Dell Wyse 5470, Руководство по обслуживанию

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Troubleshooting your system
You can troubleshoot the thin client by using indicators such as diagnostic lights and error messages during the operation of the device.
Additionally, you can use Enhanced Pre-Boot System Assessment (ePSA) diagnostics to carry out complete diagnosis and troubleshooting
of thin clients.
Topics:
• Enhanced Pre-Boot System Assessment diagnostics
• Running the ePSA diagnostics
• Battery status LED
• Diagnostic LED
• Power behavior
Enhanced Pre-Boot System Assessment diagnostics
The Enhanced Pre-Boot System Assessment (ePSA) diagnostics, also known as system diagnostics performs a complete check of your
hardware. The ePSA is embedded with the BIOS and is launched by the BIOS internally. The embedded system diagnostics provides a set
of options for particular devices or device groups, enabling you to:
•
Run tests automatically or in an interactive mode
• Repeat tests
• Display or save test results
• Run thorough tests to introduce additional test options to provide extra information about the failed devices
• View status messages that inform you if tests are completed successfully
• View error messages that inform you of problems encountered during testing
CAUTION: Use the system diagnostics that comes with your software to test only your thin client. Using this program with other
thin clients may cause invalid results or error messages.
NOTE: Some tests for specific devices require user interaction. Always ensure that you are present at the thin client terminal
when the diagnostic tests are performed.
Running the ePSA diagnostics
1 Start up the thin client.
2 As the thin client boots, press the F12 key.
The boot menu screen is displayed.
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76 Troubleshooting your system