HP 7100 Maintenance & Service Manual page 124

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.
Speakers muted in On-Screen Display (OSD) settings.
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 standby mode.
Internal speaker is disabled in Computer Setup.
The application is set to use a different audio device than
speakers.
Some applications can select which audio output device is
used.
The operating system controls may be set to use a different
audio device as the default output device than what is
expected.
Speakers muted in On-Screen Display (OSD) settings.
Sound from headphones is not clear or muffled.
Cause
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.
116 Appendix G Troubleshooting without diagnostics
Solution
Double-click the Speaker icon on the taskbar, then make
sure that Mute is not selected and use the volume slider to
adjust the volume.
Enable the audio in Computer Setup: Security >
Device Security > System Audio.
Make sure the speakers are not muted in the OSD.
Turn on the external speakers.
Ensure that the device is connected to the correct jack on the
computer. The speakers should be plugged into the rear line-
out jack and the headphones should be plugged into the
front headphone jack.
See the sound card documentation for proper speaker
connection.
Turn on and use headphones or external speakers, if
connected, or disconnect headphones or external speakers.
Press the power button or touch the screen to resume from
standby mode.
CAUTION: When attempting to resume from standby
mode, 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 > Device Options > Internal Speaker.
Make sure the correct device is being used.
Make sure the application has selected the correct audio
device.
Set the operating system to use the correct audio device.
Make sure the speakers are not muted in the OSD.
Solution
Plug the headphones into the headphone connector on the
front of the computer.