HP 5850 - Deskjet Color Inkjet Printer Reference Manual page 215

Table D-7 Solving Audio Problems (continued)
Sound does not come out of the speaker or headphones.
Cause
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.
Computer appears to be locked up while recording audio.
Cause
The hard disk may be full.
Line-in jack is not functioning properly.
Cause
Jack has been reconfigured in the audio driver or application
software.
Solution
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.
Solution
Plug the headphones into the headphone connector on the
front of the computer.
Solution
Before recording, make sure there is enough free space on the
hard disk. You can also try recording the audio file in a
compressed format.
Solution
In the audio driver or application software, reconfigure the jack
or set the jack to its default value.
Solving Audio Problems 203