Sony SDM-N50PS Service Manual page 15

Symptom Check these items
The picture does not switch to the x Problems caused by the connected computer or other equipment
vertical view • Install the supplied WinPortrait (for Windows 95/98 and NT4.0) or MacPortrait (for
Macintosh) (page 10). For more information, see the supplied software's instruction
manual. If the software does not work properly, contact the software's customer service.
Picture flickers, bounces, • Adjust the pitch and phase (page 14).
oscillates, or is scrambled
• Isolate and eliminate any potential sources of electric or magnetic fields such as other
monitors, laser printers, fluorescent lighting, televisions, or electric fans.
• Move the monitor away from power lines or place a magnetic shield near the monitor.
• Try plugging the monitor into a different AC outlet, preferably on a different circuit.
x Problems caused by the connected computer or other equipment
• Check your graphics board manual for the proper monitor setting.
• Confirm that the graphics mode (VESA, Macintosh 19" Color, etc.) and the frequency of
the input signal are supported by this monitor (Appendix). Even if the frequency is within
the proper range, some graphics boards may have a sync pulse that is too narrow for the
monitor to sync correctly.
• Adjust the computer's refresh rate (vertical frequency) to obtain the best possible picture.
Picture is fuzzy • Adjust the brightness and contrast (page 13).
• Adjust the pitch and phase (page 14).
Picture is ghosting • Eliminate the use of video cable extensions and/or video switch boxes.
• Check that all plugs are firmly seated in their sockets.
Picture is not centered or sized • Adjust the pitch and phase (page 14).
properly
• Adjust the picture position (page 14). Note that for some input signals or graphics boards,
the picture may not fill the screen to the edges.
The picture is too small
• Set the zoom setting to ON (page 15).
x Problems caused by the connected computer or other equipment
• Set the computer's resolution to the screen's resolution.
Wavy or elliptical pattern (moire) • Adjust the pitch and phase (page 14).
is visible
Color is not uniform • Adjust the pitch and phase (page 14).
White does not look white
• Adjust the color temperature (page 15).
Monitor buttons do not operate • If the menu lock is set to ON, set it to OFF (page 16).
( appears on the screen)
The monitor turns off after a while
• Set the power saving function to OFF (page 16).
x Problems caused by the connected computer or other equipment
• Set the computer's power saving setting to off.
Displaying this monitor's name, serial number,
and date of manufacture.
While the monitor is receiving a video signal, press and hold the
MENU button for more than 5 seconds to display this monitor's
information box.
MENU
Example
INFORMATION
Model name
MODEL : SDM-N50PS
Serial number
SER NO : 1234567
MANUFACTURED : 2000-15
Week and year
of manufacture
20
If any problem persists, call your authorized Sony dealer and give
the following information:
• Model name: SDM-N50PS
• Serial number
• Name and specifications of your computer and graphics board.
Self-diagnosis function
This monitor is equipped with a self-diagnosis function. If there is
a problem with your monitor or computer(s), the screen will go
blank and the display's 1 (power) indicator will either light up
green or flash orange. If the 1 (power) indicator is lit in orange,
the computer is in power saving mode. Try pressing any key on
the keyboard or moving the mouse.
1 (power)
indicator
If the display's 1 (power) indicator is green
1 Turn off the media engine's AC power switch and
disconnect the video signal cables from the INPUT1
and INPUT2 connectors of the media engine.
2 Press the media engine's AC power switch to turn
the monitor on.
If all four color bars appear (white, red, green, blue), the monitor
is working properly. Reconnect the video input cables and check
the condition of your computer(s).
If the color bars do not appear, there is a potential monitor failure.
Inform your authorized Sony dealer of the monitor's condition.
If the display's 1 (power) indicator is flashing
orange
Press the 1 (power) switch twice to turn the monitor off
and then on.
If the 1 (power) indicator lights up green, the monitor is working
properly.
If the 1 (power) indicator is still flashing, there is a potential
monitor failure. Count the number of seconds between orange
flashes of the 1 (power) indicator and inform your authorized
Sony dealer of the monitor's condition. Be sure to note the model
name and serial number of your monitor. Also note the make and
model of your computer and graphic board.
Specifications
LCD panel Panel type: a-Si TFT Active Matrix
Picture size: 15 inch (38 cm)
Input signal format RGB operating frequency*
Horizontal: 30 – 61 kHz
Vertical: 48 – 85 Hz (only XGA mode
at 75 Hz)
Resolution Horizontal: Max.1024 dots
Vertical: Max.768 lines
Input signal levels RGB video signal
0.700 Vp-p, 75 Ω , positive
SYNC signal
TTL level, 2 k Ω ,
positive or negative
(Separate horizontal and vertical,
or composite sync)
0.3 Vp-p, 75 Ω , negative
(Sync on green)
Headphones jack Stereo minijack
Accepts impedance of more than 16 Ω
AUDIO IN jack Stereo minijack
Accepts impedance of 47 k Ω
Accepts level 0.5 Vrms
Power requirements 100 – 240 V, 50 – 60 Hz,
0.45 – 0.25 A
Power consumption Max. 28 W
Operating temperature 5 – 35 C
˚
Dimensions (width/height/depth)
Display (without stand):
Approx. 356 × 280 × 26 mm
1 × 11 1 × 1 1
(14 / / / inches)
16 6 16
Display (with stand, at maximum
angle: 40 ˚ ):
Approx. 356 × 225 × 203 mm
1 × 8 7 × 8 inches)
(14 / /
16 8
Media engine (without stand):
Approx. 45 × 180 × 180 mm
3 × 7 1 × 7 1
(1 / / / inches)
4 8 8
Media engine (with stand):
Approx. 94 × 185 × 180 mm
× 7 × 7
11 1 1
(3 / / / inches)
16 4 8
Mass Display (with stand):
Approx. 1.75 kg (3 lb 140 oz)
Media engine (with stand):
Approx. 0.85 kg (1 lb 14 oz)
Plug & Play DDC1/DDC2B/DDC2Bi
Accessories See page 8.
* Recommended horizontal and vertical timing condition
• Horizontal sync width duty should be more than 4.8% of total
horizontal time or 0.8 µs, whichever is larger.
• Horizontal blanking width should be more than 2.5 µsec.
• Vertical blanking width should be more than 450 µsec.
Design and specifications are subject to change without notice.
21
GB