Service manual

System Unit
System Unit
This section describes how to remove and replace the components of the main system unit.
Removing the Cover
WARNING
Be sure to ground yourself by touching the back panel of the
computer every time you remove the cover. If you are not properly
grounded, you could generate an electric shock when you touch a
component.
Before following these instructions, read the warnings on page 3-l.
Follow these steps to remove the computer’s cover:
1
Turn off the computer and then any peripheral devices (including the monitor and
printer).
2
Disconnect the computer’s power cable from the electrical outlet and from the back
panel if you plan to remove a major component. Also, disconnect any cables that are
connected to the computer, including the keyboard cable.
3
If the monitor is on top of the computer, lift it off and set it to one side.
4
Turn the computer around so you are facing the back panel.
5
Remove the three retaining screws securing the cover to the back panel, as shown in
Figure 3- 1.
Figure 3-1
Removing the Cover Retaining Screws
3-2 Epson NX Service Manual