Compaq 7550 - Manual (Page 22)

A–2 Reference Guide
Vertical position may need
adjustment. Press the SELECT button to
access the On-Screen
Display. Select V. Position to
adjust as needed.
“No Signal” is
displayed on screen. Monitor video cable is
disconnected. Connect the 15-pin monitor
video cable to the computer.
Be sure that the computer
power is on.
“Out of Frequency” is
displayed on screen. Video resolution and/or
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
disconnected. Check all speaker power
connections and make sure
they are properly connected.
Power button on right-side
speaker may be off. Turn the power button
clockwise on the front
of the right-side speaker.
Speaker LED should
illuminate.
No sound from
speakers. Speaker audio plug may be
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
activated. Select the Speaker icon on
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.
Problem Possible Cause Solution