HP ZBook 15 G3 Base Model Mobile Workstation User Manual download pdf (Page 110)

IMPORTANT: System board failure is not common. Do not replace the system board until you have tried all

other troubleshooting options.

NOTE: Determine whether a previous service case might be related to the current problem. For example, a

fan detection issue may be caused by a loose connection resulting from previous service.

TIP: Without an RTC battery (3V coin-cell battery), the computer automatically reboots. This is a useful

feature when the power connector cable (between external AC adapter and system board) is defective.

NOTE: Most of the time, eective troubleshooting can prevent a system board replacement.

Items that may prevent resolution of the issue:

●

The information provided about the issue omits key details, including any actions taken before the issue

occurred.

●

BIOS, software, and drivers have not been updated.

●

Cables or connections are loose.

●

Technician is unaware of information available from the HP Support website (i.e., CA - Customer

Advisory).

●

The issue is related to existing or known issues that may be identied in existing support articles.

●

Technician may have omitted steps in the provided repair instructions (e.g., Spare Part Replacement

Instructions).

●

Skipping one of steps from Troubleshooting Methodology table results in No Defect Found (NDF)/No

Fault Found (NFF)/No Issue Detected (NID) messages.

Verify solution

●

Verify that the implemented solution works. Reboot the system or device and try to complete the task

that produced the issue.

●

If a part has been replaced, verify other basic functions. For example, GPU replacement requires

keyboard removal. Therefore, it is good practice to verify all basic components to be sure that the

solution is complete.

●

Explain to the customer why the issue occurred and what was done to resolve it. If the solution you used

was in an HP Public document, provide the document information to the customer, letting them know it

can be located on www.hp.com. Also, tell them that there are other solutions available on the website.

Advise the customer to check the website rst when they have an issue. It may save them time calling in.

●

Document the correct issue. Update the case with as many details as possible for other agents and

engineering to analyze and study for lessons learned.

Helpful Hints

After you become familiar with the general troubleshooting steps above (General troubleshooting steps

on page 81), follow the helpful hints below before running diagnostics and troubleshooting.

At startup

TIP: If you have installed an operating system other than the factory-installed operating system, go to

http://http://www.hp.com/go/quickspecs and verify that it is supported on your system.

1. Be sure that the computer is plugged into a working AC outlet.

2. Be sure that power is connected to the docking station if a dock is used.

98 Chapter 7 Troubleshooting guide

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HP ZBook 15 G3 Base Model Mobile Workstation User Manual Page 110

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