Dell Latitude LM Reference And Troubleshooting Manual

Also see for Latitude Latitude Z: System information guide Setup guide System information guide Specifications System information guide

Contents

Dell Latitude LM Reference And Troubleshooting Manual Manual pdf 47 page image

Troubleshooting Your Computer 3-13Total Power Failure When Using the ACAdapterIf no signs of power are present in the computer whenusing the AC adapter, make a copy of the DiagnosticsChecklist found in Chapter 5 and fill it out as you com-plete the following procedure:1. Turn off the computer and peripherals, and dis-connect them from AC power. If you are using asurge protector, remove it.2. Make sure the AC adapter is connected to thecomputer, and verify that the power cable isfirmly attached to the AC adapter and to the ACpower source.See “Checking Connections” found earlier in thischapter.3. Does the light-emitting diode (LED) on top of theAC adapter turn on?Yes. Go to step 4.No. The AC adapter may be defective. Go to step 5.4. Turn on the computer. Does the power indicatorappear in the status display panel?Yes. The problem is resolved.No. Go to step 5.5. Call Dell for technical assistance.See Chapter 5, “Getting Help,” for instructions.Total Power Failure When Using a BatteryIf an AC adapter is not connected to your computer, thecomputer’s power source is its battery. If the battery sta-tus indicator does not appear in the status display panelwhen you turn on the computer, the battery’s charge maybe depleted. If the battery status indicator is empty, thebattery may be nearly out of charge or defective. Totroubleshoot this problem, make a copy of the Diagnos-tics Checklist found in Chapter 5 and fill it out as youcomplete the following procedure:1. Turn off the computer and peripherals. Dis-connect the peripherals from AC power.2. Reseat (remove and reinstall) each installed bat-tery by first removing and then replacing thebattery in its compartment.3. Turn on the computer. Does the battery statusindicator appear in the status display panel?Allow one minute for the computer to initialize itscomponents before checking for signs of power.Yes. Go to step 4.No. Use the AC adapter to connect your computer to ACpower. If the computer operates normally when using ACpower, go to step 7. If the computer does not boot whenusing the AC adapter, see the previous subsection,“Total Power Failure When Using the AC Adapter.”4. Is the battery status indicator blinking?Yes. Go to step 7.No. Go to step 5.5. Is a battery status indicator solid, and does theAC power indicator appear in the status displaypanel?Yes. Go to step 6.No. The battery is defective. Call Dell for technicalassistance. (See Chapter 5, “Getting Help,” forinstructions.)6. Is there a single bar on the far left of the batterystatus indicator?Yes. The battery is too hot. Remove the battery, andlet it cool to room temperature. Then reinstall thebattery, reboot the computer, and go back to step 3.(If you return to step 6 the second time you performthis procedure, call Dell for technical assistance [seeChapter 5, “Getting Help,” for instructions].)No. Call Dell for technical assistance. (See Chapter5, “Getting Help,” for instructions.)7. Use the AC adapter to fully charge the battery.For instructions, see the topic titled “Charging theBattery” in the online System User’s Guide. The bat-tery charges in 3 hours using an AC power source ifthe computer is off; the battery charges in 4 hours ifthe computer is on.