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HP OmniBook 900 Product Information 1-13
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.
PCMCIA
Cards
CPU
Module
Hard Disk
Drive
Battery
Keyboard
(pointing stick)
RAM
Board
LCD Module
Top Case
(microphone)
Motherboard
PCA
BIOS
IC
External
Module Bay
Fan
Speaker
Touch
Pad
PCMCIA
Socket
Figure 1-4. Replaceable Module Diagram
The power switch and lid
switch are contained on
the motherboard.
All external connections
are made to the
motherboard.