Dell OptiPlex N Troubleshooting Manual

Also see for OptiPlex HUB: Owner's manual Quick start guide Owner's manual Setup guide Technical guidebook

Contents

Dell OptiPlex N Troubleshooting Manual Manual pdf 74 page image

6-6 Diagnostics and Troubleshooting Guide3. Turn off the system, including any attachedperipherals, and disconnect all the AC powercables from their power sources. Also, disconnectany telephone or telecommunication lines fromthe computer.4. Remove the computer cover.5. Reseat the SIMMs in their sockets.See your system documentation for instructions.6. Replace the computer cover, reconnect the systemto AC power, and turn it on.7. Enter the System Setup program to check theTotal Memory or System Memory category again.Does the amount of memory installed match theTotal Memory or System Memory setting?Yes. Go to step 8.No. Go to step 9.8. Reboot the system, and observe the monitorscreen and the Num Lock, Caps Lock, and ScrollLock indicators on the keyboard.Does the monitor screen remain blank, and do theNum Lock, Caps Lock, and Scroll Lock indicatorson the keyboard remain on?Yes. Go to step 9.No. Go to step 11.9. Turn off the system, disconnect it from AC power,and remove the computer cover.10. If possible, swap the SIMM in socket A with oneof the same capacity, reboot the system, andobserve the monitor screen and the indicators onthe keyboard.Is the problem resolved?Yes. You have fixed the problem.No. Go to step 11.11. Determine whether there is a memory expansioncard installed in an expansion slot.Is a memory expansion card installed?Yes. Go to step 12.No. Go to step 14.12. Check the memory expansion card’s documenta-tion to determine whether the card is configuredcorrectly.Is the memory expansion card configured correctly?Yes. Go to step 13.No. Go to step 14.13. Reconfigure the memory expansion card.14. Replace the computer cover, reconnect the systemto AC power, reconnect any telephone or telecom-munication lines and turn it on.15. Insert the Dell Diagnostics Diskette into drive A,reboot the system, and run the RAM Test Groupin the Dell Diagnostics. (See Chapter 4, “Runningthe Dell Diagnostics.”)Do the tests complete successfully?Yes. You have fixed the problem.No. See Chapter 7, “Getting Help,” for instructionson obtaining technical assistance.Troubleshooting the VideoSubsystemTroubleshooting video problems involves determiningwhich of the following is the source of the problem: themonitor, the monitor interface cable, the video memory,or the video logic of the computer. You can also have ahigh-resolution video expansion card installed, whichoverrides the video logic of the computer.The following procedure troubleshoots problems with thevideo memory and video logic only. Before you begin,perform the procedure found in “Troubleshooting theMonitor” in Chapter 5 to determine whether or not themonitor is the source of the problem.CAUTION: See “Protecting Against Electro-static Discharge” in the safety instructions atthe front of this guide.