Lenovo Flex System x220, Installation And Service Manual

Page: 69 / 714

Chapter 6. Troubleshooting
Use this information to diagnose and correct problems that might occur in your Flex System x220 Compute
Node.
The information in this section describes tools and procedures for solving hardware and software problems.
If you cannot diagnose and correct a problem by using the information, see Appendix A “Getting help and
technical assistance” on page 687 for more information.
Service bulletins
Lenovo continually updates the support website with tips and techniques that you can use to solve problems
that you might have with the Flex System x220 Compute Node.
To find service bulletins that are available for the Flex System x220 Compute Node, go to
http://www.lenovo.com/support and search for the terms
2585
or
7906
and
retain
.
Diagnostic tools
Use this information to review the diagnostic tools to diagnose and solve hardware-related problems.
Light path diagnostics
Use this information as an overview of light path diagnostics.
Light path diagnostics is a system of LEDs above the control panel and on various internal components of
the compute node. When an error occurs, LEDs can be lit throughout the compute node to help identify
the source of the error.
Viewing the light path diagnostics LEDs
Use this information to locate and identify the light path diagnostics LEDs.
Before you work inside the compute node to view light path diagnostics LEDs, read “Safety” on page iii and
“Installation guidelines” on page 637.
If an error occurs, view the light path diagnostics LEDs in the following order:
1. Look at the control panel on the front of the compute node.
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USB connector
KVM connector
Power button/LED
Identify LED
Check log
LED Fault
LED
Hard disk drive
activity LED Hard disk drive
status LED
• 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.
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