1108 Battery backplane cabling faulty or possible battery backplane requires replacing.
Explanation
Faulty cabling or a faulty backplane are preventing the system from full communication with and control of the batteries.
User response
Check the cabling to the battery backplane, making sure that all the connectors are properly mated.
Four signal
cables (EPOW, LPC, PWR_SENSE & LED) and one power cable (which
uses 12 red and 12 black heavy gauge wires) are involved:
- The EPOW cable runs to a 20-pin connector at the front of the
system planar, which is the edge nearest the drive bays, near the
left side.
To check that this connector is mated properly, it is necessary to remove the plastic airflow baffle, which lifts up.
A number of wires run from the same connector to the disk backplane located to the left of the battery backplane.
- The LPC cable runs to a small adapter that is plugged into the back of the system planar between two PCI Express adapter cages. It is helpful to remove the left adapter cage when checking that these connectors are mated properly.
- The PWR_SENSE cable runs to a 24-pin connector at the back of the system planar between the PSUs and the left adapter cage. Check the connections of both a female connector (to the system planar) and a male connector (to the connector from the top PSU). Again, it can be helpful to remove the left adapter cage to check the proper mating of the connectors.
- The power cable runs to the system planar between the PSUs and the left adapter cage. It is located just in front of the PWR_SENSE connector. This cable has both a female connector that connects to the system planar, and a male connector that mates with the connector from the top PSU. Due to the bulk of this cable, care must be taken to not disturb PWR_SENSE connections when dressing it away in the space between the PSUs and the left adapter cage.
- The LED cable runs to a small PCB on the front bezel. The only consequence of this cable not being mated correctly is that the LEDs do not work.
If no problems exist, replace the battery backplane as described in the service action for 1109.
You do not replace either battery at this time.
To verify that the battery backplane works after replacing it, check that the node error is fixed.
Possible Cause-FRUs or other:
- Battery backplane (50%)