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4.
Disconnect the power button board (4) from the power button board cable.
Reverse this procedure to install the power button board.
WLAN ribbon cable
NOTE: The WLAN ribbon cable is included in the Cable Kit, spare part number 709459-001.
Before removing the WLAN ribbon cable, follow these steps:
1. Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the display assembly (see
Display assembly on page 26).
5. Remove the system board (see
System board on page 42).
Remove the WLAN ribbon cable:
1. Remove the protective pad (1) that covers the WLAN ribbon cable tape.
2. Release the tape (2) that secures the WLAN ribbon cable to the system board.
52 Chapter 4 Removal and replacement procedures