IBM xSeries 235, Maintenance & Troubleshooting

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Diagnostic panel LEDs
The following illustration shows the LEDs on the diagnostics panel inside the server.
CPU
VRM
MEMORY
DASD
NMI
SERVICE
PROCESSOR BUS
FAN
POWER SUPPLY
PCI BUS
2 1
NONREDUNDANT
TEMPERATURE
REMIND
The system-error LED on the operator information panel is lit when certain system
errors occur. If the system-error LED on your server is lit, you can check the
diagnostics panel to see if any LEDs are lit. You can determine the cause of the
error and the action you should take by checking the table at “Diagnostic panel
system error LED” on page 128.
Notes:
1. Depending on your server model, these items might appear in a different
orientation on the LED panel.
2. The server supports a maximum of three PCI buses.
3. See the documentation that comes with the system-management software for
more information about the service processor.
Remind button
You can use the Remind button to place the front panel system-error LED into the
Remind mode. By pressing the button, you acknowledge the failure but indicate that
you will not take immediate action. If a new failure occurs, the system-error LED will
turn on again.
In the Remind mode, the system-error LED flashes every 2 seconds. The
system-error LED remains in the Remind mode until one of the following situations
occurs:
v All known problems are resolved
v
The system is restarted
v A new problem occurs
You can use the Remind button to delay server maintenance until a later time. Also,
resetting the system-error LED enables the LED to react to another error. If the LED
is still on from the first error, it will not indicate additional errors. If you press the
Remind button (causing the LED to flash every 2 seconds) and another error
occurs, the LED will stop flashing and will instead be lit continuously to alert you to
the new error.
Chapter 3. Diagnostics
35