Table 1-8. Functional Structure Description - HP Omnibook XE4400 Service Manual

Bootup CPU module
Motherboard
Hard disk drive
Floppy drive
Processor CPU module
Motherboard
Motherboard
Memory
SDRAM module
Power Battery
Motherboard
AC adapter
Display Motherboard
Display assembly
Motherboard
Hard disk
Hard disk drive
Floppy drive Motherboard
Floppy drive
Motherboard
Keyboard
Button cover
Keyboard
PS/2 Motherboard
Top case
Touchpad
Motherboard
Audio
Audio Control PCA
Keyboard
cover/speaker
assembly
Status Motherboard
Button cover
Top case
Serial Motherboard
Parallel Motherboard
Infrared Motherboard
Motherboard
PS/2 port
Motherboard
USB
Motherboard
S-Video
Motherboard
Port Replicator
Motherboard
PCMCIA
PCMCIA socket
Wireless LAN Mini-PCI
Antenna PCAs
(certain models)
Motherboard
LAN
Motherboard
Modem
HP Omnibook XE4400

Table 1-8. Functional Structure Description

Main processor (MMO).
Primary system circuitry, system BIOS.
First source of disk-based startup code.
Second source of disk-based startup code.
Main processor, numeric data processor, L1 and L2 cache.
Primary system circuitry.
Video RAM
no onboard SDRAM
Power storage.
AC adapter socket, reset button, lid switch, power supply, power
control circuitry.
AC-to-DC converter.
Graphics controller, video RAM
Display output, backlight, power converter for backlight.
Hard disk controller.
Hard disk mechanism.
I/O controller, floppy connector.
Floppy drive mechanism.
Keyboard BIOS, keyboard controller.
Power switch, one-touch buttons
Key switches.
Keyboard circuitry, keyboard controller, keyboard BIOS.
Touch pad sensor, click buttons, controller (PS/2 output).
Audio controller, audio decoder, speaker amplifier, microphone.
External audio jacks, headphone amplifier, audio-off switch.
Speakers.
LED circuitry, keyboard controller.
Keyboard LEDs.
Main status LEDs.
I/O controller, serial connector.
I/O controller, parallel connector.
I/O controller, infrared transmitter/receiver.
PS/2 connector, keyboard controller.
Bus controller (South Bridge), USB connector.
I/O controller, S-video connector (certain models).
Port replicator logic, port replicator connector (certain models).
PCMCIA controller.
PCMCIA connectors.
I/O controller, radio, radio frequency circuitry.
Transmit/receive antennas.
LAN circuitry, bus controller, LAN connector.
Modem circuitry (certain models), modem connector.
Product Information 1-13