IBM Flex System x440 Compute Node Installation And Service Manual page 70

2. To view the light path diagnostics LEDs, select one of the following procedures:
The following illustration shows the LEDs on the light path diagnostics panel.
The following illustration shows the locations of the light path diagnostics LEDs
on the system board.
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IBM Flex System x440 Compute Node Types 7917 and 2584: Installation and Service Guide
v If the fault LED is lit, it indicates that an error has occurred; view the light
path diagnostics panel and LEDs to isolate the failing component.
v You can view the LEDs through the CMM led command, the CMM web
interface, or IBM Flex System Manager management software.
– For more information about the CMM led command, see the "IBM Flex
System Chassis Management Module: Command-Line Interface Reference
Guide" at http://ralfss21.raleigh.ibm.com:8099/help/topic/
com.ibm.acc.cmm.doc/cli_command_led.html.
– From the CMM web interface, select Blade Servers from the Chassis
Management menu. All fields and options are described in the CMM web
interface online help.
– For more information about IBM Flex System Manager management
software, see the "IBM Flex System Manager Software: Installation and
Service Guide" at http://ralfss21.raleigh.ibm.com:8099/help/topic/
com.ibm.acc.8731.doc/product_page.html.
v If you are in the same location as the compute node, you can complete the
following steps:
a. Remove the compute node from the IBM Flex System chassis, (see
"Removing a compute node from a chassis" on page 489 for instructions).
b. Carefully lay the compute node on a flat, static-protective surface.
c. Open the compute node cover (see "Removing the compute node cover"
on page 498 for instructions).
d. Remove the air baffles that are installed over the DIMM connectors.
e. Press the power button. When you press the power button, LEDs on the
light path diagnostics panel and the system board will be lit if there are
any hardware-related issues.
Note: The power source for light path diagnostics is designed to last only
a short time. If you press the power button and the light path diagnostics
LED lights, light path diagnostics is charged to light the LEDs.