Acer AT3220B Service Manual page 50

Disassembling Steps
1. Remove the six screws fastening the stand to the LCD TV, then remove the stand.
2. Remove the twenty screws (10 are T4*12 highlighted in red; 2 are M4*8 highlighted in yellow) holding the
back cover then remove the back cover carefully.
3. To remove the EMI shielding, you should remove 11 screws holding the EMI shielding. First remove two
screws on the left side as shown.
4. Remove three screws holding the EMI shielding as shown.
5. Remove two screws holding the EMI shielding on the right side as shown.
6. Remove four screws holding the EMI shielding then remove the EMI shielding.
7. Remove the 10 screws (M3*6) fastening main board and the IO board.
8. Remove the six screws (M3*6) and four screw nuts (highlighted in yellow) holding the main board, IO
board and the PCB holder. (Note: This step is for AT3220A)
9. Remove the six screws (M3*6) and two screw nuts (highlighted in yellow) holding the main board and the
IO board. Then carefully detach the main board and the IO board from the main unit. (Note: This step is
for AT3220B)
10. Remove the screw holding the power board ground cable and remove two screws (indicating by the red
arrows) fastening the switch bracket. Then remove the switch bracket.
11. Remove four screws fastening the power board as show then detach the power board.
12. Remove four screws holding the PCB holder and two screws (highlighted in yellow) fastening the cables,
then detach the PCB holder from the LCD TV.
13. Remove the six screws fastening the power support bracket and remove the bracket.
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