Power Supply; Removing The Power Supply - Dell OptiPlex 990 Desktop Service Manual

Power Supply

Removing The Power Supply

1. Follow the procedures in
2. Remove the cover.
3. Remove the PSU thermal
4. Disconnect the 4–pin power cable from the system board.
5. Unthread the 4–pin power cable from the chassis clips.
6. Disconnect the 24–pin power cable from the system board.
Before Working Inside Your
sensor.
Computer.
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