Samsung Syncmaster 920t Quick Start Guide

							  
 
This box appears during normal operation if the video cable becomes disconnected or 
damaged. 
 
4. Turn off your monitor and reconnect the video ca ble; then turn on both your computer and the 
monitor.  
If your monitor screen remains blank after using the previous procedure, check your video 
controller and computer system; your  monitor is functioning properly. 
 
 
 Warning Messages  
  If there is something wrong with the input signal, the message below appears on the screen 
or the screen goes blank although the power indicator LED is still on. The message may 
indicate that the monitor is out of scan range  or that you need to check the signal cable. 
 
   
 Environment  
 
The location and the position of the monitor may influence the quality and other 
features of the monitor. 
1. If there are any sub woofer speakers near  the monitor, unplug and relocate the woofer 
to another room.  
2. Remove all electronic devices such as ra dios, fans, clocks and telephones that are 
within 3 feet (one meter) of the monitor. 
   
 Useful Tips 
 
zA monitor recreates visual signals received from  the computer. Therefore, if there is trouble with 
the computer or the video card, this can cause the monitor to become blank, have poor coloring, 
noise, unavailable video mode, etc.  In this case, first check the source of the problem, and then 
contact a service center or your dealer.  
 
zJudging the monitors working condition   
If there is no image on the screen or a  Not Optimum Mode, Recommended mode : 1280 x 
1024 60Hz  message comes up, disconnect the cable from the computer while the monitor is still 
powered on. 
{If there is a message coming up on the screen  or if the screen goes white, this means the 
monitor is in working condition.  
{In this case, check the  computer for trouble. 
 
						

							 
 
Before calling for service, check the information in this section to see if you can remedy any 
problems yourself. If you do  need assistance, please call the phone number on the 
Information section or contact your dealer .
 
 
SymptomCheck ListSolutions
No images on the 
screen. I cannot turn 
on the monitor.Is the power cord connected 
properly?Check the power cord connection 
and supply.
Can you see  Check Signal Cable  
on the screen? (When connecting D-Sub cable)  
Check the signal cable connection. 
(When connecting DVI cabel)  
If you still see an error message on 
the screen when the monitor is 
connected properly, check to see if 
the monitor status is set to analog.  
Press Source button to have the 
monitor double-check the input 
signal source.
If the power is on, reboot the 
computer to see  the initial screen
(the login screen), which can be 
seen. If the initial screen (the login screen) 
appears, boot the computer in the 
applicable mode (the safe mode for 
Windows ME/XP/2000) and then 
change the frequency of the video 
card. 
(Refer to the  Preset Timing Modes ) 
Note: If the initial screen (the login 
screen) does not appear,  contact a 
service center or your dealer .  
Can you see 
Not Optimum 
Mode, Recommended mode : 
1280 x 1024 60Hz  on the screen? You can see this message when the 
signal from the vi
deo card exceeds 
the maximum resolution and 
frequency that the monitor can 
properly handle.  
 
Adjust the maximum resolution and 
frequency that the monitor can 
handle properly.  
 
If the display exceeds SXGA or 
75Hz, a  Not Optimum Mode, 
Recommended mode : 1280 x 
1024 60Hz  message is displayed. 
If the display exceeds 85Hz, the   
SyncMaster 720T/920T
 
						

							display will work properly but the 
Not Optimum Mode, 
Recommended mode : 1280 x 
1024 60Hz message appears for 
one minute and then disappears.  
Please change to the recommended 
mode during this one-minute period. 
 
(The message is displayed again if 
the system is rebooted.) 
There is no image on the screen.  
Is the power indicator on the monitor 
blinking at 1 second intervals?The monitor is in PowerSaver mode. 
 
Press any key on the keyboard to 
activate the monitor and restore the 
image on the screen.  
 
If there is still no image, press the 
 Source  button.  
Then press any key on the keyboard 
again to activate the monitor and 
restore the image on the screen.
Is the monitor connected using the 
DVI cable?You may get a blank screen if you 
boot the system before you connect 
the DVI cable, or disconnect and 
then reconnect the DVI cable while 
the system is running as certain 
types of graphic cards do not send 
out video signals. 
Connect the DVI cable and then 
reboot the system.
I cannot see the On 
Screen Display.Have you locked  the On Screen 
Display (OSD) Menu to prevent 
changes?Unlock the OSD by pressing the 
MENU button for at least 5 seconds.
The screen shows 
strange colors or just 
black and white.Is the screen displaying only one 
color as if looking at the screen 
through a cellophane paper? Check the signal cable connection. 
Make sure the video card is fully 
inserted in  its slot.
Have the screen colors become 
strange after running a program or 
due to a crash between 
applications?Reboot the computer.
Has the video card been set 
properly?Set the video card by referring to the 
video card manual. 
The screen suddenly 
has become 
unbalanced.Have you changed the video card or 
the driver?Adjust screen image position and 
size using the OSD.
Have you adjusted  the resolution or 
frequency on the monitor?Adjust the resolution and frequency 
of the video card.  
(Refer to the  Preset Timing Modes ).
The screen can be unbalanc ed due to the cycle of the video card signals. 
Readjust Position by  referring to the OSD.
The screen is out of 
focus or OSD cannot 
be adjusted.Have you adjusted the resolution or 
frequency on the monitor?Adjust the resolution and frequency 
of the video card.  
(Refer to the  Preset Timing Modes ).
LED is blinking but no 
images on the screen.Is the frequency properly adjusted 
when checking the Display Timing 
on the menu?Adjust the frequency properly by 
referring to the video card manual 
and the  Preset Timing Modes .  
(The maximum frequency per 
resolution may differ  from product to 
product.) 
There are only 16 
colors shown on the 
screen. Have the Windows colors been set 
properly? Windows ME/2000/XP: 
Set the colors properly at the 
Control Panel  →
 Display  →
 
 
						

							 
The screen colors 
have changed after 
changing the video 
card.Settings. 
Has the video card been set 
properly?Set the video card by referring to the 
video card manual. 
There is a message 
that reads 
Unrecognized 
monitor, Plug & Play 
(VESA DDC) monitor 
found. Have you installed the monitor 
driver?Install the monitor driver according 
to the 
Driver Installation Instructions .
See the video card manual to see if 
the Plug & Play (VESA DDC) 
function can be supported. Install the monitor driver according 
to the Driver Installation Instructions .
Problems related to 
Audio No sound Ensure that the audio cable is firmly 
connected to both the audio-in port 
on your monitor and the audio-out 
port on your sound card.  
(Refer to the Connecting the 
Monitor )  
 
Check the volume level. 
Sound level is too low. Check the volume level.  
 
If the volume is still too low after 
turning the control to its maximum, 
check the volume control on the 
computer sound card or software 
program.
 
 
 
 Check the following items if there is trouble with the monitor.  
1. Check if the power cord and the video cables are properly connected to the computer.  
2. Check if the computer beeps more than 3 times when booting. 
(If it does, request an after-service for the main board of the computer.)  
3. If you installed a new video card or if you assembled the PC, check if the installed adapter (video) 
driver and the monitor driver.  
4. Check if the scanning ratio of the video screen is set at 75Hz.  
(Do not exceed 60Hz when using the maximum resolution.)  
5. If you have problems in installing the adapter (video) driver, boot the computer in Safe Mode,  remove the Display Adapter at the  Control Panel→
System →
Device Administrator  and then 
reboot the computer to reinstall the adapter (video) driver. 
 
 If problems repeatedly occur,  contact an authorized service center .
 
 
 Q & A  
Question  Answer 
How can I change the 
frequency?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.) 
How can I adjust 
the resolution?Windows ME/XP/2000 : Set the resolution at the Control 
Panel
→Display
→Settings.  
 
* Contact the video card manufacturer for details.
How can I set the Power Saving 
function?Windows ME/XP/2000 : Set the fu nction at BIOS-SETUP of the 
computer or the screen saver. (Refer to Windows/Computer 
Manual).  
How can I clean the outer Disconnect the power cord and then clean the monitor with a soft 
 
						

							case/LCD Panel?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.  
 
 Self-Test Feature Check  
Self-Test Feature Check  |  Warning Messages  |  Environment  |  Useful Tips
 
Your monitor provides a self test feature that allows you to check whether your monitor is 
functioning properly.  
 
 
 
   Self-Test Feature Check 
 
1. Turn off both your computer and the monitor.  
2. Unplug the video cable from the back of the computer.  
3. Turn on the monitor.  
If the monitor is functioning properly, you will see a box in the illustration below.  
 
 
 
This box appears during normal operation if the video cable becomes disconnected or 
damaged. 
 
4. Turn off your monitor and reconnect the video ca ble; then turn on both your computer and the 
monitor.  
If your monitor screen remains blank after using the previous procedure, check your video 
controller and computer system; your  monitor is functioning properly. 
 
 
 Warning Messages  
  If there is something wrong with the input signal, the message below appears on the screen 
or the screen goes blank although the power indicator LED is still on. The message may 
indicate that the monitor is out of scan range  or that you need to check the signal cable. 
 
   
 Environment  
 
The location and the position of the monitor may influence the quality and other 
features of the monitor. 
1. If there are any sub woofer speakers near  the monitor, unplug and relocate the woofer 
to another room.  
2. Remove all electronic devices such as ra dios, fans, clocks and telephones that are 
within 3 feet (one meter) of the monitor. 
 
						

							  
 Useful Tips 
 
zA monitor recreates visual signals received from  the computer. Therefore, if there is trouble with 
the computer or the video card, this can cause the monitor to become blank, have poor coloring, 
noise, unavailable video mode, etc.  In this case, first check the source of the problem, and then 
contact a service center or your dealer.  
 
zJudging the monitors working condition   
If there is no image on the screen or a  Not Optimum Mode, Recommended mode : 1280 x 
1024 60Hz  message comes up, disconnect the cable from the computer while the monitor is still 
powered on. 
{If there is a message coming up on the screen  or if the screen goes white, this means the 
monitor is in working condition.  
{In this case, check the  computer for trouble.  
 
						

							 
 
 General  
General
Model NameSyncMaster 720B/721B
LCD Panel
Size17.0 inch diagonal
Display area337.92(H) x 270.336(V)
Pixel Pitch0.264(H) x 0.264(V)
Typea-si TFT active matrix
Synchronization
Horizontal30 ~ 81 kHz
Vertical56 ~ 75 Hz
Display Color
16,194,277 Colors
Resolution
Optimum resolution1280 x 1024 @60Hz
Maximum resolution1280 x 1024 @75Hz
Input Signal, Terminated
RGB Analog , Composite Sync, SOG 
0.7Vp-p Positive at 75 ohms, Separate H/V sync, TTL level positive or negative 
Maximum Pixel Clock
135 MHz
Power Supply
AC 90 to 264 VAC, 60/50 Hz ± 3Hz
Signal Cable
15pin to 15pin D-sub cable, Detachable 
Power Consumption
less than 34 watts
 
SyncMaster 720B/721B
 
						

							Dimensions (WxDxH)/ Weight
388 x 50.4 x 323.90 mm 
388 x 215.7 x 406.3 mm (After installation of Stand) 
388 x 77.0 x 323.9 mm (After folding the Stand) / 6.0kg
VESA Mounting Interface
75mm x 75mm (for use with Specialty(Arm) Mounting hardware.)
Environmental considerations
OperatingTemperature: 50°F ~ 104°F(10°C ~ 40°C)  
Humidity: 10% ~ 80%, non-condensing
StorageTemperature: -4°F ~113°F (-20°C ~ 45°C)  
Humidity: 5% ~ 95%, non-condensing
Plug and Play Capability
This monitor can be inst alled on any Plug & Play  compatible system. Intera ction of the monitor and 
computer systems will provide the be st operating conditions and monitor settings. In most cases, 
monitor installation will proceed automatically, unless the user wishes to select alternate settings.
Dot Acceptable
TFT LCD panel manufactured by using advanced semiconductor technology with precision of 1ppm 
(one millionth) above is used for this product. But the pixels of RED, GREEN, BLUE and WHITE 
color seem to be bright sometimes or some of black pixels could be seen. This is not from bad 
quality and you can use it without uneasiness. 
zFor example, the number of TFT LCD sub pixels that  is contained in this product are 3,932,160.  
Note: Design and specifications are subject to change without prior notice.
 
 
 
 PowerSaver   
This monitor has a built-in po wer management system called PowerSaver. This system saves energy 
by switching your monitor into a low-power mode when it has not been used for a certain amount of 
time. The monitor automati cally returns to normal operation when you press a key on the keyboard. For 
energy conservation, turn your monitor OFF when it is not needed, or when leaving it unattended for 
long periods. The PowerSaver syst em operates with a VESA DPMS co mpliant video card installed in 
your computer. Use a software utility installed  on your computer to set up this feature. 
 
State  Normal Operation  Power saving mode 
EPA/ENERGY 2000  Power Switch off 
(120Vac)   
Power IndicatorGreenGreen BlinkingBlack
Power ConsumptionLess than 34W
Less than 2W (off 
mode) 
(115Vac/230Vac)Less than 1W  (115Vac) 
Less than 2W  (230Vac)
 
This monitor is EPA ENERGY STAR® compliant and ENERGY2000 
compliant when  used with a computer equipped with VESA DPMS 
functionality. 
As an ENERGY STAR
® Partner, SAMSUNG has determined that this 
product meets the ENERGY STAR® guidelines for energy efficiency.
 
 
 
 Preset Timing Modes  
 
						

							   
 
If the signal transferred from the computer is t
he same as the following Preset Timing Modes, the 
screen will be adjusted automatically. However, if the signal differs, the screen may go blank while 
the power LED is on. Refer to the video card manual and adjust the screen as follows.  
 
Table 1. Preset Timing Modes 
Display Mode
Horizontal 
Frequency  (kHz)Vertical 
Frequency  (Hz) Pixel Clock (MHz) Sync Polarity  (H/V)
MAC, 640 x 480 35.000 66.667 30.240 -/- 
MAC, 832 x 624  49.726  74.551  57.284  -/- 
MAC, 1152 x 870 68.681 75.062 100.000 -/- 
IBM, 640 x 350  31.469  70.086  25.175  +/- 
IBM, 640 x 480 31.469 59.940 25.175 -/- 
IBM, 720 x 400  31.469  70.087  28.322  -/+ 
VESA, 640 x 480  37.5 00 75.000 31.500  -/- 
VESA, 640 x 480 37.861 72.809 31.500 -/- 
VESA, 800 x 600  35.156  56.250 36.000 +,-/+,- 
VESA, 800 x 600 37.879 60.317 40.000 +/+ 
VESA, 800 x 600  46.8 75 75.000 49. 500 +/+ 
VESA, 800 x 600 48.077 72.188 50.000 +/+ 
VESA, 1024 x 768  48.3 63 60.004 65.000  -/- 
VESA, 1024 x 768 56.476 70.069 75.000 -/- 
VESA, 1024 x 768  60.0 23 75.029 78. 750 +/+ 
VESA, 1152 x 864 67.500 75.000 108.00 +/+ 
VESA, 1280 x 1024  63. 981 60.020  108.00 +/+ 
VESA, 1280 x 1024 79.976 75.025 135.00 +/+ 
Horizontal Frequency
The time to scan one line connecting  the right edge to the left edge of 
the screen horizontally is called Horizontal Cycle and the inverse 
number of the Horizontal Cycle is called Horizontal Frequency. Unit: 
kHz  
 
Vertical Frequency
Like a fluorescent lamp, the screen has to repeat the same image 
many times per second to display an image to the user. The 
frequency of this repetition is called Vertical Frequency or Refresh 
Rate. Unit: Hz 
 
						

							 
 
 General  
General
Model NameSyncMaster 720T
LCD Panel
Size17.0 inch diagonal
Display area337.92(H) x 270.336(V)
Pixel Pitch0.264(H) x 0.264(V)
Typea-si TFT active matrix
Synchronization
Horizontal30 ~ 81 kHz
Vertical56 ~ 75 Hz
Display Color
16,194,277 Colors
Resolution
Optimum resolution1280 x 1024 @60Hz
Maximum resolution1280 x 1024 @75Hz
Input Signal, Terminated
RGB Analog , DVI Compliant Digital RGB  
Composite Sync, SOG, 0.7Vp-p Positive at 75 ohms 
Separate H/V sync, TTL level positive or negative
Maximum Pixel Clock
135 MHz 
Power Supply
AC 90 ~ 264 VAC, 60/50Hz ± 3Hz
Signal Cable
15pin to 15pin D-sub cable, Detachable 
DVI-D to DVI-D connector, Detachable
Power Consumption
 
SyncMaster 720T