12
Troubleshooting
Picture is scrambled
/
Check your graphics board manual for the
proper monitor setting on your Multiscan
300sf.
/
Check this manual and confirm that the
graphic mode and the frequency at which you
are trying to operate is supported. Even within
the proper range some video boards may have
a sync pulse that is too narrow for the monitor
to sync correctly.
Color is not uniform
/
If the monitor is close to any potencial sources
of magnetic fields such as a speaker, or you
turn the monitor while the
u
power switch is
in the “on” position, color may not be
uniforme. Trip the
u
power switch once to
activate the Auto-degauss cycle
∗
.
White does not look white
/
Adjust color temperature using the OSD.
(page 8)
/
Check that the 5 BNC’s are connected in the
right order (from power cord side: Red-
Green-Blue-HD-VD).
/
If your computer is a Macintosh system and
the Macintosh adapter has micro switches,
check that the micro switches are properly set
for your system. (See the adapter manual.)
Picture is flickering
/
If the refresh rate is not appropriate, the
picture may flicker. Set the refresh rate of the
non-interlace mode as high as possible on the
computer. For detailes on how to set the
refresh rate, consult the dealer of your
computer or video board.
Screen image is not centered or sized properly
/
Adjust centering, size or geometry using the
OSD. (page 6, 7)
/
Some video modes do not fill the screen to the
edge of the monitor. There is no single answer
to solve the problem. There is a tendency to
have this problem on higher refresh timings
and Macintosh video timings.
Edges of the image are curved
/
Adjust pincushion using the OSD. (page 7)
White lines show red or blue shades at edges
/
Adjust the convergence using the OSD.
(page 8)
Picture is fuzzy
/
Adjust the contrast and brightness using the
OSD (page 6). We have come across several
brands of SVGA boards that have an excessive
video output level which creates a fuzzy
picture at max contrast.
/
Trip the
u
power switch once to activate the
Auto-degauss cycle
∗
.
/
If red or blue shades are found at the edge of
images, adjust convergence using the OSD.
(page 8)
Picture bounces or has wavy oscillations
/
Isolate and eliminate any potential sources of
electric or magnetic fields. Common causes for
this symptom are electric fans, fluorescent
lighting, laser printers, and so on.
/
If you have another monitor close to this
monitor, increase the distance between them
to reduce the interference.
/
Try plugging the monitor into a different AC
outlet, preferably on a different circuit.
/
Try the monitor on a completely different
computer in a different room.
Picture appears to be ghosting
/
Eliminate the use of video cable extension
cable and/or video switch boxes if this
symptom occurs. Excessive cable length or
weak connection can produce this symptom.
Two fine horizontal lines (wires) are visible
/
These wires stabilize the vertically striped
Aperture Grille. This Aperture Grille allows
more light to pass through to the screen giving
the Trinitron CRT more color and brightness.
Wavy or elliptical (moire) pattern is visible
/
Due to the relationship between resolution,
monitor AG pitch and the pitch of some image
patterns, certain screen backgrounds,
especially gray, sometimes show moire. This
can only be eliminated by changing your
desktop pattern.
Just after turning the monitor on, a “boon” noise
is heard
/
Just after turning the monitor on, a noise may
be heard for about 3 seconds.
This noise is not failure, it is caused by the
auto-degauss cycle*.
∗
The Auto-degauss function demagnetizes the metal frame
of the CRT to obtain a neutral field for uniform color
reproduction. If a second degauss cycle is needed, allow a
minimum interval of 20 minutes for the best result.
• If the problem persists, call your authorized Sony dealer
from a location near your monitor.
• Note the model name and the serial number of your
monitor. Also note the make and name of your computer
and video board.
