HP Compaq 6000 Pro MT Maintenance And Service Manual page 226

Table D-6 Solving Audio Problems (continued)
Line-in jack is not functioning properly.
Cause
Jack has been reconfigured in the audio driver or application
software.
Headphone/Microphone jack on the front of the computer is not functioning properly.
Cause
Jack has been reconfigured in the audio driver or application
software.
214 Appendix D Troubleshooting Without Diagnostics
Solution
In the audio driver or application software, reconfigure the jack
or set the jack to its default value.
Solution
In the audio driver or application software, reconfigure the jack
or set the jack to its default value.