Section 4 Theory Of Operation; Introduction; Notebook Functional Overview - Texas Instruments Extensa 60x Series Maintenance Manual

4.1

Introduction

This section contains a general block diagram theory of operation description of the
Extensa 60x/65x Series Notebook Computers.
Note: Various internal components may change on future models and busses/
bus speeds are subject to change.
4.2

Notebook Functional Overview

The Extensa 60x/65x Series Notebooks consist of eight major functions or sections
including:
System Processor - implemented on the Motherboard Assembly
Memory Subsystem - implemented on the Motherboard Assembly
Processor/Memory/I/O Control - implemented on the Motherboard
Assembly
Keyboard Subsystem - implemented on the Motherboard and the Keyboard
Assemblies
Video Subsystem - implemented on the Top Board and on the LCD Display
Assembly
Sound Subsystem - implemented on the Motherboard Assembly.
Touchpad Mouse Subsystem- implemented on the Touchpad assembly and
on the Motherboard Assembly
Hard Disk Drive Subsystem - implemented on the Motherboard Assembly
and the Hard Disk Drive Assembly
Floppy Disk Drive Subsystem - implemented on the Motherboard and Floppy
Disk Drive Assembly
Power Subsystem - implemented on the Power Supply Board, Inverter Board,
battery packs, and AC adapter
Theory of Operation
Theory of Operation 4-1
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