Table 1-7. Functional Structure HP Omnibook XE3 (Technology Code GF) Product Information 1-17 Function Components Used Component Roles Bootup CPU module Motherboard Floppy disk module Hard disk drive Main processor. Primary system circuitry. First source of disk-based startup code. Second source of disk-based startup code. Processor CPU module Motherboard Main processor, numeric data processor, L1 and L2 cache. Primary system circuitry. Memory Motherboard SDRAM module Video RAM. Changeable RAM (2 slots). Power Battery Motherboard Switchboard PCA AC adapter Power storage. Power control circuitry, AC adapter socket, lid switch, system-off switch, power supply. Power switch, standby button.
AC-to-DC converter. Display Motherboard Display assembly Video controller, display drivers, LVDS processing, display/graphics controller, video RAM. Display output, backlight, power converter for backlight. Hard disk Motherboard Hard disk drive Hard disk controller. Hard disk mechanism. Floppy drive Motherboard Floppy disk module I/O controller, floppy connector. Floppy disk mechanism. Keyboard Motherboard Keyboard Keyboard controller, keyboard BIOS. Key switches. Touch pad Motherboard Top case Keyboard BIOS. Touch pad sensor, click buttons, controller (PS/2 output).
Audio Motherboard Switchboard PCA Headphone PCA Top case Audio controller, audio decoder, speaker amplifier, external microphone jack. Microphone. Earphone amplifier. Speakers. Status Motherboard Switchboard PCA CD player PCA LED circuitry, keyboard controller. Status LEDs. CD/DVD status display. Parallel Motherboard I/O controller, parallel connector. PS/2 port Motherboard Keyboard controller, PS/2 connector. USB Motherboard Bus controller, USB connectors. Docking port Motherboard Docking logic, docking connector. PCMCIA Motherboard PCMCIA sockets PCMCIA controller. PCMCIA connectors.