A technician is preparing to replace a faulty internal M.2 Wi-Fi network card inside a mobile laptop workstation. What is the correct sequence of steps to safely remove the old Wi-Fi module?
- 1Shut down the laptop, disconnect the AC power adapter, and remove or disconnect the internal battery.
- 2Put on an ESD wrist strap and attach the grounding clip to an unpainted metal surface.
- 3Unfasten the bottom access panel screws and remove the enclosure cover to expose the system board.
- 4Disconnect the main and auxiliary coaxial antenna cables from the micro-connectors on the Wi-Fi card.
- 5Remove the card retaining screw and pull the Wi-Fi module out of the M.2 slot at a slight angle.
Answer
The correct sequence of steps is: 1) Shut down power sources and disconnect battery, 2) Put on an ESD wrist strap, 3) Remove bottom cover panel, 4) Disconnect coaxial antenna wires, and 5) Remove the retaining screw and extract the card from the M.2 slot.
The correct sequence prioritizes electrical safety (disconnecting power and battery), ESD safety (attaching a wrist strap), chassis access (removing the bottom cover), component preparation (disconnecting antenna leads), and final physical extraction (removing the retaining screw and sliding out the card).
Step-by-Step Solution
Key Concept
Disassembly procedure order and ESD/power safety protocols for laptop internal expansion modules.