Service manual

Troubleshooting Your Computer: Dell Latitude CP
No. Continue to step 4.
4. Run the Dell Diagnostics.
For instructions, see
Running the Dell Diagnostics. If you get any error messages when
running the tests, call Dell for technical assistance. (See
Getting Help, for instructions.)
Troubleshooting the Built-In Display
If the computer is receiving power, but nothing appears on your display (such as light, text, or
graphics) or the display image does not appear as you would expect, make a copy of the
Diagnostics Checklist found in
Getting Help and fill it out as you complete the following
procedure.
NOTES: The highest video resolution supported by the built-in display on the Dell Latitude
CP M133ST, M166ST, and M233ST is 800 x 600 pixels. The highest resolution supported by
the built-in display on the Dell Latitude CP M233XT is 1024 x 768 pixels. If your application
program requires a higher resolution, attach an external monitor to the computer.
1. Press the <Fn><F8> key combination several times. Does an image appear on the built-
in display?
Yes. The video image was being sent to an external monitor. The problem is resolved.
No. Go to step 2.
2. If the computer is running, press the power button to exit suspend mode or to deactivate
the display. Is the full display readable?
Yes. The computer was in suspend mode, or the display time-out feature was activated.
The problem is resolved.
No. Continue to step 3.
3. If the computer is running, is the battery indicator showing a steady amber light?
Yes. The display turns off when the final low-battery warning occurs. Replace the
battery or connect the computer to alternating current (AC) power through the AC
adapter. Press the power button. If the display is still not readable, continue to step 4.
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