v Check the power supplies, see Power-supply LEDs.
v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See Chapter 3, “Parts listing, Type 8864,” on page 23 to determine which components are customer
replaceable units (CRU) and which components are field replaceable units (FRU).
v If an action step is preceded by “(Trained service technician only)”, that step must be performed only by a
trained service technician.
Lit light path
diagnostics LED with
the system-error or
system-information
LED also lit Description Action
MEM Memory failure.
Note: The error LED on the
memory card is also lit.
1. Remove the memory card with the lit error LED on
the top of the card; then, press the light path
button on the memory card to identify the failed
card or DIMM.
2. Reseat the DIMM.
3. Replace the following components one at a time,
in the order shown, restarting the server and
re-enabling the memory each time:
a. Memory card
b. DIMM
c. (Trained service technician only)
Microprocessor tray
NMI A hardware error has been reported
to the operating system.
Note: The PCI or MEM LED might
also be lit.
1. See the BMC log and the system-error log (see
“Error logs” on page 70).
2. If the PCI LED is lit, follow the instructions for that
LED.
3. If the MEM LED is lit, follow the instructions for
that LED.
4. Restart the server.
PCI A PCI adapter has failed.
Note: The error LED next to the
failing adapter on the PCI board is
also lit.
1. See the BMC log or the system-error log (see
“Error logs” on page 70).
2. Reseat the following components:
a. Failing adapter
b. I/O board
3.
Replace the components listed in step 2 one at a
time, in the order shown, restarting the server each
time.
SP There is a fault in the Remote
Supervisor Adapter II SlimLine.
1. Reseat the Remote Supervisor Adapter II SlimLine.
2. Update the firmware for the Remote Supervisor
Adapter II SlimLine (see “Updating the firmware”
on page 13).
3. Replace the Remote Supervisor Adapter II
SlimLine.
106 IBM System x3850 Type 8864: Problem Determination and Service Guide
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