Removing the Motherboard or Bottom Case

(HP Authorized Service Providers Only)

Required Equipment

•#0 Phillips screwdriver.

When Installing a New Motherboard

Before replacing the motherboard, you must (if possible) electronically store the motherboard’s serial number and service ID for transfer to the new motherboard.

1.Exit Windows and boot to a DOS prompt.

2.Run ESN.EXE from one of these sources:

•On a factory software installation, change to the \hp\drivers\hputils directory and type esn at the prompt.

•Otherwise, copy \hp\drivers\hputils\ESN.EXE from the Recovery CD, then run it on the notebook.

3.Store the serial number and service ID as directed.

Removal Procedure

1.Unplug the AC adapter, if present, and remove the battery.

2.Remove these additional assemblies:

•Battery (page 2-4).

•Plug-in module (page 2-5).

•Hard disk drive (page 2-6).

•Keyboard cover (page 2-9).

•Keyboard (page 2-11).

•SDRAM modules (page 2-13).

•Mini-PCI card (page 2-16).

•Display assembly (page 2-18).

•Fan and heatsink (page 2-22).

•CPU module (page 2-25).

•Top case (page 2-27).

•Hinge saddles (page 2-30).

3.Remove the retaining screws from the hard disk drive guide, and lift the guide off of the motherboard.

4.Remove both retaining screws from the motherboard.

2-32 Removal and Replacement

HP Pavilion zt1100/xz100 Omnibook xt1000