Gateway E-420, Maintaining & Troubleshooting

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64 Maintaining and Troubleshooting Your E-4200 System
5.
Remove the four screws on the back of the chassis that attach the
power supply to the chassis.
6.
Support the power supply with your hand and remove the two screws
on the side of the chassis that attach the power supply.
7.
Lift the power supply out of the chassis.
8.
Check the red voltage switch on the back of the new power supply. Be
sure it is set to the correct voltage for your area.
9.
Line up the holes in the new power supply with the screw holes in the
back of the chassis.
10.
Replace the four screws on the back of the chassis and the two screws
on the side of the chassis.
11.
Replace the fan duct.
12.
Reconnect the power supply cables.
13.
Replace the system cover (see “Replacing the tower case cover” on
page 11 for instructions). Plug in the power cord and turn on the
computer.
If the system does not work correctly, make sure that you installed the
power supply correctly and connected the power supply cable to the power
connector on the system board. Check that the voltage selector on the back
of the power supply is set correctly.