- Notes, cautions, and warnings
- Before working inside your computer
- After working inside your computer
- Technical overview
- Removing the right-side cover
- Replacing the right-side cover
- Removing the front bezel
- Replacing the front bezel
- Removing the optical drive
- Replacing the optical drive
- Removing the top cover
- Replacing the top cover
- Removing the bottom cover
- Replacing the bottom cover
- Removing the primary hard-drive
- Replacing the primary hard-drive
- Removing the secondary hard-drive
- Replacing the secondary hard-drive
- Removing the solid-state drive
- Replacing the solid-state drive
- Removing the power-supply unit
- Replacing the power-supply unit
- Removing the coin-cell battery
- Replacing the coin-cell battery
- Removing the graphics card
- Replacing the graphics card
- Removing the full-length graphics cards
- Replacing the full-length graphics cards
- Removing the memory modules
- Replacing the memory modules
- Removing the power-button module
- Replacing the power-button module
- Removing the top I/O-panel
- Replacing the top I/O-panel
- Removing blower and heat-sink assembly
- Replacing blower and heat-sink assembly
- Removing the VR heat sink
- Replacing the VR heat sink
- Removing the processor fan and heat-sink assembly
- Replacing the processor fan and heat-sink assembly
- Removing the chassis fan
- Replacing the chassis fan
- Removing the processor
- Replacing the processor
- Removing the wireless card
- Replacing the wireless card
- Removing the antennas
- Replacing the antennas
- Removing the system board
- Replacing the system board
- Downloading drivers
- System setup
- Troubleshooting
- Getting help and contacting Dell
XPS 8930 Service Manual
Steps to confirm that power-supply unit is defective
- Disconnect the power cord from the power-supply
unit.
CAUTION Ensure that you take adequate safety precautions before accessing the components on your computer. See the removing and replacing instructions in the service manual for procedure to access the power-supply unit and its cables.
- Disconnect the power-supply unit cables from the system board.
- Connect the power cord to the power-supply unit.
- If the LED is on for 3 seconds and turns off, it indicates that the power-supply unit is functional. Continue with troubleshooting steps for other devices.
- If the LED does not turn on, it indicates a power-supply unit failure. Replace the power-supply unit only.
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