HP Book 900 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 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 1-14—it lists the roles that the replaceable modules play in each of the functional subsystems.

		LCD Module
Top Case	Touch	External
(microphone)
		Module Bay
	Pad

		CPU	BIOS
Module
			IC
	RAM			PCMCIA
	Board		Motherboard	Socket

	PCA
Fan
Hard Disk	Battery
Drive
	Keyboard
	(pointing stick)

PCMCIA

Cards

Speaker

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

All external connections are made to the motherboard.

Figure 1-4. Replaceable Module Diagram

HP OmniBook 900 Product Information 1-13