4. Remove the WWAN module (3) by pulling the module away from the slot at an angle.
NOTE: WWAN modules are designed with a notch (4) to prevent incorrect insertion.
Reverse this procedure to install the WWAN module.
Palm rest
Description Spare part number
Palm rest for use in black computers with 15-in displays (includes TouchPad) 535868-001
Palm rest for use in red computers with 15-in displays (includes TouchPad) 572728-001
Palm rest for use in black computers with 14-in displays (includes TouchPad) 535867-001
Palm rest for use in red computers with 14-in displays (includes TouchPad) 572727-001
Before removing the palm rest, follow these steps:
1. Shut down 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 all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and
then unplugging the AC adapter from the computer.
4. Remove the battery (see
Battery on page 58).
5. Remove the switch cover and keyboard (see
Switch cover and keyboard on page 59)
Remove the palm rest:
1. Position the computer right-side up with the front toward you.
Component replacement procedures 69
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