Dell OptiPlex 7480 All-In-One Service Manual page 67

Steps
1. Align the screw holes on the system board with the screw holes on the display-assembly base.
2. Replace the nine screws (M3x5) to secure the system board to the display-assembly base.
3. Connect the camera cable to the connector system board.
4. Connect the touchscreen cable to the system board.
5. Connect the system fan cable to the system board.
6. Connect the audio-board cable to the system board.
7. Connect the SIO-power cable to the system board.
8. Connect the SIO-signal cable to the system board.
9. Connect the microphone-module cable to the system board.
10. Connect the speaker cable to the system board.
11. Connect the power-button board cable to the system board and close the latch to secure the cable.
12. Connect the PSU-fan cable to the system board.
13. Connect the PSU cable to the system board.
14. Connect the display cable to the system board.
15. Connect the display back-light cable to the system board.
Next steps
1. Install the rear-I/O bracket.
2. Install the bottom cover.
3. Install the coin-cell battery.
4. Install the processor.
5. Install the heat sink.
6. Install the M.2 2280 solid-state drive/Intel Optane memory
7. Install the M.2 2230 solid-state
8. Install the wireless card.
9. Install the memory modules.
10. Install the system-board
11. Install the hard drive.
12. Install the back cover.
13. Install the cable cover (optional).
14. Install the stand.
15. Follow the procedure in
drive.
shield.
After working inside your computer.
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Removing and installing components 67