A technician is preparing a workstation to replace an internal expansion card while adhering to proper electrostatic discharge (ESD) safety controls. Place the operational steps in the correct sequential order from first to last.
- 1Disconnect all external power cords and cabling from the computer chassis.
- 2Position an anti-static mat on the work surface and connect its grounding wire to an approved ground point.
- 3Attach the anti-static wrist strap around the wrist and connect its cord to the grounded ESD mat.
- 4Open the computer case and remove the internal expansion card.
Cevap
The correct sequence begins with disconnecting all power and cabling from the computer, followed by positioning and grounding the anti-static mat, then putting on and attaching the anti-static wrist strap to the grounded mat, and finally opening the computer case to replace the card.
Establishing proper ESD safety procedures requires isolating power sources first, preparing and grounding the anti-static work mat second, securing personal ESD wrist grounding third, and performing internal hardware manipulation last.
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Proper sequencing of ESD protection controls during hardware maintenance
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