Below the battery pack, there are two lock mechanisms. Push EACH lock to the LEFT until it makes a click noise. Lift the battery from the bottom up and remove.
To disconnect the left ribbon cable from the motherboard, place the flat end of your spudger under the edge of the pop connector and pry the connector straight up.
The two ribbon cables connect the keyboard attachment ports to the motherboard. Damage to either cables can induce problems with the Dell mobile keyboard.
There are adhesive strips between the device and the two ribbon cables we disconnected. Pull each cable away from the device just enough to break the adhesive bonds.
This is the tablet with its mini HDMI, speakers, and USB port removed. If you only want to replace your motherboard then all previous components will be disconnected from the board but will remain on the tablet.
You must first disconnect the ribbon cable highlighted here.
Now turn your attention to the two ZIF connectors at the top. The left ribbon cable connects to the webcam, the right ribbon cable connects to the back camera.
To remove the right ribbon cable, use the pointy end of your spudger to flip the black ZIF lock upwards. Then pull the ribbon cable rearwards to disconnect it.
To remove the left ribbon cable, use the pointy end of your spudger to flip the black ZIF retainer into the up position. Then simply pull it rearwards to remove it.