#21단계의 변경 사항
단계 라인
| [* black] Remove the following nine screws securing the logic board to the midplane: |
| [* red] Six 7 mm T10 Torx. [* orange] Three long 20 mm brass coarse-thread Phillips. |
| [* red] Six 7 mm T10 Torx. [* orange] Three long 20 mm brass coarse-thread Phillips. |