Epson NX User Manual - Page 40
Keyboard Problems, No Keyboard Response
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Troubleshooting Keyboard Problems If there is a problem with the computer's keyboard, see the suggestions below: Figure 2-2 Keyboard Problems No Keyboard Response If the computer boots properly but does not respond when you type, follow these suggestions: 1 Make sure the keyboard cable is securely connected to the keyboard port and not the mouse port. 2 Check the keyboard cable connector for any bent or missing pins. If necessary, repair the connector or replace the cable. 3 Replace the keyboard unit. The internal circuit board may be faulty. 4 Replace the keyboard controller. The controller may be faulty. 5 Check the continuity of fuse Fl (1A @ 125V) on the system board and replace it if blown. 6 Replace the system board. Epson NX Service Manual 2 4