9. Lift the power supply out of the computer.
Installing the Power Supply
1. Place the power supply in the chassis and slide towards the back of the
computer to secure it.
2. Tighten the screws securing the power supply to the back of the computer.
3. Connect the 4-pin power cable to the system board.
4. Connect the 24-pin power cable to the system board.
5. Thread the power cables into the chassis clips.
6. Connect the power cables connected to the hard drives(s) and optical
drive(s).
7. Install the
cover
.
8. Follow the procedures in
After Working Inside Your Computer
.
49
Summary of Contents for OptiPlex 390 Mini-Tower
Page 1: ...Dell OptiPlex 390 Mini Tower Owner s Manual Regulatory Model D12M Regulatory Type D12M001 ...
Page 6: ...6 ...
Page 10: ...10 ...
Page 12: ...12 ...
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Page 32: ...32 ...
Page 38: ...38 ...
Page 46: ...46 ...
Page 50: ...50 ...
Page 52: ...7 Remove the screws that secure the system board to the computer 52 ...
Page 53: ...8 Slide the system board towards the front of the computer 53 ...
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