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.
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
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.