Procedure..........................................................................................................................................................................4824 Replacing the heat sink..............................................................................................................................50Procedure......................................................................................................................................................................... 50Post-requisites................................................................................................................................................................. 5025 Removing the system-board assembly....................................................................................................... 51Prerequisites...................................................................................................................................................................... 51Procedure.......................................................................................................................................................................... 5126 Replacing the system-board assembly....................................................................................................... 54Procedure..........................................................................................................................................................................54Post-requisites..................................................................................................................................................................5427 Removing the audio daughter-board.......................................................................................................... 55Prerequisites..................................................................................................................................................................... 55Procedure......................................................................................................................................................................... 5528 Replacing the audio daughter-board.......................................................................................................... 57Procedure..........................................................................................................................................................................57Post-requisites..................................................................................................................................................................5729 Removing the coin-cell battery..................................................................................................................58Prerequisites..................................................................................................................................................................... 58Procedure......................................................................................................................................................................... 5830 Replacing the coin-cell battery.................................................................................................................. 60Procedure......................................................................................................................................................................... 60Post-requisites................................................................................................................................................................. 6031 Removing the keyboard...............................................................................................................................61Prerequisites......................................................................................................................................................................61Procedure.......................................................................................................................................................................... 6132 Replacing the keyboard............................................................................................................................. 64Procedure..........................................................................................................................................................................64Post-requisites..................................................................................................................................................................6433 Removing the power-button module..........................................................................................................65Prerequisites..................................................................................................................................................................... 65Procedure......................................................................................................................................................................... 6534 Replacing the power-button module.......................................................................................................... 67Procedure..........................................................................................................................................................................67Post-requisites..................................................................................................................................................................6735 Removing the fingerprint reader daughter-board (optional).......................................................................68Prerequisites..................................................................................................................................................................... 68Contents 5