Replacing The System Board - Dell OptiPlex 160 Service Manual

8. Disconnect the I/O board cables from the system board.
9. Disconnect the 12V power supply connector from the system board (see
10. Remove the cable guide (see
11. Remove the two screws on the back corners of the system board that secure it to the chassis.
1 cable guide retaining screw
NOTE: When removing the system board from the chassis, the thermal gap pad between the chassis and the processor may not allow the system board
to lift out freely. You may have to break the bond between the gap pad and the bottom of the system board. Keep the gap pad with the chassis.
12. Carefully lift the front edge of the system board remove the board from the chassis.
Replacing the System Board
1. Move the system board into the chassis at about a 30-degree angle, aligning the connectors on the back edge of the board with the cutouts on the
back panel, then lower the system board into place.
2. Replace the cable guide (see
3. Replace the two screws on the back corners of the system board that secure it to the chassis (see
4. Connect the 12V power supply connector to the system board.
5. Replace the I/O board (see
6. Connect the I/O board cables to the system board.
7. Replace the cable guide (see
8. Replace the memory module(s) (see
9. Replace the wireless card if it was removed (see
Removing the Cable Guide).
2 system board retaining screw (2)
Replacing the Cable Guide).
Replacing the I/O Board).
Replacing the Cable Guide)
Replacing a Memory Module).
Replacing the Wireless
System Board Connectors).
System Board
Card).
Connectors).