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.

PCMCIA

Cards

Video

PCA

Icon PCA

(Status, IR, Mic)

Top Case

Touch pad,

Speakers

Audio

 

 

DC-DC

 

PCA

 

 

PCA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BIOS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC

 

 

 

 

Motherboard

 

 

 

 

 

 

 

 

 

PCA

 

 

 

 

 

 

 

 

 

 

 

LCD

Module

Inverter PCA

LVDS

PCA

RAM

Boards

CPU

Module

 

 

 

 

 

 

 

 

 

 

 

Plug-In

 

 

 

Pointer-Ctrl

 

Hard

 

 

 

PCA

 

Module

 

 

 

 

 

 

 

 

 

Disk

 

 

 

 

 

 

 

 

 

 

Drive

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KeyboardFront-IR

(pointing stick)PCA (LEDs)

Battery

Module

Fan

Heatsink

The power switch and lid switch are contained on the icon PCA.

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

Figure 1-4. Replaceable Module Diagram

1-12 Product Information

HP OmniBook 7100