Table 1-13. Functional Structure - HP OmniBook 900 Service Manual

Bootup CPU module
Motherboard
BIOS IC
Floppy disk module
Hard disk drive
CPU module
Processor
Motherboard
Motherboard
Memory
RAM board
Power Battery
Motherboard
AC adapter
Display Motherboard
LCD module
Motherboard
Hard disk
Hard disk drive
Floppy drive Motherboard
Floppy disk module
Keyboard Motherboard
BIOS IC
Keyboard
Motherboard
Pointer
BIOS IC
Keyboard
Top case
Audio Motherboard
Speaker
Motherboard
Status
Motherboard
Serial
Parallel Motherboard
Infrared Motherboard
Motherboard
PS/2 port
Motherboard
USB
Motherboard
Docking port
PCMCIA Motherboard
PCMCIA socket
1-14 Product Information

Table 1-13. Functional Structure

Main processor.
Primary system circuitry.
Code for basic system functions.
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.
First 32 MB of RAM, video RAM.
Changeable RAM.
Power storage.
AC adapter socket, power switch, lid switch, system-off switch, power
supply, power control circuitry.
AC-to-DC converter.
Display/graphics controller, PCMCIA/zoomed video controller, video
RAM, power converter for backlight.
Display output, backlight.
Hard disk controller.
Hard disk mechanism.
Floppy disk controller.
Floppy disk mechanism.
Keyboard controller.
Keyboard BIOS.
Key switches.
Keyboard controller, pointing stick controller (PS/2 output).
Keyboard BIOS.
Pointing stick sensor.
Touch pad sensor, controller (PS/2 output).
Audio controller, audio decoder, speaker amplifier, headphone amplifier,
zoomed video controller, external audio jacks, microphone.
Speaker (mixed left and right channels).
Keyboard controller, main LEDs, keyboard LEDs.
I/O controller, serial connector.
I/O controller, parallel connector.
I/O controller, infrared transmitter/receiver.
Keyboard controller, PS/2 processor, PS/2 connector.
Bus controller (South Bridge), USB connector.
Docking logic, docking connector.
PCMCIA controller.
PCMCIA connectors.
HP OmniBook 900