Gateway E-420, Maintaining & Troubleshooting, Page: 73 / 108

62 Maintaining and Troubleshooting Your E-4200 System
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
connector on the back of the power supply is set correctly.
1.
Turn off the system and unplug the power cord.
2.
Open the case, as described in Chapter 1. Observe the “Static
electricity precautions” on page 2.
3.
Disconnect all power supply cables from internal devices, including
the main power supply connection to the system board.
4.
Remove the fan duct (see page 24 for more information on removing
the duct).
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 screw inside
the chassis that attaches the power supply.
Installing a power supply in your mid-tower computer
Important!
To remove and install the
power supply, you need a
grounding wrist strap and a
Phillips screwdriver.