Chassis - Sun Microsystems StorEdge T3+ Installation And Configuration Manual

Note – After replacing the controller card, you might need to upgrade the controller
firmware and EPROM firmware to make sure you are running the same firmware
versions that you had on the previous controller card. To upgrade the controller
firmware, see "Controller Firmware Version 2.1 Upgrade" on page 97.

Chassis

The array chassis rarely needs to be replaced. However, the chassis part number is
available to replace the centerplane and chassis if necessary. (These must be replaced
together, because they are factory aligned.)
Problems with the centerplane would most likely occur due to an electrical short or
a bent or broken pin connector. These problems would first appear as a failure of
another FRU component, such as an interconnect failure or drive failure. If replacing
the FRU that appears to be failed does not correct the problem, then examine the
centerplane connector that the FRU connects to for bent or broken pins. If nothing is
obvious, install another spare FRU to verify that it is not a failed FRU component
causing the problem. If you have eliminated all possibility of a FRU component
failure and the problem still remains, it is likely to be a centerplane failure.
If there is a centerplane failure, contact your Sun Service representative. Only
trained, qualified service providers should replace an array chassis and centerplane.
Chapter 14 Servicing the Array 179