Removing the SAN Volume Controller 2145-CF8 CMOS battery

This topic describes how to remove the SAN Volume Controller 2145-CF8 CMOS battery.

DANGER

Multiple power cords. The product might be equipped with multiple power cords. To remove all hazardous voltages, disconnect all power cords.

CAUTION:

The battery contains lithium. To avoid possible explosion, do not burn or charge the battery.

Do not:

Throw or immerse into water
Heat to more than 100°C (212°F)
Repair or disassemble

Exchange only with the IBM-approved part. Recycle or discard the battery as instructed by local regulations. In the United States, IBM has a process for the collection of this battery. For information, call 1-800-426-4333. Have the IBM part number for the battery unit available when you call. (C003)

This service action requires you to remove the cover and:

Turn the node off.
Disconnect the power cables.
Optionally disconnect the fibre-channel and Ethernet data cables.

To remove the CMOS battery, perform the following steps:

Read the safety information to which Preparing to remove and replace parts refers.
Follow the procedure in MAP 5350: Powering off a SAN Volume Controller node to verify that the node data is mirrored and synchronized, and that there are no dependent virtual disks (VDisks) before turning off the node.
Slide the node out on its slide rails to the fully extended position.

You can perform 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.
When the node is completely turned off, remove the cable-retention brackets and disconnect the power cables, as described in Removing the cable-retention bracket.
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 the SAN Volume Controller from a rack.
Remove the top cover. See Removing the top cover.
Locate the battery 1 on the system board. Figure 1 shows the location of the battery.
Figure 1. Location of the SAN Volume Controller 2145-CF8 CMOS battery holder
Remove the CMOS battery, as shown in Figure 2:
Figure 2. SAN Volume Controller 2145-CF8 CMOS battery holder
1. Use a fingernail to press the top of the battery clip away from the battery. The battery pops up when released.
2. Use your thumb and index finger to lift the battery from the socket.
Recycle or discard the battery as instructed by local regulations.
See the warning at the beginning of this topic for further instructions regarding handling the battery.