Solving Audio Problems - HP ProDesk 405 G4 Small Form Factor Maintenance And Service Manual

Solving audio problems

If the computer has audio features and you encounter audio problems, see the common causes and solutions
listed in the following table.
Headset microphone connected to the front is not working or is very quiet.
Cause
The front Headset connector supports CTIA (Cellular Telephone
Industries Association) style headsets and not OMTP (Open Mobile
Terminal Platform) style headsets. These differ by the microphone
connections.
Sound cuts in and out.
Cause
Processor resources are being used by other open applications.
Sound does not come out of the speaker or headphones.
Cause
Software volume control is turned down or muted.
Audio is hidden in Computer Setup.
The external speakers are not turned on.
The audio device may be connected to the wrong jack.
External speakers plugged into the wrong audio jack on a recently
installed sound card.
Headphones or devices connected to the line-out connector mute
the internal speaker.
Computer is in Sleep state.
Internal speaker is disabled in Computer Setup.
The application is set to use a different audio device than speakers.
84 Chapter 6 Troubleshooting without diagnostics
Solution
Make sure that a CTIA style headset is being used or use an OMTP
style headset with a commercially available adapter that converts
an OMTP headset to the CTIA pinout.
Solution
Shut down all open processor-intensive applications.
Solution
Double-click the Speaker icon on the taskbar, then be sure that
Mute is not selected and use the volume slider to adjust
the volume.
Enable the audio in Computer Setup: Advanced > Built-in Device
Options.
Turn on the external speakers.
Ensure that the device is connected to the correct jack on
the computer. The rear audio jack output is the green receptacle.
The speakers should be plugged into the line-out jack and
the headphones should be plugged into the headphone jack.
See the sound card documentation for proper speaker connection.
The rear audio jack output is the green receptacle.
Turn on and use headphones or external speakers, if connected, or
disconnect headphones or external speakers.
Press the power button to resume from Sleep state.
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.
Enable the internal speaker in Computer Setup. Select Advanced >
Built-in Device Options.
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 in Windows 10, type device
manager in the taskbar search box, and then select Device
Manager from the list of applications.