HP ProDesk 600 G4 Base Model Small Form Factor PC Uživatelský manuál stáhnout pdf (Strana 81)

Sound does not come out of the speaker or headphones.

Cause Solution

CAUTION: When attempting to resume from Sleep state, do not

hold down the power button for more than four seconds.

Otherwise, the computer will shut down and you will lose any

unsaved data.

Internal speaker is disabled in Computer Setup. Enable the internal speaker in Computer Setup. Select Advanced >

Built-in Device Options.

The application is set to use a dierent audio device than speakers. Some graphics cards support audio over the DisplayPort connection

(if applicable), so multiple audio devices may be listed in Device

Manager. Make sure the correct device is being used.

To access Device Manager, type device manager in the taskbar

search box, and then select Device Manager from the list of

applications.

Some applications can select which audio output device is used. Make sure the application has selected the correct audio device.

The operating system controls may be set to use a dierent audio

device as the default output device than what is expected.

Set the operating system to use the correct audio device.

Sound from headphones is not clear or mued.

Cause Solution

Headphones are plugged into the rear audio output connector. The

rear audio output connector is for powered audio devices and is not

designed for headphone use.

Plug the headphones into the headphone connector on the front of

the computer.

Computer appears to be locked up while recording audio.

Cause Solution

The hard disk may be full. Before recording, make sure there is enough free space on the hard

disk. You can also try recording the audio le in a compressed

format.

Line-in jack is not functioning properly.

Cause Solution

Jack has been recongured in the audio driver or application

software.

In the audio driver or application software, recongure the jack or

set the jack to its default value.

There is no sound or very weak sound is detected by the headset microphone.

Cause Solution

The incorrect style of headset is being used. The front headset jack supports only Cellular Telephone Industries

Association (CTIA) style headsets. Open Mobile Terminal Platform

(OMTP) style headsets are not supported. These styles of headsets

dier by the way that the microphone signals are oriented on the

Solving audio problems 73

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