Table 1-13. Functional Structure - HP OmniBook 3100 Service Manual

Function Modules
Bootup CPU module
Motherboard
System BIOS IC**
Keyboard BIOS IC**
Floppy disk drive
Hard disk drive
CPU module
Processor
Motherboard
Memory Motherboard
RAM boards
Battery
Power
Motherboard
AC adapter
Icon PCA
Motherboard
Display
LCD module
LVDS PCA*
Inverter PCA
Motherboard
Hard disk
Hard disk drive
Floppy drive Motherboard
Floppy disk drive
Keyboard Motherboard
Keyboard BIOS IC**
Keyboard
Motherboard
Touch pad
Top case
Audio Motherboard
Audio PCA
Top case
Motherboard
Serial
Parallel Motherboard
Infrared Motherboard
IR PCA
Icon PCA
Motherboard
PS/2 port
USB Motherboard
USB PCA
Docking port Motherboard
Motherboard
PCMCIA
* The LVDS PCA is not present in products with 12-inch displays. In these products, the LVDS functions are
performed by the LCD module.
** The BIOS IC on the OmniBook 2100/3100 performs both system and keyboard BIOS functions.
HP OmniBook 2100/3000/3100

Table 1-13. Functional Structure

Roles
Main processor (MMO).
Primary system circuitry.
Code for basic system functions.
Code for keyboard 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 16 MB (OmniBook 3000) or 32 MB (OmniBook 2100/3100) of
RAM, video RAM.
Optional, additional RAM.
Power storage.
Power supply, ac adapter socket, system-off switch.
AC-to-dc converter.
Power switch, lid switch.
Display/graphics controller, video RAM.
Display output, backlight.
Display drivers, signal processing. (Low-voltage differential signaling)
Power converter for backlight.
Hard disk controller.
Hard disk mechanism.
Floppy disk controller.
Floppy disk mechanism.
Keyboard controller.
Keyboard BIOS.
Key switches.
Keyboard and PS/2 controller.
Touch pad PS/2 device.
Speaker amplifier, external audio jacks.
Audio controller, wave synthesizer, headphone amplifier.
Microphone, speakers.
I/O controller, serial connector.
I/O controller, parallel connector.
I/O controller.
Infrared transmitter/receiver.
Pass-through connection.
Keyboard and PS/2 controller, PS/2 connector.
I/O controller.
USB power controller, USB connector.
Docking logic, docking connector.
PCMCIA controller, PCMCIA connectors.
Product Information 1-15