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1. Set the replacement power supply into place.
2. Replace and tighten the screws that secure the power supply to the back of the computer chassis.
3. Reconnect the DC power cables to the system board and drives.
4. For the Vostro 220s:
a. Reinstall any PCI or PCI Express cards (see Installing a PCI or PCI Express Card).
b. Slide the optical drive back into the drive bay.
c. Replace the chassis support bracket (see Replacing the Chassis Support Bracket).
5. Follow the procedure in After Working on Your Computer.
DC Power Supply Connectors
Vostro 420
CAUTION: Failure to replace and tighten all screws may cause electrical shock as these screws are a key part of the grounding system.
NOTICE: Route the DC power cables as you insert them into the routing clips (if present). The cables must be properly routed to prevent the cables
from being damaged.
NOTE: Double-check all cable connections to ensure that they are secure.