Power-Supply Leds - IBM System x3350 Type 4192 Problem Determination And Service Manual

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, System x3350 Type 4192 and 4193 server," on page 45 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
information LED also
lit Description
PCI An error has occurred on a PCI bus or
on the system board. An additional LED
will be lit next to a failing PCI slot.

Power-supply LEDs

The following minimum configuration is required for the DC LED on the power
supply to be lit:
v Power supply
v Power backplane
v Power cord
The following minimum configuration is required for the server to start:
v The microprocessor
v Two 512 MB DIMMs on the system board
v One power supply
v Power backplane
v Power cord
v Four cooling fans
The following illustration shows the locations of the power-supply LEDs.
Action
1. Check the LEDs at the PCI slots to identify the
component that is causing the error.
2. Make sure that the PCI riser card assemblies
are seated correctly.
3. Check the system event/error log for
information about the error. (Use the
Configuration/Setup Utility program to view the
error logs.)
4. If you cannot isolate the failing adapter through
the LEDs and the information in the system
event/error log, remove one adapter at a time
from the failing PCI bus, and restart the server
after each adapter is removed.
5. Replace the following components, in the order
shown, restarting the server each time:
v PCI riser card
v (Trained service technician only) System
board
Chapter 5. Diagnostics
AC power
LED
DC power
LED
151