Internal Design

The motherboard PCA is the central component of the OmniBook design. It plays a role in virtually all system functions. The CPU module (MMO) and most other subsystems connect to the motherboard.

The following figure shows the connections among the replaceable electrical modules. As a substitute for a functional block diagram, see the table on page 1-13—it lists the roles the replaceable modules play in each of the functional subsystems.

 

LCD Module

 

 

Inverter PCA

 

 

(microphone)

 

 

LED Strip

Keyboard

 

Touch-pad Support

(pointing stick)

LVDS

Assembly

 

 

PCA

Fan

VGA PCA (LEDs)

IR

PCA

 

BIOS

IC

PCMCIA

Cards

CPU

Module Motherboard

PCA

RAM

Board

Speaker

 

Hard Disk

 

Drive

 

Plug-In

Main

 

Module

 

Battery

 

or Battery

 

 

DC-DC

PCA

Audio Jack

PCA

Speaker

The power switch and lid switch are contained on the motherboard.

All external connections (except IR and audio) are made to the motherboard.

Figure 1-4. Replaceable Module Diagram

1-12 Product Information

HP OmniBook 4100

Page 18
Image 18
HP 4100 manual Internal Design, Replaceable Module Diagram