Table 4. Light path diagnostics panel LEDs (continued)
v Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v See “Parts listing” 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.
LED Description Action
PS Power supply 1 or 2 has failed.
When both the PS and CNFG
LEDs are lit, the power supply
configuration is invalid.
1. Check the power-supply that has an lit amber LED (see
“Power-supply LEDs” on page 29).
2. Make sure that the power supplies are seated correctly.
3. Remove one of the power supplies to isolate the failed
power supply.
4. Make sure that both power supplies installed in the
server are of the same type.
5. Replace the failed power supply.
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 caused the error.
2. Check the system-error log for information about the
error.
3. If you cannot isolate the failing adapter by using the
LEDs and the information in the system-error log, remove
one adapter at a time from the failing PCI bus; and restart
the server after each adapter is removed.
4. Replace the following components, in the order shown,
restarting the server each time:
v PCI riser card
v (Trained service technician only) Replace the system
board.
5. For more information, go to http://www.ibm.com/
support/entry/portal/docdisplay?lndocid=SERV-CALL.
SP A service processor error has
been detected.
1. Shut down the system and remove the power cords from
the server; then, reconnect the server to power and restart
the server.
2. Update the IMM firmware.
3. (Trained service technician only) Replace the system
board, if the problem remains.
4. For more information, go to http://www.ibm.com/
support/entry/portal/docdisplay?lndocid=SERV-CALL.
FAN A fan has failed, is operating too
slowly, or has been removed. The
TEMP LED might also be lit.
1. Reseat the failing fan, which is indicated by a lit LED
near the fan connector on the system board.
2. Replace the failing fan, which is indicated by a lit LED
near the fan connector on the system board.
Note: If an LED near an unused fan connector on the
system board is lit, a PCI riser-card assembly might be
absent. Replace the PCI riser-card assembly. One PCI
riser-card assembly must always be present in PCI
connector 2.
Chapter 1. The IBM System x3550 M3 server 23
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