Acer Aspire M3920 Service Guide - Page 29

System Disassembly Chapter 3 This chapter contains step-by-step procedures on how to disassemble the desktop computer for maintenance and troubleshooting. Disassembly Requirements To disassemble the computer, you need the following tools: • Wrist grounding strap and conductive mat for preventing electrostatic discharge • Flat-blade screwdriver • Philips screwdriver • Hex screwdriver • Plastic flat-blade screwdriver • Plastic tweezers NOTE: The screws for the different components vary in size. During the disassembly process, group the screws with the corresponding components to avoid mismatch when putting back the components. Pre-disassembly Procedure Before proceeding with the disassembly procedure, perform the steps listed below: 1. Turn off the system and all the peripherals connected to it. 2. Unplug the power cord from the power outlets. 3. Unplug the power cord from the system. 4. Unplug all peripheral cables from the system. 5. Place the system unit on a flat, stable surface. Chapter 3 21