HP 4100 manual Internal Design, Replaceable Module Diagram

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

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