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Turn the display assembly over and replace the two screws that secure the 6. display back cover door to the display assembly. Replace the display assembly (see “Replacing the Display Assembly” on 7. page 56). Replace the magnesium cover (see “Replacing the Magnesium Cover” on 8. page 52). Replace the left and right brackets (see “Replacing the Brackets” on page 9. 47). Replace the palm rest (see “Replacing the Palm Rest” on page 10. 44). Replace the keyboard (see “Replacing the Keyboard” on page 11. 39). Replace the center control cover (see “Replacing the Center Control Cover” 12. on page 35). Replace the compartment door (see “Replacing the Compartment Door” on 13. page 14). Replace the battery pack (see “Replacing the Battery Pack” on page 14. 11). CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer. AlienHead Board Removing the AlienHead Board Follow the instructions in “Before You Begin” on page 1. 6. Remove the battery pack (see “Removing the Battery Pack” on page 2. 11). Remove the compartment door (see “Removing the Compartment Door” on 3. page 14). Remove the center control cover (see “Removing the Center Control Cover” 4. on page 33). Remove the keyboard (see “Removing the Keyboard” on page 5. 38). Remove the palm rest (see “Removing the Palm Rest” on page 6. 42). Remove the left and right brackets (see “Removing the Brackets” on 7. page 47). Remove the magnesium cover (see “Removing the Magnesium Cover” on 8. page 50). Remove the display assembly (see “Removing the Display Assembly” on 9. page 55). Remove the display back cover (see “Removing the Display Back Cover” on 10. page 57). Turn the display back cover over.11. Remove the screw that secures the AlienHead board to the display 12. back cover. Lift the top of the AlienHead board and slide the bottom portion down to 13. detach it from the tab that holds it in place. Lift the AlienHead board off the display back cover.14. 123 1 AlienHead board 3 display back cover 2 screw Replacing the AlienHead Board Follow the instructions in “Before You Begin” on page 1. 6. Align the AlienHead board with the tabs on the display back cover. Gently 2. press and slide the AlienHead board into place. Replace the screw that secures the AlienHead board to the display back 3. cover. Replace the display back cover (see “Replacing the Display Back Cover” on 4. page 59). Replace the display assembly (see “Replacing the Display Assembly” on 5. page 56). Replace the magnesium cover (see “Replacing the Magnesium Cover” on 6. page 52). Replace the left and right brackets (see “Replacing the Brackets” on page 7. 47). Replace the palm rest (see “Replacing the Palm Rest” on page 8. 44). Replace the keyboard (see “Replacing the Keyboard” on page 9. 39). Replace the center control cover (see “Replacing the Center Control Cover” 10. on page 35). Replace the compartment door (see “Replacing the Compartment Door” on 11. page 14). Replace the battery pack (see “Replacing the Battery Pack” on page 12. 11). CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer. CHAPTER 13: INPUT/OUTPUT BOARD CHAPTER 14: INPUT/OUTPUT BOARD Input/Output Board WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as a connector on the back of the computer). CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell™ is not covered by your warranty. CAUTION: To help prevent damage to the system board, remove the main battery (see “Removing the Battery Pack” on page 11) before working inside the computer. Removing the Input/Output Board Follow the instructions in “Before You Begin” on page 1. 6. Remove the battery pack (see “Removing the Battery Pack” on page 2. 11). Remove the compartment door (see “Removing the Compartment Door” on 3. page 14). Remove the center control cover (see “Removing the Center Control Cover” 4. on page 33). Remove the keyboard (see “Removing the Keyboard” on page 5. 38). Remove the palm rest (see “Removing the Palm Rest” on page 6. 42). Remove the left and right brackets (see “Removing the Brackets” on 7. page 47). Remove the magnesium cover (see “Removing the Magnesium Cover” on 8. page 50). Release the connector latches on both ends of the ExpressCard cable and 9. remove the cable. 21 1 input/output board 2 ExpressCard cable Disconnect the speaker cable, right speaker light cable, and audio cable from 10. the respective connector...