&KDSWHU&KDSWHUDisassembly and Unit ReplacementDisassembly and Unit Replacement4-1This chapter contains step-by-step procedures on how to disassemble the notebook computer formaintenance and troubleshooting.To disassemble the computer, you need the following tools:• Wrist grounding strap and conductive mat for preventing electrostatic discharge• Flat-bladed screwdriver• Phillips screwdriver• Hexagonal screwdriver• Tweezers• Plastic stick The screws for the different components vary in size. During thedisassembly process, group the screws with the correspondingcomponents to avoid mismatch when putting back the components.4.1 General Information4.1.1 Before You BeginBefore proceeding with the disassembly procedure, make sure that you do the following:1. Turn off the power to the system and all peripherals.2. Unplug the AC adapter and all power and signal cables from the system.3. Remove the battery pack from the notebook by (1) press the battery compartment cover latchand slide it toward the front of the computer, and (2) pull out the battery pack.