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2-24 Removal and Replacement HP OmniBook 4100/4150
Removing the Motherboard or Bottom Case
(HP Authorized Service Providers Only)
Required Equipment
• Small Phillips screwdriver.
• 5-mm hex driver (or 3/16 inch).
• OmniBook 4150 CPU removal tool (HP part number T-335665).
Removal Procedure
1. Unplug the ac adapter, if present, and remove the battery.
2. Remove these additional assemblies:
• Floppy module or other module (page 2-3).
• Hard disk drive (page 2-5).
• Keyboard (page 2-9).
• Display assembly (page 2-11).
• Top case (page 2-16).
3. Remove the complete CPU assembly—see page 2-19 for detailed precautions and instructions.
4. On the back of the case, use a 5-mm hex driver to remove the two standoffs from the VGA
connector.
5. Lift the front of the VGA PCA to unplug the PCA, then slide it out of the case. (If an LVDS PCA
is present, it is attached.)
6. Remove the screw from the IR PCA and lift the PCA off the frame. Unplug the IR cable from the
motherboard.