This 3D experience gives you the step by step process of replacing the Audio board and a Latitude 3120. The procedure will also include removing the Palmrest and Keyboard Assembly, Speaker and reinstalling them.
Removal
Palmrest and Keyboard Assembly
Identify the palmrest and keyboard assembly highlighted in blue.
Loosen the captive screws that secure the palmrest assembly.
Place the system on a flat surface with the keyboard facing up. Open the system to 180 degrees.
Use a plastic scribe, pry from the U-shaped recesses near the hinges at the top edge.
Use the scribe to pry open the top, left, and right sides of the palmrest.
Gently flip over the palmrest assembly.
Disconnect the battery cable, lift the latch and disconnect keyboard and touchpad cables.
Lift and remove the palmrest assembly and keyboard from the computer chassis.
Speaker
Audio board
Identify the audio board highlighted in blue.
Disconnect the audio board cable and unroute the cable. Note the cable routing.
Remove the screws that secure the audio board to the computer chassis.
Lift and remove the audio board from the computer chassis.
Install
Audio board
Identify the audio board location highlighted in blue.
Using the alignment posts, install the audio board into the slot on the system.
Install the screws that secure the audio board to the computer chassis.
Connect the audio cable to the system board. Route the cable along the guides.
Speaker
Palmrest and Keyboard Assembly
Identify the palmrest and keyboard assembly location highlighted in blue.
Connect the battery cable keyboard and touchpad cables.Close the latch to secure.
Gently flip over the palmrest assembly with the keyboard facing downward.
Align the palmrest and press until it clicks into place.
Close the display assembly and position the system as shown.
Tighten the captive screws that secure the palmrest assembly.