Dell Inspiron 1420, Руководство пользователя

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108
Troubleshooting
Keyboard Problems
CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions in the Product Information Guide .
Fill out the "Diagnostics Checklist" on page 165 as you perform the
various checks.
NOTE:
Use the integrated keyboard when running the Dell Diagnostics or the
system setup program. When you attach an external keyboard, the integrated
keyboard remains fully functional.
External Keyboard problems
NOTE:
When you attach an external keyboard, the integrated keyboard remains
fully functional.
C
HECK THE KEYBOARD CABLE
—
Shut down the computer, disconnect the
keyboard cable and check it for damage, then firmly reconnect the cable.
If you are using a keyboard extension cable, disconnect it and connect the
keyboard directly to the computer.
C HECK THE EXTERNAL KEYBOARD —
1
Shut down the computer, wait 1 minute, and then turn it on again.
2
Verify that the numbers, capitals, and scroll lock lights on the keyboard
blink during the boot routine.
3
From the Windows desktop, click Start
→
All Programs
→
Accessories
→
Notepad .
4
Type some characters on the external keyboard and verify that they appear
on the display.
If you cannot verify these steps, you may have a defective external
keyboard.
T O VERIFY THAT THE PROBLEM IS WITH THE EXTERNAL KEYBOARD , CHECK THE
INTEGRATED KEYBOARD —
1
Shut down the computer.
2
Disconnect the external keyboard.
3
Turn on the computer.