Replacing the CMOS battery: 2145-SV1

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Perform the following procedure if you need to replace the main board CMOS battery on a 2145-SV1 control enclosure.

Before you begin

DANGER
Multiple power cords: The product is equipped with multiple power cords. To remove all hazardous voltages, disconnect all power cords. (L003)
Safety icons for multiple power cords

About this task

This service action assumes that the following tasks were completed:

Procedure

  1. Follow any special handling and installation instructions that come with the replacement battery.
  2. Locate the battery on the main board ( 2 ), as shown in Figure 1.
    Figure 1. Location of the 2145-SV1 CMOS battery holder
    CMOS battery location
    •  1  SATA cable connector 1
    •  2  CMOS battery in the battery holder on the main board
    •  3  SATA cable connector 2
  3. Insert the new battery:
    1. Pull the battery holder catch  4  in the direction (a) shown in Figure 2.
    2. Insert the battery into the holder  5  in the direction (b) shown in Figure 2. The + mark on the battery must face towards the front of the node.
      Figure 2. Replacing the 2145-SV1 CMOS battery
      Replace the CMOS battery
      •  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
    3. Release the battery holder catch  4 .
  4. Reconnect the SATA cables to the appropriate SATA cable connectors on the main board,  1  and  3 , as shown in Figure 1.

    For example, SATA cable 1 must be connected to SATA cable connector 1 on the SATA drive backplane. SATA cable connector 1 is closest to the battery backplane. For details, see Replacing the SATA drive backplane and cables: 2145-SV1.

  5. Replace PCI express riser assembly 1, as described in Replacing a PCI express riser-card assembly: 2145-SV1.
  6. Replace the top back cover, as described in Replacing the top covers: 2145-SV1.
  7. If you removed the node from the rack, replace the node in the rack. See Replacing a node in a rack: 2145-SV1.
  8. If you removed any Fibre Channel or Ethernet cables, use the labels you that placed on each cable to identify the ports from which they were removed.
  9. Turn on the node by reconnecting both power cables.