Lenovo Flex System x280 X6 Compute Node Installation And Service Manual page 78

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.
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Flex System x280 X6, x480 X6, and x880 X6 Compute Node Types 7903 and 4259: Installation and Service Guide
v If the check log LED is lit, it indicates that a condition that causes an event
to log in the IMM event log has occurred.
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 Flex System Manager management software.
– For more information about the CMM led command, see the "Flex System
Chassis Management Module: Command-Line Interface Reference Guide"
at http://pic.dhe.ibm.com/infocenter/flexsys/information/topic/
com.ibm.acc.cmm.doc/cli_command_led.html.
– From the CMM web interface, select Compute Nodes from the Chassis
Management menu. For more information, see the "Flex System Chassis
Management Module: User's Guide" at http://pic.dhe.ibm.com/
infocenter/flexsys/information/topic/com.ibm.acc.cmm.doc/
cmm_user_guide.html. All fields and options are described in the CMM
web interface online help. See Starting the web interface in the "Flex
System Chassis Management Module: User's Guide" at
http://pic.dhe.ibm.com/infocenter/flexsys/information/topic/
com.ibm.acc.cmm.doc/cmm_ug_startwebinterface.html for information
about starting the CMM web interface.
– For more information about Flex System Manager management software,
see the "Flex System Manager Software: Installation and Service Guide" at
http://pic.dhe.ibm.com/infocenter/flexsys/information/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 Flex System chassis, (see "Removing
a compute node from a chassis" on page 701 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 715 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.