Procedure
NOTE: Note the routing of all cables as you remove them so that you can
reroute them correctly after you replace the system board. For information
on system board connectors, see “System board components’.
1 Remove the screw (#6-32xL6.35) that secures the front I/O bracket to the
chassis.
2 Swivel open the front I/O bracket from the Chassis.
3 Disconnect the optical-drive data cable from the system board.
4 Disconnect the power-supply unit cable from the system board.
5 Disconnect the hard-drive data cable from the system board.
6 Disconnect the hard-drive data cable from the system board.
7 Disconnect the hard-drive and optical drive power cable from the system board.
8 Disconnect the chassis-fan cable from the system board.
9 Disconnect the power-button cable from the system board.
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