- Notes, cautions, and warnings
- Working on your computer
- Technology and components
- Major components of your system
- Disassembly and reassembly
- Chassis rubber feet
- Cover
- SD card—optional
- Bezel
- Hard drive
- PSU hinge
- Graphics card
- Memory module
- Speaker
- Coin cell battery
- Power supply unit
- Optical drive
- IO panel
- Solid state drive
- Power button module
- Heatsink assembly
- Blower and heat sink assembly
- Voltage regulator heat sink
- Front fan
- System fan
- Optional IO card
- Processor
- Intrusion switch
- System board
- Troubleshooting
- Getting help
- Cable cover
- Dust filter
Precision 3630 Tower 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 and other components.
- Press the PSU BIST button.
- If the LED turns on and remains on while the BIST button is pressed, 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.
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