HP omnibook xe3 Service Manual
HP OmniBook XE3
Product Information
1-19
Table 1-1. Functional Structure
Function
Components Used
Component Roles
Bootup
CPU module
Motherboard
Floppy disk module
Hard disk drive
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.
Primary system circuitry.
First source of disk-based startup code.
Second source of disk-based startup code.
Processor
CPU module
Motherboard
Motherboard
Main processor, numeric data processor, L1 and L2 cache.
Primary system circuitry.
Primary system circuitry.
Memory
Motherboard
SDRAM module
Video PCA
SDRAM module
Video PCA
No onboard RAM.
Changeable RAM (2 slots).
Video RAM.
Changeable RAM (2 slots).
Video RAM.
Power
Battery
Motherboard
Motherboard
Switchboard PCA
AC adapter
AC adapter
Power storage.
Power control circuitry, AC adapter socket, lid switch, system-off switch,
power supply.
Power button, standby button.
AC-to-DC converter.
Power control circuitry, AC adapter socket, lid switch, system-off switch,
power supply.
Power button, standby button.
AC-to-DC converter.
Display
Motherboard
Display assembly
Video PCA
Display assembly
Video PCA
Video controller.
Display output, backlight, power converter for backlight.
Display drivers, LVDS processing, display/graphics controller, video
RAM.
Display output, backlight, power converter for backlight.
Display drivers, LVDS processing, display/graphics controller, video
RAM.
Hard disk
Motherboard
Hard disk drive
Hard disk drive
Hard disk controller.
Hard disk mechanism.
Hard disk mechanism.
Floppy drive
Motherboard
Floppy disk module
Floppy disk module
I/O controller, floppy connector.
Floppy disk mechanism.
Floppy disk mechanism.
Keyboard
Motherboard
Keyboard
Keyboard
Keyboard controller, keyboard BIOS.
Key switches.
Key switches.
Touch pad
Motherboard
Top case
Top case
Keyboard BIOS.
Touch pad sensor, click buttons, controller (PS/2 output).
Touch pad sensor, click buttons, controller (PS/2 output).
Audio
Motherboard
Switchboard PCA
Headphone PCA
Top case
Headphone PCA
Top case
Audio controller, audio decoder, speaker amplifier, external microphone
jack.
Microphone.
Earphone amplifier.
Speakers.
jack.
Microphone.
Earphone amplifier.
Speakers.
Status
Motherboard
Switchboard PCA
CD player PCA
Switchboard PCA
CD player PCA
LED circuitry, keyboard controller.
Status LEDs.
CD-ROM/DVD status display.
Status LEDs.
CD-ROM/DVD status display.
Serial
Motherboard
I/O controller, serial connector.
Parallel
Motherboard
I/O controller, parallel connector.
Infrared
Motherboard
I/O controller, infrared transmitter/receiver.
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 sockets
PCMCIA controller.
PCMCIA connectors.
PCMCIA connectors.