IBM Storwize V7000, Problem Determination Manual

Page: 63 / 314

Table 15. LED indicators, corresponding problem causes, and corrective actions (continued)
LED Problem Action
MEM When only the MEM LED is lit, a
memory error has occurred.
When both the MEM and CNFG LEDs
are lit, the memory configuration is
invalid or the PCI Option ROM is out
of resource
Note: Each time you install or remove a DIMM, you must
disconnect the server from the power source; then, wait 10
seconds before restarting the server.
1. If the MEM LED and the CNFG LED are lit, complete the
following steps:
a. Check the system-event log in the Setup utility. If a PCI
Option ROM out-of-resource error log is present,
reduce the base system ROM or change the ROM order.
b.
Run the DSA memory test to isolate the problem.
If the test reports that a memory error has occurred,
replace the failing DIMM, which is indicated by the
lit DIMM latch on the system board (the DIMM
LED is underneath the DIMM latch).
If the test reports the memory configuration is
invalid, repopulate the DIMMs to a supported
configuration. (See “Installing a memory module”
on page 130 about memory configuration.)
2. If the CNFG LED is not lit, the system might detect a
memory error. Complete the following steps to correct the
problem:
v
The server did not boot and a failing DIMM LED is lit.
a. Reseat the DIMM.
b. Run the memory test to isolate the problem.
c. If the test indicates that a memory error has occurred
(check the system log), replace the failing DIMM,
which is indicated by the lit DIMM latch on the
system board (the DIMM LED is underneath the
DIMM latch).
NMI A non-maskable interrupt has occurred,
or the NMI button has been pressed. Check the system-event log for information about the error.
OVER
SPEC The server was shut down because of a
power-supply overload condition on
one of the power channels. The power
supplies are using more power than
their maximum rating.
1. If any of the power channel error LEDs (A, B, C, D, E, or
AUX) on the system board are lit also, refer to the section
on “Power problems” in the appropriate server guide in
“Troubleshooting the System x3650” in the
IBM Storwize
V7000 Unified Information Center . (For the location of power
channel error LEDs, see the section on “Internal
connectors, LEDs, and jumpers”.)
2. Check the power-supply LEDs for an error indication (AC
LED and DC LED are not both lit, or the information LED
is lit). Replace a failing power supply.
3. Remove optional devices from the server.
PCI An error has occurred on a PCI bus or
on the system board. An additional
LED is lit next to a failing PCI slot. 1. Check the LEDs on the PCI slots to identify the component
that is causing the error.
2. Check the system-event log for information about the error.
3.
If you cannot isolate the failing adapter through the LEDs
and the information in the system-event log, remove one
adapter at a time from the failing PCI bus, and restart the
server after each adapter is removed.
4.
If the failure remains, call your next level of support.
Chapter 3. Getting started troubleshooting
39