HP xw6000 manual If you set digital as the Output mode, the internal speaker

			Troubleshooting Without Diagnostics
Audio
	Problem		Possible Solution
	Sound does not come out of the	Software volume control is turned down electronically, or
	speaker.	CD-ROM volume control on the front or back of the
		computer is turned down. Double–click on the speaker icon
		located on the taskbar, then set the volume by adjusting the
		volume slider.
		CD or DVD volume control on the front of the computer may
		be turned down. Increase the volume by turning the volume
		control dial.
		External speakers not turned on. Turn on the speakers.
		External speakers plugged into wrong jacks. Refer to the
		Computer User’s Guide or sound card documentation for
		proper speaker connection.
		Audio cable not connected. Connect audio cable between
		CD or DVD drive and the system board.
	Noise or silence comes from the	Computer may not detect correct speaker/headphone type
	speakers or headphones.	or output or analog–to–digital auto–sense is not engaged.
		1. If using digital speakers with a stereo jack, use the
			stereo–to–mono adapter to engage the auto–sense
			feature.
		2. If a the stereo–to–mono adapter is not available, use the
			multimedia device properties to manually switch the
			audio signal from analog to digital.
		3. If the headphones have a mono jack, use the
			multimedia device properties to manually switch the
			system to analog out.
		✎	If you set digital as the Output mode, the internal speaker
			and external analog speakers will no longer output audio

until you switch back to an auto–sense or analog mode.

If you set analog as your Output Mode, external digital speakers will not function until you change the output mode back to auto–sense or digital mode.

Service Reference Guide F–9