Samsung SyncMaster 591S, 793S, 793DF, 795DF, 797DF, 997DF, 793MB, 795MB Owner's Manual page 25

Q & A
Question
How can I change the frequency?
How can I adjust the resolution?
How can I set the Power Saving
function?
The monitor makes a sound when it
is turned on.
How can I clean the outer
case/Picture tube?
Answer
Frequency can be changed by reconfiguring the video
card.
Note that video card support can vary, depending on the
version of the driver used.
(Refer to the computer or the video card manual for
details.)
Windows XP/2000: Set the resolution at the Control
Panel, Display, Settings .
* Contact the video card manufacturer for details.
Windows XP/2000: Set the function at BIOS -SETUP
of the computer or the screen saver. (Refer to
Windows/Computer Manual).
This is normal as some sound may be generated when
the metal case and the electromagnet, which are installed
to block any electromagnetic waves, interact with each
other.
Disconnect the power cord and then clean the monitor
with a soft cloth, using either a cleaning solution or plain
water.
Do not leave any remains of the detergent nor scratch the
case. Do not allow any water to go inside the monitor.