From behind the body, remove the Five screws
retaining the rear panel.
Open the Battery door, then remove One Screw
retaining in the battery compartment
Then remove the Two screws
retaining the bottom of rear panel.
Take out the rear panel from the body. And disconnect the CN302 on the main board
Be careful of the FM antenna white wire, it is connection with the tuner PCB up side.
You can directly take out from the tuner PCB.
When you re-assembly the product, plug the FM antenna white wire into the Tuner