 2145-8A4 system board
    This figure shows the connectors that are used on the SAN Volume Controller 2145-8A4 system board
    • reference key one PCI express riser card connector
    • reference key two SATA 2 connector
    • reference key three SATA 0 connector
    • reference key four Power connector P1
    • reference key five Front USB connector
    • reference key six Operator-information panel connector
    • reference key seven Power connector P6
    • reference key eight Fan 5 connector
    • reference key nine Fan 4 connector
    • reference key ten Microprocessor connector
    • reference key eleven Fan 3 connector
    • reference key twelve Fan 2 connector
    • reference key thirteen Fan 1 connector
    • reference key fourteen IDE connector
  8. Disconnect and remove both SATA disk cables from sockets SATA 0 and SATA from the system board, as shown in Figure 2.
    Figure 2. SAN Volume Controller 2145-8A4 SATA cable connectorsThis figure shows where the two SAN Volume Controller 2145-8A4 SATA cables are connected to the system board
  9. Remove power connectors P1 reference key one and P6 reference key two, as shown in Figure 3.
    Figure 3. SAN Volume Controller 2145-8A4 power supply connectorsThis figure shows the P2 and P3 power cable connectors at the rear of the SAN Volume Controller 2145-8A4 power supply
  10. Remove the cables from the Front USB and the Front panel sockets.
  11. Remove the cable from the IDE connector, which is identified in Figure 4.
    Figure 4. The IDE connector on the SAN Volume Controller 2145-8A4 system board
    This figure shows the location of the IDE connector on the SAN Volume Controller 2145-8A4 system board
  12. Remove the five fan connectors along the front edge of the system board. Figure 5 shows three of the fan connectors.
    Figure 5. Connectors for the SAN Volume Controller 2145-8A4 heat exchange fansThis figure shows the connectors for the SAN Volume Controller 2145-8A4 heat exchange fans
  13. Remove the four memory modules and place them on a static-protective surface for reinstallation. See Removing the memory modules (DIMM).
  14. Remove the heat-sink air baffle and the heat sink. Clean the thermal grease from the microprocessor before you remove it. You can also clean the heat sink now.
  15. Remove the microprocessor. See Removing the microprocessor.
  16. Notice the orientation of the microprocessor retention module and then remove the four screws (reference key one in Figure 6) that hold the microprocessor retention module to the system board. Then, lift the retention module out of the server.
    Figure 6. SAN Volume Controller 2145-8A4 system board and microprocessor retention module
    This figure shows the location of the screws that secure the SAN Volume Controller 2145-8A4 system board and microprocessor retention module
  17. Remove the remaining eight screws (reference key two in Figure 6) that secure the system board to the chassis. Put the screws in a safe place.
  18. Lift the system board out of the server.
Parent topic: Removing the SAN Volume Controller system board
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