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7.
Use a Phillips-head screwdriver to remove 6 screws to unlock
the bracket chassis module from the panel module, then
lift up the bracket chassis module and put it on a protective
cushion.
8.
Use a Phillips-head screwdriver to remove 3 screws to unlock
the left small iron bracket; then remove 3 more screws to
unlock the right bracket.
9.
Use a Phillips-head screwdriver to remove 6 screws to
unlock the audio and interface board. Release the cables
from the hooks of the bracket and then put the audio board
and interface board on a protective cushion. Disconnect all
cables.