Chapter 6. Troubleshooting; Service Bulletins; Diagnostic Tools; Light Path Diagnostics - Lenovo Flex System x440 Compute Node Installation And Service Manual

Chapter 6. Troubleshooting

Use this information to diagnose and correct problems that might occur in your x440 Compute Node Types
7167 and 2590.
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
technical assistance" on page 945

Service bulletins

IBM continually updates the support website with tips and techniques that you can use to solve problems
that you might have with the x440 Compute Node Types 7167 and 2590.
To find service bulletins that are available for the x440 Compute Node Types 7167 and 2590, go to
www.lenovo.com/support

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
"Installation guidelines" on page
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.
KVM connector
USB connector
• If the check log LED is lit, it indicates that an Automatic BIOS Recovery has occurred. The compute
node will start by using the backup UEFI image.
• 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.
© Copyright Lenovo 2014, 2018
for more information.
and search for the terms 7167 or 2590 and retain.
879.
Hard disk drive
activity LED
Power
button/LED
Appendix A "Getting help and
Hard disk drive
status LED
Fault
Identify Check log LED
LED LED
http://
"Safety" on page iii and
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