Reassembly Notes

Note: Installing a New Motherboard

If a RAM board is present, transfer it from the old motherboard to the new one:

Reprogram the BIOS IC—see the note below.

Store the serial number electronically in the new motherboard—see the steps below.

Note: Installing a New Bottom Case

Transfer these parts from the old bottom case to the new one:

I/O door, docking doors, and module latches (see the figures below).

Speakers.

Install a new regulatory/business card label.

Install a new serial number label and overlay—see the steps below.

Route the speaker wires so they do not get pinched or block screw holes.

Route the fan wires at the bottom of the opening next to the motherboard.

When attaching the IR PCA to the right frame, make sure the PCA is parallel with the back of the case.

Before installing the CPU module, assemble it into the bottom plate and attach the top plate. Then install the complete assembly on the motherboard. See the following caution.

Caution

Install or replace CPU module thermal pads that are missing or damaged. See the figures below.

Keep the CPU assembly flat while installing it. Press it down above the connectors at the right end. Otherwise, you could damage the connectors.

Install the two screws in diagonally opposite corners of the top plate.

Note

If you installed a new motherboard with a new BIOS IC, the IC contains only enough basic programming to boot the OmniBook. After installing the IC, you must reprogram it. Hewlett- Packard prefers that you program the IC with the latest BIOS—follow the directions carefully. You can download it from the OmniBook website (see page vi).

2-18 Removal and Replacement

HP OmniBook 4100