Troubleshooting guide

Activity Possible cause Recommended action

If the power supply fan does not spin or the BIST* LED does not light, the

problem might be in the power supply. Contact HP for assistance.

* Some workstation models (such as the xw4550) do not have the BIST LED functionality. * For BIST information, see the

Service and Technical Reference Guide.

Calling technical support

At times you might encounter an issue that requires technical support. When you call technical support:

●

Have your 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 your workstation. If your workstation has a Product Number, it is generally located next to

the 10- or 12-digit Serial Number of your workstation.

NOTE: Refer to Ventilation, COA label, and serial number label information on page 9 for the location

of the Serial Number label on your workstation. On most models, the serial number and product number

label are located at the rear of the workstation.

For a listing of all worldwide technical support phone numbers, visit http://www.hp.com/support, select

your region, and click Contact HP in the upper-left corner.

Table 4-3 Diagnostic lights and audible codes (continued)

32 Chapter 4 Troubleshooting ENWW