8. Release the ZIF connector to which the pointing stick cable is attached, and then disconnect the
cable (4) from the keyboard.
9. Remove the keyboard.
Reverse this procedure to install the keyboard.
Secondary memory module
Description Spare part number
1 GB (PC3-10600, 1333 MHz, DDR3) 639738-001
2 GB (PC3-10600, 1333 MHz, DDR3) 621565-001
4 GB (PC3-10600, 1333 MHz, DDR3) 621569-001
8 GB (PC3-10600, 1333 MHz, DDR3) 634091-001
Before removing the 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 following components:
a. Remove the battery (see
Battery on page 41)
b. Service access cover (see
Service access cover on page 42)
c. Remove the keyboard (see
Keyboard on page 53)
56 Chapter 4 Removal and replacement procedures
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