
6.
Connect the system fan assembly cable to the system fan connector on the
system board.
7.
Go to “Completing the FRU replacement” on page 160.
Replacing the front audio/USB assembly
1.
Remove the computer cover. See “Removing the cover” on page 129.
2.
Remove the front bezel. See “Removing and replacing the front bezel” on
page 133
3.
Disconnect the front audio/USB assembly cable from the system board. See
the system board illustration for your machine type at “Identifying parts on
the system board” on page 130.
4.
Note the front audio/USB assembly cable routing and remove the screw that
secures the assembly to the chassis.
5.
Remove the front audio/USB assembly.
6.
Route the cable for the new front audio/USB assembly through the hole in the
chassis and to the system board.
7.
Install the front audio/USB assembly into the chassis and secure it with the
screw.
8.
Connect the front audio/USB assembly cable to the system board.
9.
Reinstall the front bezel.
10.
Go to “Completing the FRU replacement” on page 160.
Replacing the power switch/LED assembly
1.
Remove the computer cover. See “Removing the cover” on page 129.
2.
Remove the front bezel. See “Removing and replacing the front bezel” on
page 133
3.
Disconnect the power switch/LED assembly cable from the system board. See
the system board illustration for your machine type at “Identifying parts on
the system board” on page 130.
4.
Note the power switch/LED assembly cable routing and the position of the
two LEDs.
5.
Remove the switch and the LEDs from the bezel.
6.
Route the cable for the new power switch/LED assembly through the hole in
the chassis and to the system board.
7.
Install the new power switch/LED assembly into the bezel. Make sure that the
LEDs are in the correct position.
8.
Connect the power switch/LED cable to the system board.
9.
Reinstall the front bezel.
10.
Go to “Completing the FRU replacement” on page 160.
Replacing the CMOS battery
If the CMOS battery fails, the date, time, and configuration information (including
passwords) are lost. An error message is displayed when you turn on the
computer.
Chapter 9. Replacing FRUs (tower computers)
159
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