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: Battery or possibly battery backplane requires replacing..
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: