Maintenance and Service Guide414Removal and Replacement PreliminariesThis chapter provides essential information for proper and safe removal and replacement service.4.1 Tools RequiredYou will need the following tools to complete the removal and replacement procedures:n Magnetic screwdrivern Phillips P0 screwdrivern 5.0-mm socket for system board screwlocksn Flat-bladed screwdrivern Tool kitincludes connector removal tool, loopback plugs, and case utility tool4.2 Service ConsiderationsThe following sections include some of the considerations that you should keep in mind during disassembly and assembly procedures..As you remove each subassembly from the notebook, place the subassembly (and all accompanying screws) away from the work area to prevent damage.