Dell Latitude C600 User Manual page 116

Use the integrated
keyboard:
when working
in MS-DOS
mode
when running
the Dell
Diagnostics
when using the
system setup
program
Do not use external
Universal Serial Bus
(USB) keyboards with
Windows NT
Devices Attached Basic Checks for All Devices:
to Serial or
Parallel Ports
Don't Work
and go to step 2. If they cannot be straightened, or are broken, you need a
new keyboard.
No. Go to step 2.
2. Reconnect the keyboard to the computer.
3. Make sure the cable from the external keyboard is firmly connected to the
keyboard/mouse connector on the back of the computer.
4. Turn on the computer.
5. If you are using a keyboard that can be configured with various switch settings,
make sure the switch is set to PS/2, Enhanced XT/AT, or PC/AT.
The switch settings are usually on the bottom of the keyboard, sometimes
behind a panel tab. Refer to the documentation that came with the
keyboard for more information.
6. Turn off the computer, wait one minute, and then turn it on again. During the
boot routine, do the Num Lock, Caps Lock, and Scroll Lock lights on the
external keyboard blink momentarily?
Yes. Go to step 7.
No. You may have a defective keyboard. Go to step 10.
7. Does the computer recognize the external keyboard?
Use the external keyboard to type some characters. Do they appear on
the display?
Yes. The problem is resolved.
No. Go to step 8.
8. Turn off the computer and disconnect the external keyboard from the computer.
9. Turn on the computer. Does the computer recognize the integrated keyboard?
Allow one minute for the computer to initialize its components. Then use
the computer's integrated keyboard to type some characters. Do the
characters appear on the display?
Yes. The external keyboard may be defective. Run the PC-AT
Compatible Keyboards device group in the
cannot isolate the problem after running the diagnostics,
technical assistance.
No. Go to step 10.
10. Call Dell for technical assistance.
Make sure that the device's cable is firmly connected to its connector on the
computer.
Dell Diagnostics. If you
call Dell for