Sony CPD-120VS Operating Instructions (primary manual) - Page 31

Sony CPD-120VS Manual

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Howling (feed-back) is heard Decrease the volume with _efi +/- buttons, or turn down the microphone input volume of the sound board. Picture is scrambled - Check your graphics board manual for the proper display setting on the display. 4 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 display to sync correctly. Color is not uniform 4 Trip the U switch once to activate the Auto-degauss cycle*. Picture is flickering 4 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 details on how to set the refresh rate, consult the dealer of your computer or video board. Screen image is not centered or sized properly 4 Adjust picture centering, size, or geometry (rotation/ pincushion) on the OSD (pages 19-22). 4 Some video modes do not fill the screen to the edge of the display. There is no single answer to solve the problem. There is a tendency for this problem to occur on higher refresh timings. Picture is fuzzy -9 Adjust the contrast and brightness on the OSD (pages 17, 18). Some brands of SVGA boards have an excessive video output level which creates a fuzzy picture at maximum contrast. -* The GPE setting may not be proper for the picture. Selecting a lower GPE number may improve the picture (page 25). + Trip the 6 switch once to activate the Auto-degauss cycle*. Picture bounces or has wavy oscillations 4 Isolate and eliminate any potential sources of electric or magnetic fields. Common causes for this symptom are electric fans, fluorescent lighting, laser printers, etc. If you have another display close to this display, increase the distance between them to reduce interference. 4 Try plugging the display into a different AC outlet, preferably on a different circuit. Picture appears to be ghosting -3 Eliminate the use of video extension cables and/or video switch boxes if this symptom occurs. Excessive cable length or weak connections can produce this symptom. Continued to the next page -) Troubleshooting 31

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Howling
(feed
-back)
is
heard
Decrease
the
volume
with
_efi
+/-
buttons,
or
turn
down
the
microphone
input
volume
of
the
sound
board.
Picture
is
scrambled
-
Check
your
graphics
board
manual
for
the
proper
display
setting
on
the
display.
4
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
display
to
sync
correctly.
Color
is
not
uniform
4
Trip
the
U
switch
once
to
activate
the
Auto
-degauss
cycle*.
Picture
is
flickering
4
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
details
on
how
to
set
the
refresh
rate,
consult
the
dealer
of
your
computer
or
video
board.
Screen
image
is
not
centered
or
sized
properly
4
Adjust
picture
centering,
size,
or
geometry
(rotation/
pincushion)
on
the
OSD
(pages
19-22).
4
Some
video
modes
do
not
fill
the
screen
to
the
edge
of
the
display.
There
is
no
single
answer
to
solve
the
problem.
There
is
a
tendency
for
this
problem
to
occur
on
higher
refresh
timings.
Picture
is
fuzzy
-9
Adjust
the
contrast
and
brightness
on
the
OSD
(pages
17,
18).
Some
brands
of
SVGA
boards
have
an
excessive
video
output
level
which
creates
a
fuzzy
picture
at
maximum
contrast.
-*
The
GPE
setting
may
not
be
proper
for
the
picture.
Selecting
a
lower
GPE
number
may
improve
the
picture
(page
25).
+
Trip
the
6
switch
once
to
activate
the
Auto
-degauss
cycle*.
Picture
bounces
or
has
wavy
oscillations
4
Isolate
and
eliminate
any
potential
sources
of
electric
or
magnetic
fields.
Common
causes
for
this
symptom
are
electric
fans,
fluorescent
lighting,
laser
printers,
etc.
If
you
have
another
display
close
to
this
display,
increase
the
distance
between
them
to
reduce
interference.
4
Try
plugging
the
display
into
a
different
AC
outlet,
preferably
on
a
different
circuit.
Picture
appears
to
be
ghosting
-3
Eliminate
the
use
of
video
extension
cables
and/or
video
switch
boxes
if
this
symptom
occurs.
Excessive
cable
length
or
weak
connections
can
produce
this
symptom.
Continued
to
the
next
page
—)
Troubleshooting
31