Purpose This service guide aims to furnish technical information to the service engineers and advanced users when upgrading, configuring, or repairing the 390 Series Notebook computer. Manual Structure This service guide contains technical information about the 390 Series Notebook computer. It consists of three chapters and five appendices. Chapter 1 System Introduction This chapter describes the system features and major components. It contains the 390 series Notebook computer board layout, block diagrams, cache and memory configurations, power management and mechanical specifications. Chapter 2 Major Chips Description This chapter describes the features and functions of the major chipsets used in the system board. It also includes chipset block diagrams, pin diagrams, and pin descriptions. Chapter 3 BIOS Setup Utility This chapter describes the parameters in the BIOS Utility screens. Chapter 4 Disassembly and Unit Replacement This chapter describes how to disassemble the 390 Series Notebook computer to make replacements or upgrades. Appendix A Model Number Definition This appendix shows the different configuration options for the 390 Series Notebook computer. Appendix B Exploded View Diagram This appendix illustrates the system board and CPU silk screens. Appendix C Spare Parts List This appendix lists the spare parts for the 390 Series Notebook computer with their part numbers and other information.

About this Manual Purpose This service guide aims to furnish technical information to the service engineers and advanced users when upgrading, configuring, or repairing the 390 Series Notebook computer. Manual Structure This service guide contains technical information about the 390 Series Notebook computer.consists of three chapters and five appendices. It Chapter 1 System Introduction This chapter describes the system features and major components. It contains the 390 series Notebook computer board layout, block diagrams, cache and memory configurations, power management and mechanical specifications. Chapter 2 Major Chips Description This chapter describes the features and functions of the major chipsets used in the system board. It also includes chipset block diagrams, pin diagrams, and pin descriptions. Chapter 3 BIOS Setup Utility This chapter describes the parameters in the BIOS Utility screens.About this Manual Purpose This service guide aims to furnish technical information to the service engineers and advanced users when upgrading, configuring, or repairing the 390 series Notebook computer. Manual Structure This service guide contains technical information about the 390 Series Notebook computer.consists of three chapters and five appendices. It Chapter 1 System Introduction This chapter describes the system features and major components. It contains the 390 series Notebook computer board layout, block diagrams, cache and memory configurations, power management and mechanical specifications. Chapter 2 Major Chips Description This chapter describes the features and functions of the major chipsets used in the system board. It also includes chipset block diagrams, pin diagrams, and pin descriptions. Chapter 3 BIOS Setup Utility This chapter describes the parameters in the BIOS Utility screens. Chapter 4 Disassembly and Unit Replacement This chapter describes how to disassemble the 390 series Notebook computer to make replacements or upgrades. Appendix A Model Number Definition This appendix shows the different configuration options for the 390 Series Notebook computer. Appendix B Exploded View Diagram This appendix illustrates the system board and CPU silk screens. Appendix C Spare Parts List This appendix lists the spare parts for the 390 series Notebook computer with their part numbers and other information. Chapter 4 Disassembly and Unit Replacement This chapter describes how to disassemble the 390 series Notebook computer to make replacements or upgrades. Appendix A Model Number Definition This appendix shows the different configuration options for the 390 Series Notebook computer. Appendix B Exploded View Diagram This appendix illustrates the system board and CPU silk screens. Appendix C Spare Parts List This appendix lists the spare parts for the 390 series Notebook computer with their part numbers and other information.