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Purpose This service guide contains reference information for the Extensa 610 Notebook computer. It gives the system and peripheral specifications, shows how to identify and solve system problems and explains the procedure for removing and replacing system components. It also gives information for ordering spare parts. Manual Structure This service guide consists of four chapters and seven appendices as follows: Chapter 1 System Introduction This chapter gives the technical specifications for the Notebook and its peripherals. Chapter 2 Major Chip Descriptions This chapter lists the major chips used in the Notebook and includes pin descriptions and related diagrams of these chips. Chapter 3 BIOS Setup Information This chapter includes the system BIOS information, focusing on the BIOS setup utility. Chapter 4 Disassembly and Unit Replacement This chapter tells how to disassemble the Notebook and replace components. Appendix A Model Number Definition This appendix lists the model number definition of this Notebook model series. Appendix B Exploded View Diagram This appendix shows the exploded view diagram of the Notebook. Appendix C Spare Parts List This appendix contains spare parts information. Appendix D Schematics This appendix contains the schematic diagrams of the Notebook. Appendix E BIOS POST Checkpoints This appendix lists all the BIOS POST checkpoints. Appendix F Technical Bulletins and Updates This appendix reserves a space for technical bulletins and future updates. Appendix G Forms This appendix contains standard forms that can help improve customer service.