HP Dv71270us Service Guide - Page 72

3. Remove the WLAN module (3) by pulling it away from the slot at an angle. NOTE: WLAN modules are designed with a notch (4) to prevent incorrect insertion into the WLAN module slot. Reverse this procedure to install a WLAN module. Memory module Description 2048-MB memory module (667-MHz, PC2-6400, 1-DIMM) 1024-MB memory module (667-MHz, PC2-6400, 1-DIMM) 512-MB memory module (667-MHz, PC2-6400, 1-DIMM) Spare part number 480382-001 480381-001 480380-001 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 battery (see Battery on page 51). 5. Remove the accessory cover (see Hard drive on page 56). Remove the memory module: 1. Spread the retaining tabs (1) on each side of the memory module slot to release the memory module. (The edge of the module opposite the slot rises away from the computer.) 64 Chapter 4 Removal and replacement procedures