IBM x3250 M3 Problem Determination And Service Manual page 92

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 4, "Parts listing, System x3250 M3 Types 4251, 4252, and 4261," on page 119 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.
Component LED Description
Microprocessor error Microprocessor has failed, is
LED missing, or has been incorrectly
installed.
Note: (Trained service technician
only) Make sure that the
microprocessor is installed correctly;
see "Installing the microprocessor"
on page 186.
System-board error System-board CPU VRD and/or
LED power voltage regulators have
failed.
Battery failure LED Battery low.
IMM heartbeat LED Indicates the status of the boot
process of the IMM.
When the server is connected to
power this LED flashes quickly to
indicate that the IMM code is
loading. When the loading is
complete, the LED stops flashing
briefly and then flashes slowly to
indicate that the IMM if fully
operational and you can press the
power-control button to start the
server.
PCI slots error LEDs An error has occurred on a PCI bus
or on the system board. An
additional LED is lit next to a failing
PCI slot.
H8 heartbeat LED power-on and power-off sequencing. 1. If the LED flashes at 1Hz, it is functioning properly
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IBM System x3250 M3 Types 4251, 4252, and 4261: Problem Determination and Service Guide
Action
1. Check the system-event log to determine the
reason for the lit LED.
2. (Trained service technician) Reseat the failing
microprocessor
3. Replace the following components one at a time,
in the order shown, restarting the server each time:
a. (Trained service technician only) Failing
microprocessor
b. (Trained service technician only) System board
(Trained service technician only) Replace the system
board.
1. Replace the CMOS lithium battery, if necessary.
2. (Trained service technician only) Replace the
system board.
If the LED does not begin flashing within 30 seconds
of when the server is connected to power, complete
the following steps:
1. (Trained service technician only) Recover the
firmware (see "Recovering the server firmware" on
page 113).
2. (Trained service technician only) Replace the
system board.
1. Check the system-event log for information about
the error.
2. If you cannot isolate the failing adapter through the
LEDs and the information in the system-event log,
remove one adapter at a time, and restart the
server after each adapter is removed.
3. If the failure remains, go to http://www.ibm.com/
systems/support/supportsite.wss/
docdisplay?brandind=5000008&lndocid=SERV-
CALL for additional troubleshooting information.
and no action is necessary.
2. If the LED is not flashing, (trained service
technician only) replace the system board.