#1단계의 변경 사항
단계 라인
| [* red] Unscrew all of the screws marked on the underside of the laptop | |
| [* yellow] Remove the screw marked in the second photo by lifting up the lid and unscrewing using a Phillips head screwdriver | |
| - | [* blue] |
| + | [* blue] Remove the three flat screws in the port where the Optical drive is housed in |