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.
Icon PCA (Status, IR, Mic) LCD Module Top Case Touch pad, Speakers Inverter PCA DC-DC PCA Audio PCA LVDS PCA PCMCIA Cards RAM Boards BIOS IC Motherboard PCA CPU Module Video PCA Pointer-Ctrl PCA Plug-In Module Battery Module Hard Disk Drive 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. Keyboard (pointing stick) Front-IR PCA (LEDs) Fan Heatsink Figure 1-4. Replaceable Module Diagram 1-12 Product Information HP OmniBook 7100