Removing the CMOS battery: 2145-SV1

You might have to remove the main board CMOS battery from a SAN Volume Controller 2145-SV1 node.

Before you begin

DANGER

Multiple power cords. The product might be equipped with multiple AC power cords or multiple DC power cables. To remove all hazardous voltages, disconnect all power cords and power cables. (L003)

1. Follow any special handling and installation instructions that come with the replacement battery.
2. Read the safety information that is described in Preparing to remove and replace parts.
3. Follow the procedure in MAP 5350: Powering off a node to verify that hosts will not lose access to data in volumes before you power off the node.
4. Slide the node out on its slide rails to the fully extended position.

   You can accomplish most service actions when the node is fully extended from the rack on its slide rails. You can leave the Fibre Channel and Ethernet cables connected, if you are using the cable-management arm and if you are not removing the node from the rack. If the location of the node in the rack is too high or too low to work comfortably, you can remove the node from the rack.

5. When the node is turned off, disconnect the power cables.
6. Optional: If you must remove the node from the rack to work on it, perform the following procedure to remove all cables and remove the node from the rack:
   1. To make sure that you can replace all cables in the same ports from which they were removed, label the port position of each Fibre Channel and Ethernet cable; then remove all cables from the back of the node.
   2. Remove the node from the rack and place it on a flat, static-protective surface. See Removing a node from a rack: 2145-SV1.
7. Remove the top back cover, as described in Removing the top covers: 2145-SV1.
8. Remove the PCI express riser assembly 1, as described in Removing the PCI express riser-card assembly: 2145-SV1.
9. Locate the battery on the main board, as shown in Figure 1.

   

   •  1  SATA cable connector 1
   •  2  CMOS battery in the battery holder on the main board
   •  3  SATA cable connector 2

10. Disconnect the SATA cables from the SATA cable connectors 1 and 2. Make sure that you will be able to put the SATA cables back in the same order after the battery is replaced.
11. Remove the battery.
    1. Pull the battery holder catch  4  away from the battery in the direction (a) shown in Figure 2.
    2. Use your thumb and index finger to lift the battery from the holder  5  in the direction (b) shown in Figure 2.

       

       •  1  CMOS battery in the battery holder on the main board
       •  2  SATA cable connector 1
       •  3  SATA cable connector 2
       •  4  Battery catch
       •  5  Battery holder
12. Recycle or discard the battery as instructed by local regulations.

    Ensure that you follow the directions for handling the battery, as described in the Caution notice.