HP Workstation z400

11 Diagnostics and troubleshooting
This chapter describes the tools available for diagnosing and troubleshooting system issues, and
includes these topics:
Topics
Calling technical support on page 59
Locating ID labels on page 60
Locating warranty information on page 60
Diagnosis guidelines on page 61
Troubleshooting checklist on page 62
HP troubleshooting resources and tools on page 63
Troubleshooting scenarios and solutions on page 66
Self-troubleshooting with HP Vision Field Diagnostics
on page 76
Diagnostic codes and errors on page 84
Calling technical support
At times you might encounter an issue that requires technical support. When you call technical support:
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Have the workstation readily accessible.
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Write down the workstation serial numbers, product numbers, model names, and model numbers
and have them in front of you.
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Note any applicable error messages.
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Note any add-on options.
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Note the operating system.
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Note any third-party hardware or software.
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Note the details of any blinking LEDs on the front of the workstation.
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Note the applications you were using when you encountered the problem.
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Note the power supply BIST status, if applicable.
NOTE: When calling in for service or support, you might be asked for the Product Number (example:
PS988AV) of the workstation. If the workstation has a Product Number, it is generally located next to
the 10- or 12-digit Serial Number of the workstation.
NOTE: On most models, the serial number and product number labels can be found on the top panel
or side of the workstation and at the rear of the workstation.
ENWW Calling technical support 59