Dell Inspiron 1721, Руководство пользователя

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Troubleshooting
115
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.
4
From the Windows desktop, click Start
→
All Programs
→
Accessories
→
Notepad .
5
Type some characters on the internal keyboard and verify that they appear
on the display.
If the characters appear now, but did not with the external keyboard, you
may have a defective external keyboard. Contact Dell
(see "Contacting
Dell " on page 175 ).
R UN THE KEYBOARD DIAGNOSTICS TESTS —
Run the PC-AT Compatible
Keyboards tests in the Dell Diagnostics (see "Dell Diagnostics" on page 97). If
the tests indicate a defective external keyboard, contact Dell (see "Contacting
Dell" on page 175).
Unexpected characters
D ISABLE THE NUMERIC KEYPAD —
Press <Num Lk> to disable the numeric
keypad if numbers are displayed instead of letters. Verify that the numbers
lock light is not lit.