Dell Alienware 17 R4 Service Manual - Page 39
Open the latch and disconnect the touch-pad cable from the system board.
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8. Disconnect the coin-cell battery cable from the system board. 9. Peel off the tape that secures the coin-cell battery cable to the system board. 10. Disconnect the power-adapter port cable from the system board. 11. Disconnect the speaker cable from the system board. 12. Lift the latch and disconnect the macro-keys backlight cable from the system board. 13. Lift the latch and disconnect the keyboard-backlight cable from the system board. 14. Lift the latch and disconnect the macro-keys cable from the system board. 15. Peel the tape that secures the I/O-board cable to the I/O board. 16. Open the latch and disconnect the I/O-board cable from the I/O board. 17. Open the latch and disconnect the keyboard cable from the system board. 18. Open the latch and disconnect the touch-pad cable from the system board. 19. Remove the screw (M2.5x5) that secures the USB Type-C port bracket to the system board and lift the USB Type-C port bracket off the system board. 20.Remove the seven screws (M2.5x5) that secure the system-board assembly to the palm-rest assembly. 21. Lift the system-board assembly off the palm-rest assembly. 39