Solving Audio Problems - HP xw4550 Service And Technical Reference Manual

Table 5-6 Display problems (continued)
Problem
Vibrating or rattling noise coming
from inside a CRT monitor when
powered on.
Clicking noise coming from inside a
CRT monitor.
High pitched noise coming from
inside a flat-panel monitor.
Fuzzy focus; streaking, ghosting,
or shadowing effects; horizontal
scrolling lines; faint vertical bars; or
unable to center the picture on the
screen. (Flat-panel monitors using
an analog VGA input connection
only.)
Certain typed symbols do not
appear correctly.

Solving audio problems

Table 5-7 Audio problems
Problem
Sound does not come out of the
speaker or headphones.
110 Chapter 5 System diagnostics and troubleshooting
Cause
Monitor must be degaussed.
Monitor degaussing coil has
been activated.
Electronic relays have been
activated inside the monitor.
Brightness and contrast
settings are too high.
Flat-panel monitor internal
digital conversion circuits
might be unable to correctly
interpret the output
synchronization of the graphic
card.
The font you are using does
not support that particular
symbol.
Cause
Software volume control is
turned down.
The external speakers are not
turned on.
External speakers plugged into
the wrong audio jack.
Audio cable not connected.
Digital CD audio is
not enabled.
Headphones or devices
connected to the line-out
connector mute the internal
speaker.
Solution
Degauss the monitor.
None. It is normal for the degaussing coil to be activated
when the monitor is powered on.
None. It is normal for some monitors to make a clicking
noise when turned on and off, when going in and out of
Standby mode, and when changing resolutions.
Lower brightness and contrast settings.
1. Select the monitor Auto-Adjustment option in the
monitor on-screen display menu.
2. Manually synchronize the Clock and Clock Phase on-
screen display functions. Download SoftPaq
SP20930 or SP22333, depending on the monitor, to
assist with the synchronization. You can download
the most recent SoftPaq release from:
http://www.hp.com/support/workstation_swdrivers
Use the Character Map to locate the and select the
appropriate symbol. ClickStart>All Programs>
Accessories>System Tools>Character Map. You can
copy the symbol from the Character Map into a document.
Solution
Double-click the Speaker icon on the taskbar and use the
volume slider to adjust the volume.
Turn on the external speakers.
See the sound card documentation for proper speaker
connection.
Connect audio cable between DVD-ROM drive and the
system board.
Enable digital CD audio:
1. From the Control Panel, select System.
2. On the Hardware tab, click the Device Manager
button.
3. Right-click the CD/DVD device and select
Properties.
4. On the Properties tab, be sure Enable digital CD
audio for this CD-ROM device is selected.
Turn on and use headphones or external speakers, if
connected, or disconnect headphones or external
speakers.
ENWW