Gateway E-420, Maintaining & Troubleshooting

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System Components 61
3.
Disconnect all power supply cables from internal devices, including
the main power supply connection to the system board.
4.
Remove the four screws on the back of the chassis that attach the
power supply to the chassis.
5.
Lift the power supply out of the chassis.
6.
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.
7.
Line up the holes in the new power supply with the screw holes in the
back of the chassis.
8.
Replace the four screws on the back of the chassis that attach the
power supply to the chassis.
9.
Reconnect the power supply cables.
10.
Replace the system cover (see “Replacing the desktop case cover” on
page 9 for instructions). Plug in the power cord and turn on the
computer.
Important!
To remove and install the
power supply, you need a
grounding wrist strap and a
Phillips screwdriver.