HP Armada 4200 Armada 4200 Family of Personal Computers Reference Guide - Page 135

Servicing the Computer, Appendix A, Compaq Customer Support.

Page 135 highlights

7. Replace the retaining ring by aligning the notches. Then use the trackball tool to turn the retaining ring clockwise until it snaps into place. 8. Replace the battery pack and reconnect the AC Adapter if necessary. Servicing the Computer To get help from Compaq Customer Support or to find a Compaq authorized reseller or service provider location, call one of the numbers in the worldwide telephone numbers list in Appendix A, "Compaq Customer Support." Your Compaq authorized reseller or service provider is available to answer your questions, install optional equipment, and service your computer. If you take the computer in for service, remember to provide the power-on password or, if possible, disable the password in Passwords Properties prior to delivery to the service provider. Troubleshooting 15-23

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Troubleshooting
15-23
7. Replace the retaining ring by aligning the notches. Then use
the trackball tool to turn the retaining ring clockwise until it
snaps into place.
8. Replace the battery pack and reconnect the AC Adapter if
necessary.
Servicing the Computer
To get help from Compaq Customer Support or to find a Compaq
authorized reseller or service provider location, call
one of the numbers in the worldwide telephone numbers list in
Appendix A, “Compaq Customer Support.”
Your Compaq authorized reseller or service provider is available
to answer your questions, install optional equipment, and service
your computer.
If you take the computer in for service, remember to provide the
power-on password or, if possible, disable the password in
Passwords Properties prior to delivery to the service provider.