Lenovo ThinkCentre M83z Maintenance Manual Download

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Actions:

• If you are using powered external speakers that have an On/Off control, verify that the On/Off control is

set to the

position and the speaker power cable is connected to a properly grounded, functional ac

electrical outlet.

• If your external speakers have a volume control, verify that the volume control is not set too low.

• Click the speaker icon in the Windows desktop notification area. A volume-control window opens. Press

Mixer

to open the Volume Mixer window. Verify that the speaker mute buttons are not pressed and the

volume settings are not 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 connector

on 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 internal

speaker, 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 Windows operating system. If the

program is designed to run in DOS, the program does not use the Windows sound feature and must be
configured to use SoundBlaster Pro or SoundBlaster emulation.

• Verify that the audio device drivers are correctly installed. See Windows help system for more information.

If these actions do not correct the problem, run the Lenovo Solution Center program. If you need technical
assistance, see “Lenovo Support Web site” on page 29.

An audio disc or AutoPlay-enabled disc does not automatically play when it is
inserted into a drive

Symptom: An audio disc or AutoPlay-enabled disc does not automatically play when it is inserted into a drive

Action: See “CD problems” on page 37.

Sound comes from one external speaker only

Symptom: Sound comes from one external speaker only.

Actions:

• 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.

• Right-click the speaker icon in the Windows desktop notification area, and then click

Playback devices

Click the

Playback

tab, select Speakers, and then click

Properties

. Click

Balance

on the

Levels

tab,

and verify that the Balance setting is set correctly.

If these actions do not correct the problem, you might have a failing speaker. Have the speaker serviced. If
you need technical assistance, see “Lenovo Support Web site” on page 29.

No audio in DOS applications or games

Symptom: No audio in DOS applications or games

Actions:

• Ensure that the DOS application or game is configured to use SoundBlaster Pro or SoundBlaster

emulation. Refer to the documentation that comes with the application or game for instructions on
setting sound-card settings.

ThinkCentre M83z Hardware Maintenance Manual