Sharp C6400U Service Manual page 29

LC-52/60/70LE640U/C6400U,LC-80LE633U/844U (1st Edition)
2. Removing of Speaker (L/R), KEY Unit and Bottom Cover.
1. Detach the Speaker (L) , Speaker (R) .
2. Disconnect the SP wire.
3. Disconnect the RC wire.
4. Detach the KEY Unit Ass'y .
5. Disconnect the KM wire.
6. Remove the 2 lock screws and detach the Key Button from Key Button Cover .
7. Detach the KEY Unit from Key Button .
8. Remove the 4 Hooks and detach the 2 Bottom Cover .
4 – 10