Sony Xperia M2 – Disassembling procedure – How to replace the mother board
Warm the Back Cover. You can use a hairdryer.
Be careful, the Cover is plastic.
Use a small suction cup and plastic tools for separating the Rear panel.
Before installing the new cover, you must clean the phone from the old adhesive tape and install a new one if your spare part has come without double sided adhesive tape.
Disconnect the Battery Cable.
The battery is stuck to the phone fame. Use the white tape to remove it.
Li-Polymer Battery, 2230 mAh
Part number: LIS1551ERPC
Remove the SIM and the memory cards.
Remove x4 T5 Torx Corner screws & x2 T5 Torx Screws on the Board
Disconnect one by one:
Touchscreen flex cable
Proximity sensor flex cable
Power on, Volume buttons cable
SIM & Micro SD flex cable
Coaxial antenna cable
Disconnect the LCD Display flex cable. The connector is on the other side of the board, under the Power/Volume buttons flex cable connector.
Put one plastic spudger between the Logic board and the Main frame.
Step one: move aside less the left side of the board - down.
Step two: the left side of the Logic board must go out of the main frame.
For this use only plastic tools.