Informatika

Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC
Maintenance and Service Guide

SUMMARY This guide is a troubleshooting reference used for maintaining and servicing the computer. It provides comprehensive information on identifying computer features, components, and spare parts; troubleshooting computer problems; and performing computer disassembly procedures.

© Copyright 2010Hewlett-Packard Development Company, L.P. Bluetooth is a trademark owned by its proprietor and used by Hewlett-Packard Company under license. Intel and Arrandale are trademarks of Intel Corporation in the United States and other countries. Microsoft and Windows are U.S. registered trademarks of Microsoft Corporation. SD Logo is a trademark of its proprietor. The information contained herein issubject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein. First Edition: April 2010 Document Part Number: 594158-002MSG revision history
Revision A B Publication date April 2010 October 2010 Description Edited this guide to include HP G42 Notebook PC and Compaq CQ42 Notebook PC information only. ● Added newly supported memory modules to spare parts listings in the following locations: Computer major components on page 26, Mass storage devices on page 36, Sequential part number listing on page 39, Memorymodule on page 60. Added newly supported processors to spare parts listings in the following locations: Computer major components on page 26, Mass storage devices on page 36, Sequential part number listing on page 39, Processor on page 91. Added newly supported system boards to spare parts listings in the following locations: Computer major components on page 26, Mass storage devices on page 36,Sequential part number listing on page 39, System board on page 81. Added newly supported processors to spare parts listings in the following locations: Computer major components on page 26, Mass storage devices on page 36, Sequential part number listing on page 39, Processor on page 91. Added newly supported system boards to spare parts listings in the following locations: Computer majorcomponents on page 26, Mass storage devices on page 36, Sequential part number listing on page 39, System board on page 81 Added newly supported power cord to spare parts listings in the following locations: Miscellaneous Parts, Sequential part number listing on page 39, Memory module on page 60. Removed Bluetooth™ references. Bluetooth is not supported.

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Safety warning notice
WARNING! To reduce the possibility of heat-related injuries or of overheating the computer, do not place the computer directly on your lap or obstruct the computer air vents. Use the computer only on a hard, flat surface. Do not allow another hard surface, such as an adjoining optional printer, or a softsurface, such as pillows or rugs or clothing, to block airflow. Also, do not allow the AC adapter to contact the skin or a soft surface, such as pillows or rugs or clothing, during operation. The computer and the AC adapter comply with the user-accessible surface temperature limits defined by the International Standard for Safety of Information Technology Equipment (IEC 60950).

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Table of contents

1 Product description ........................................................................................................................................ 1 2 External component identification .............................................................................................................. 13 Identifying the hardware...