Dell Latitude CP Reference And Troubleshooting Manual

Also see for Latitude CP: Service manual Service manual

Contents

3-18 Dell Latitude CP Reference and Troubleshooting GuideTroubleshooting a Damaged ComputerIf your computer is dropped or damaged, use the follow-ing procedure.1. Turn off your computer, and disconnect it fromthe AC adapter. Then disconnect the AC adapterfrom AC power. Turn off any attached peripher-als, and disconnect them from their powersources and then from the computer.2. Save all your work, exit any open application pro-grams, and remove any installed batteries.3. Ground yourself by touching the unpainted metalsurface of the I/O panel.4. Remove the options cover from the bottom of thecomputer. Remove and reinstall any memorymodules in the memory module sockets, and thenreplace the options cover.To 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,to fit into their sockets in only one direction. Thesockets on the system board are notched so that thememory module can be firmly seated only one way.5. Verify that any installed PC Cards are properlyseated in the PC Card connectors. Verify that thehard-disk drive is properly installed.6. Replace any batteries you removed in step 2.7. Reconnect your computer and peripherals to ACpower, and turn them on.8. Run the Dell Diagnostics to verify that the computeris operating properly. (See Chapter 4, “Running theDell Diagnostics,” for instructions.)9. If the computer does not operate properly, makea copy of the Diagnostics Checklist found inChapter 5 and fill it out. Then call Dell for techni-cal assistance. (For instructions, see Chapter 5,“Getting Help.”)Troubleshooting a Power FailureOccasionally, you may experience a power failure in allor part of your computer. A total power failure is indi-cated by the absence of electrical activity (such as lightsand sounds) from the keyboard, display, hard-disk drive,and diskette drive. In a partial power failure, one or moreof these indicators shows that there is power to a part ofthe computer.To determine if there is any power to the computer, make acopy of the Diagnostics Checklist found in Chapter 5, “Get-ting Help,” and fill it out as you complete the followingprocedure.1. Turn on the computer. Does the green power indi-cator light up?Yes. Continue to step 2.No. Go to step 3.2. Save all your work, exit any open application pro-grams, turn off the computer, disconnect the ACadapter, and remove any installed batteries. Thenreinstall the batteries, reconnect the AC adapter,and turn on the computer. Does the green powerindicator turn on?Yes. Go to step 6.No. Continue to step 3.3. Turn off the computer. Then press the power but-ton. Does the power indicator light up?Yes. Your computer is receiving power. Continue tostep 4.No. Your computer is not receiving power. Go tostep 5.4. Does the computer boot successfully?Yes. The problem is resolved.No. Go to step 6.5. Reseat the batteries, and check the AC adapterconnection. Do the indicators light up?Yes. The problem is resolved.No. If the computer is powered by the AC adapter,see the next subsection, “Total Power Failure WhenUsing the AC Adapter.” If the computer is powered