A field technician is tasked with replacing a swollen internal lithium-ion battery in an enterprise ultra-thin laptop. In what chronological sequence should the technician perform the following maintenance steps to ensure physical safety and protect internal circuitry from electrical damage?
- 1Perform a complete operating system shutdown and disconnect the external AC power adapter.
- 2Place the laptop on an anti-static mat and attach an ESD grounding wrist strap.
- 3Remove the retaining screws from the lower chassis cover and carefully detach the base panel.
- 4Disconnect the internal battery cable connector from the motherboard header.
- 5Unscrew the battery mounting bracket, swap the faulty unit, and reconnect the battery power cable.
Cevap
The correct chronological order is: 1) Perform complete OS shutdown and disconnect AC power, 2) Establish ESD grounding protection, 3) Remove bottom chassis screws and base panel, 4) Disconnect internal battery cable from the motherboard header, 5) Unscrew, swap the battery unit, and reconnect power.
The repair process must strictly follow electrical safety and ESD prevention standards: shut down and disconnect AC power first, ground the technician, remove the base panel to expose hardware, disconnect internal power from the motherboard header to prevent accidental shorts, and finally swap out the component.
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Anahtar Kavram
Servicing non-removable internal laptop hardware requires isolating external power, establishing ESD protection, removing exterior panels, disconnecting internal battery power from the motherboard header, and executing physical component replacement.