Compaq 7550, 9500, 7500 manual Select the Speaker icon on

Problem	Possible Cause	Solution
	Vertical position may need	Press the SELECT button to
	adjustment.	access the On-Screen
		Display. Select V. Position to
		adjust as needed.
“No Signal” is	Monitor video cable is	Connect the 15-pin monitor
displayed on screen.	disconnected.	video cable to the computer.
		Be sure that the computer
		power is on.

“Out of Frequency” is	Video resolution and/or
displayed on screen.	refresh rate are set higher
	than what your monitor
	supports.

Restart your computer and enter Safe Mode. Change your settings to a supported setting (see “Technical Specifications”). Restart your computer so that the new settings take effect.

No speaker power.	Speaker power cord is	Check all speaker power
	disconnected.	connections and make sure
		they are properly connected.
	Power button on right-side	Turn the power button
	speaker may be off.	clockwise on the front
		of the right-side speaker.
		Speaker LED should
		illuminate.

No sound from	Speaker audio plug may be
speakers.	disconnected from the back
	of the computer.

Make sure your audio input jack (green connector) is plugged into the back of your computer.

Mute button may be	Select the Speaker icon on
activated.	your computer screen and
	deselect Mute.

Volume may be too low.

Increase volume by using keyboard volume control or clicking on the Speaker icon on your computer screen and increasing the volume level. Volume may also be adjusted on the speaker.

A–2 Reference Guide