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Chapter 4. Diagnostics
This chapter describes the diagnostic tools that are available to help you solve problems that might occur in
the server.
Diagnostic tools
The following tools are available to help you diagnose and solve hardware-related problems:
• POST error messages and error logs
The power-on self-test (POST) generates messages to indicate successful test completion or the
detection of a problem. See “POST” on page 19, “Event logs” on page 17, and “POST error codes” on
page 19
for more information.
• Troubleshooting tables
These tables list problem symptoms and actions to correct the problems. See “Troubleshooting tables”
on page 46 for more information.
• Dynamic System Analysis (DSA) Preboot diagnostic programs
The DSA Preboot diagnostic programs provide problem isolation, conguration analysis, and error log
collection. The diagnostic programs are the primary method of testing the major components of the server
and are stored in integrated USB memory. The diagnostic programs collect the following information
about the server:
– System conguration
– Network interfaces and settings
– Installed hardware
– Service processor status and conguration
– Vital product data, rmware, and UEFI conguration
– Hard disk drive health
– RAID controller conguration
– Controller and service processor event logs, including the following information:
– System error logs
– Temperature, voltage, and fan speed information
– Self-monitoring Analysis, and Reporting Technology (SMART) data
– Machine check registers
– USB information
– Monitor conguration information
– PCI slot information
The diagnostic programs create a merged log that includes events from all collected logs. The information
is collected into a le that you can send to Lenovo service and support. Additionally, you can view the
server information locally through a generated text report le. You can also copy the log to removable
media and view the log from a Web browser. See “Running the diagnostic programs” on page 65
for
more information.
• Server LEDs
Use the LEDs on the server to diagnose system errors quickly. See “System-board LEDs” on page 112
for more information.
Event logs
Error codes and messages are displayed in the following types of event logs:
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