Acer AT4230C Service Manual page 24

10. Disconnect and remove all the cables on the power board and main board and I/O board.
11. Then release the eight screws securing the power board and remove the power board.
12. Release the five screws holding the main board and the I/O board. Then remove the main board and the power
board altogether.
13. Release the four screws fastening the right speaker. Disconnect the right speaker cable then remove the right
speaker.
14. Release the four screws holding the left speaker. Disconnect the left speaker cable then remove the left
speaker.
Chapter 2 18