IBM 72332MU Installation Guide - Page 84

Lit light path, diagnostics LED

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v Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved. v See the parts listing in the Problem Determination and Service Guide 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 LED also lit Description Action All LEDs are off (only the power LED is lit or flashing). No action necessary. All LEDs are off (the power LED is lit or flashing and the system-error LED is lit). A machine check has occurred. The 1. Wait several minutes for the server to identify the server is identifying the machine machine check and the server will restart. check, the server was interrupted while identifying the machine check, 2. (Trained service technician only) Extract the or the server was unable to identify the machine check. machine check data, which will be used to identify the machine check. OVERSPEC There is insufficient power to power the system. The LOG LED might also be lit. 1. Add a power supply if only one power supply is installed. 2. Use 220 V ac instead of 110 V ac. 3. Reseat the following components: a. Power supply b. Power backplane 4. Remove optional devices. 5. Replace the components listed in step 3 one at a time, in the order shown, restarting the server each time. LOG Information is present in the BMC log and system-error log. 1. Save the log if necessary and clear. 2. Check the log for possible errors. LINK There is a fault in an SMP Expansion Port or SMP Expansion cable (requires scalability enablement). Notes: 1. This LED remains lit until the problem is resolved and the server is turned off and restarted. 2. If a fault occurs, the SMP Expansion Port link LED on the failed port is off. 1. Check the SMP Expansion Port link LEDs to find the failing port or cable. 2. Reseat the SMP Expansion cables. 3. Replace the SMP Expansion cables. 4. (Trained service technician only) Replace the microprocessor board. 72 IBM System x3850 M2 and System x3950 M2 Types 7141 and 7233: Installation Guide

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v
Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v
See the parts listing in the
Problem Determination and Service Guide
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 LED
also lit
Description
Action
All LEDs are off (only
the power LED is lit or
flashing).
No action necessary.
All LEDs are off (the
power LED is lit or
flashing and the
system-error LED is
lit).
A machine check has occurred. The
server is identifying the machine
check, the server was interrupted
while identifying the machine check,
or the server was unable to identify
the machine check.
1.
Wait several minutes for the server to identify the
machine check and the server will restart.
2.
(Trained service technician only) Extract the
machine check data, which will be used to identify
the machine check.
OVERSPEC
There is insufficient power to power
the system. The LOG LED might
also be lit.
1.
Add a power supply if only one power supply is
installed.
2.
Use 220 V ac instead of 110 V ac.
3.
Reseat the following components:
a.
Power supply
b.
Power backplane
4.
Remove optional devices.
5.
Replace the components listed in step 3 one at a
time, in the order shown, restarting the server each
time.
LOG
Information is present in the BMC
log and system-error log.
1.
Save the log if necessary and clear.
2.
Check the log for possible errors.
LINK
There is a fault in an SMP
Expansion Port or SMP Expansion
cable (requires scalability
enablement).
Notes:
1.
This LED remains lit until the
problem is resolved and the
server is turned off and
restarted.
2.
If a fault occurs, the SMP
Expansion Port link LED on the
failed port is off.
1.
Check the SMP Expansion Port link LEDs to find
the failing port or cable.
2.
Reseat the SMP Expansion cables.
3.
Replace the SMP Expansion cables.
4.
(Trained service technician only) Replace the
microprocessor board.
72
IBM System x3850 M2 and System x3950 M2 Types 7141 and 7233: Installation Guide