3-24 Dell Latitude CP Reference and Troubleshooting GuideTo remove a memory module, carefully spread apartthe inner metal tabs of the memory module socket justfar enough for the memory module to disengage fromthe socket (the module should pop up slightly). Then liftthe memory module away from the socket.To reinstall a memory module, align the memorymodule’s edge connector with the slot in the centerof the memory module socket. Press the memorymodule’s edge connector firmly into the socket.Pivot the memory module down until it clicks intoplace. If you do not hear a sharp click, remove thememory module and reinstall it.NOTE: Memory modules are keyed, or designed, tofit into their sockets in only one direction. The sock-ets on the system board are notched so that thememory module can be firmly seated only one way.3. Turn on your computer, and press the key combination to open the System Setup pro-gram. Does the memory total displayed in theSystem Setup program match the actual amountof memory installed in the computer?Yes. A memory module was loose; the memorycheck phase is now OK.No. Continue to step 4.4. Run the Dell Diagnostics.For instructions, see Chapter 4, “Running the DellDiagnostics.” If you get any error messages when run-ning the tests, call Dell for technical assistance. (SeeChapter 5, “Getting Help,” for instructions.)Troubleshooting the Built-In DisplayIf the computer is receiving power, but nothing appearson your display (such as light, text, or graphics) or thedisplay image does not appear as you would expect,make a copy of the Diagnostics Checklist found in Chap-ter 5 and fill it out as you complete the followingprocedure.NOTES: The highest video resolution supported by thebuilt-in display on the Dell Latitude CP M133ST,M166ST, and M233ST is 800 x 600 pixels. The highestresolution supported by the built-in display on theDell Latitude CP M233XT is 1024 x 768 pixels. If yourapplication program requires a higher resolution, attachan external monitor to the computer.1. Press the key combination severaltimes. Does an image appear on the built-indisplay?Yes. The video image was being sent to an externalmonitor. The problem is resolved.No. Go to step 2.2. If the computer is running, press the power but-ton to exit suspend mode or to reactivate thedisplay. Is the full display readable?Yes. The computer was in suspend mode, or the dis-play time-out feature was activated. The problem isresolved.No. Continue to step 3.3. If the computer is running, is the battery indica-tor showing a steady amber light?Yes. The display turns off when the final low-batterywarning occurs. Replace the battery or connect thecomputer to alternating current (AC) power throughthe AC adapter. Press the power button. If the dis-play is still not readable, continue to step 4.No. Continue to step 4.4. Turn off the computer and any attached periph-erals. Disconnect all peripherals from thecomputer.5. Make sure the AC adapter is firmly connected tothe computer and to an AC power source, or ver-ify that a fully charged battery is properly seatedin its compartment.6. Turn on the computer. Is the display on?Allow one minute for the computer to initialize itscomponents.Yes. Continue to step 7.No. Go to step 9.7. Press the down-arrow or up-arrow keycombination to adjust the brightness. Is the full dis-play readable?Yes. Continue to step 8.No. Go to step 9.
