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Lenovo ThinkCentre M83z User Manual
Also see for ThinkCentre M83z: Maintenance manual
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If the symptom that your computer is experiencing occurred immediately after you installed a new hardwareoption or new software, do the following before referring to the troubleshooting information:1. Remove the new hardware option or software. If you must remove the computer cover to remove ahardware option, ensure that you review and follow the electrical safety information provided with yourcomputer. For your safety, do not operate the computer with the cover removed.2. Run the diagnostic program to ensure your computer is operating correctly.3. Reinstall the new hardware option or software following the manufacturer's instructions.Audio problemsNo audio in WindowsActions:• If you are using powered external speakers that have an On/Off control, verify that the On/Off control isset to the On position and the speaker power cable is connected to a properly grounded, functional acelectrical outlet.• If your external speakers have a volume control, verify that the volume control is not set too low.• Double-click the speaker icon in the Windows notification area. A master volume-control window opens.Verify that the Mute settings are not checked and none of the volume settings is set too low.• Some models have a front audio panel you can use to adjust volume. If you have a front audio panel,verify that the volume is not set too low.• Verify that your external speakers (and headphones, if used) are connected to the correct audio connectoron the computer. Most speaker cables are color-coded to match the connector.Note: When external-speaker or headphone cables are attached to the audio connector, the internalspeaker, if present, is disabled. In most cases, if an audio adapter is installed in one of the expansion slots,the audio function built into the system board is disabled; use the audio jacks on the adapter.• Ensure that the program you are running is designed for use in the Microsoft Windows operating system.If the program is designed to run in DOS, the program does not use the Windows sound feature and mustbe configured to use SoundBlaster Pro or SoundBlaster emulation.• Verify that the audio device drivers are correctly installed. See Microsoft Windows help system formore information.If these actions do not correct the problem, run the Lenovo Solution Center program. If you need technicalassistance, see Chapter 11 “Getting information, help, and service” on page 75.An audio disc or AutoPlay-enabled disc does not automatically play when it isinserted into a driveAction: See “CD problems” on page 62.Sound comes from one external speaker onlyActions:• Ensure that the speaker cable is inserted completely into the connector on the computer.• Ensure that the cable that attaches the left speaker to the right speaker is securely connected.• Double-click the speaker icon in the Windows notification area. A master volume-control window opens.Verify that the Balance settings are set correctly.If these actions do not correct the problem, you might have a failing speaker. Have the speaker serviced. Ifyou need technical assistance, see Chapter 11 “Getting information, help, and service” on page 75.Chapter 10. Troubleshooting and diagnostics 61 |
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