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Customer Advisories, Customer And Security Bulletins, And Customer Notices; Product Change Notifications; Helpful Hints; At Startup - HP Z400 Maintenance And Service Manual

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Customer Advisories, Customer and Security Bulletins, and Customer Notices

To find advisories, bulletins, and notices:
1.
Visit http://www.hp.com/go/workstationsupport.
2.
Select the desired product.
3.
Under Resources for <your selected product>, select See more....
4.
Under Self-Help resources: in the center of the window, choose the desired action and
appropriate information in the scroll list to view the index.

Product Change Notifications

Product Change Notifications (PCNs) are proactive notifications for product changes occurring within a
30-60 day window of the effective date of the change in the manufacturing process. PCNs give
customers advanced notice of changes to their product, such as an updated BIOS version that they may
need to qualify prior to the change taking place. The latest PCNs are located at:
go/workstationsupport.

Helpful hints

If you encounter a problem with the workstation, monitor, or software, the following provides a list of
general suggestions that help you isolate and focus on the problem before taking further action.

At startup

Verify that the workstation and monitor are plugged into a working electrical outlet.
Remove all diskettes, optical disks, and USB drive keys from the drives before powering on the
workstation.
Verify that the workstation is turned on and the green power light is on.
If you have installed an operating system other than the factory-installed operating system, check
to be sure that it is supported on your system by visiting http://www.hp.com/go/quickspecs.
Verify that the monitor is turned on and the green monitor light is on.
Turn up the brightness and contrast controls of the monitor if the monitor is dim.
If the workstation has multiple video sources and only a single monitor, the monitor must be
connected to the source selected as the primary VGA adapter. During startup, the other monitor
connectors are disabled; if the monitor is connected to one of these ports, it will not function after
Power-on Self Test (POST). You can select the default VGA source in Computer Setup (F10).

During operation

Look for blinking LEDs on the front of the workstation. The blinking lights are error codes that will
help you diagnose the problem. Refer to the Diagnostic lights and audible (beep) codes section of
this document for information on interpreting diagnostic lights and audible codes.
Press and hold any key. If the system beeps, then your keyboard is operating correctly.
Check all cables for loose or incorrect connections.
172
Chapter 6 Diagnostics and troubleshooting
http://www.hp.com/
ENWW

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