Sony CPD-1303 Operating Instructions (primary manual) - Page 38

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Troubleshooting Symptom Sides of the image are curved White lines show red or blue shades at edges Picture is fuzzy Picture bounces or has wavy oscillations Picture appears to be ghosting. Two fine horizontal lines (wires) are visible Wavy or elliptical (moire) pattern is visible. Check these items • Adjust the "Pincushion" control in "Geometry" adjustment mode (page 9). • Adjust the "Convergence" controls (page 9). • Adjust the "Contrast" and "Brightness" controls (page 8). We have come across several brands of SVGA boards that have excessive video output level -which creates fuzzy picture at max contrast. • Trip the power switch once to activate Auto-degauss cycle. This function demagnetizes the metal frame of the CRT to obtain 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 red or blue shades are found at the edge of images, adjust the "Convergence" controls (page 9). • 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 set 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. • Eliminate the use of video cable extension cable and/or video switch boxes if this symptom occurs. Excessive cable length or weak connections can produce this symptom. • 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. • Due to the relationship between resolution, monitor dot 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. • If your question concerns the features, specifications or compatibility of the monitor, contact Sony Technical Support. If the monitor appears to have malfunctioned, contact your nearest Sony Service Center. • Note the model name and the serial number of your monitor. Also note the make and name of your computer and video board. Specifications GDM-17SE1 Picture tube 0.25 mm aperture grille pitch 17 inches measured diagonally (16" maximum viewing image) 90-degree deflection Video image area Approx. 328 x 242 mm (w/h) (13 x 95/8 inches) Resolution Horizontal: Max. 1280 dots Vertical: Max. 1024 lines Standard image area Approx. 293 x 234 mm (w/h) (115/8 x 91/4 inches) or Approx. 300 x 225 mm (w/h) (11 /8 x 87/8 inches) Deflection frequency Horizontal: 31.5 to 82 kHz Vertical: 50 to 150 Hz AC input voltage/current 100 10 120 V, 50/60 Hz, 2.7 A 220 to 240 V, 50 - 60 Hz, 1.5 A Dimensions 406 x 414 x 450 mm (16 x 163/8 x 173/4 inches) Mass Approx. 22.5 kg (49 lb 8 oz) GDM-20SE1 Picture tube 0.30 mm aperture grille pitch 20 inches measured diagonally (19" maximum viewing image) 90-degree deflection Video image area Approx. 388 x 292 mm (w/h) (15 x 11'/2 inches) Resolution Horizontal: Max. 1280 dots Vertical: Max. 1024 lines Standard image area Approx. 350 x 280 mm (w/h) (137/8 x 111/8 inches) or Approx. 373 x 280 mm (w/h) (143/4 x 111/8 inches) Deflection frequency Horizontal: 31.5 to 85 kHz Vertical: 50 to 150 Hz AC input voltage/current 100 to 120 V, 50/60 Hz, 3.0 A Dimensions 220 to 240 V, 50 - 60 Hz, 1.8 A 474 x 474 x 501.5 mm (183/4 x 183/4 x 193/4 inches) Mass Approx. 30 kg (66 lb 2 oz) 14 Design and specifications are subject to change without nnfirn

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Troubleshooting
Symptom
Check
these
items
Sides
of
the
image
are
curved
Adjust
the
"Pincushion"
control
in
"Geometry"
adjustment
mode
(page
9).
White
lines
show
red
or
blue
shades
at
edges
Adjust
the
"Convergence"
controls
(page
9).
Picture
is
fuzzy
Adjust
the
"Contrast"
and
"Brightness"
controls
(page
8).
We
have
come
across
several
brands
of
SVGA
boards
that
have
excessive
video
output
level
-
which
creates
fuzzy
picture
at
max
contrast.
Trip
the
power
switch
once
to
activate
Auto
-degauss
cycle.
This
function
demagnetizes
the
metal
frame
of
the
CRT
to
obtain
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
red
or
blue
shades
are
found
at
the
edge
of
images,
adjust
the
"Convergence"
controls
(page
9).
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
set
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
connections
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
dot
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.
If
your
question
concerns
the
features,
specifications
or
compatibility
of
the
monitor,
contact
Sony
Technical
Support.
If
the
monitor
appears
to
have
malfunctioned,
contact
your
nearest
Sony
Service
Center.
Note
the
model
name
and
the
serial
number
of
your
monitor.
Also
note
the
make
and
name
of
your
computer
and
video
board.
Specifications
GDM-17SE1
Picture
tube
Video
image
area
Resolution
Standard
image
area
Deflection
frequency
Horizontal:
31.5
to
82
kHz
Vertical:
50
to
150
Hz
AC
input
voltage/current
100
10
120
V,
50/60
Hz,
2.7
A
220
to
240
V,
50
-
60
Hz,
1.5
A
Dimensions
406
x
414
x
450
mm
(16
x
16
3
/
8
x
17
3
/
4
inches)
Mass
Approx.
22.5
kg
(49
lb
8
oz)
0.25
mm
aperture
grille
pitch
17
inches
measured
diagonally
(16"
maximum
viewing
image)
90
-degree
deflection
Approx.
328
x
242
mm
(w/h)
(13
x
9
5
/
8
inches)
Horizontal:
Max.
1280
dots
Vertical:
Max.
1024
lines
Approx.
293
x
234
mm
(w/h)
(11
5
/
8
x
9
1
/
4
inches)
or
Approx.
300
x
225
mm
(w/h)
(11
/8
x
8
7
/
8
inches)
GDM-20SE1
Picture
tube
Video
image
area
Resolution
Standard
image
area
Deflection
frequency
Horizontal:
31.5
to
85
kHz
Vertical:
50
to
150
Hz
AC
input
voltage/current
100
to
120
V,
50/60
Hz,
3.0
A
220
to
240
V,
50
60
Hz,
1.8
A
Dimensions
474
x
474
x
501.5
mm
(18
3
/
4
x
18
3
/
4
x
19
3
/
4
inches)
Mass
Approx.
30
kg
(66
lb
2
oz)
0.30
mm
aperture
grille
pitch
20
inches
measured
diagonally
(19"
maximum
viewing
image)
90
-degree
deflection
Approx.
388
x
292
mm
(w/h)
(15
x
11'/2
inches)
Horizontal:
Max.
1280
dots
Vertical:
Max.
1024
lines
Approx.
350
x
280
mm
(w/h)
(13
7
/
8
x
11
1
/
8
inches)
or
Approx.
373
x
280
mm
(w/h)
(14
3
/
4
x
11
1
/
8
inches)
14
Design
and
specifications
are
subject
to
change
without
nnfirn