Acer AT4250B Service Manual page 25

5. Release 6pcs screws from HDMI and IO joint.
6. Release 6pcs screws from PCB shielding.
8. Release 8pcs screws from left and right speakers.
9. Release 2pcs screws from IR/B.
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7. Release 8pcs screws from PCB shielding.
10. Release 3pcs screws from Keypad/B.
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