Reverse this procedure to install the speakers.
Memory modules
Description Spare part number
4-GB memory module (PC3L, 12800, 1600-MHz) 691740-005
8-GB memory module (PC3L, 12800, 1600-MHz) 693374-005
Before removing a memory module, 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 37),
5. Remove the optical drive (see
Optical drive on page 38).
6. Remove the top cover from the base enclosure (see
Base enclosure on page 41).
7. Remove the WLAN module (see
WLAN module on page 55).
8. Remove the subwoofer (see
Subwoofer on page 60).
9. Remove the system board (see
System board on page 63).
Remove the memory module:
1. Turn the system board over.
2. Spread the retaining tabs (1) on each side of the memory module slot to release the memory module.
(The memory module tilts up.)
CAUTION: To prevent damage to the memory module, hold it by the edges only. Do not touch the
components on the memory module.
3. Slide the memory module forward (2) to remove it.
Reverse this procedure to install a memory module.
70 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts