Samsung Syncmaster 940ux Quick Start Guide

							Menu Description
InformationShows a video source, display mode on the OSD screen.  
 
[MENU 
→ ,  
→ MENU]
 
						

							 
 
 
 Check List 
Before calling for assistance, check the informatio n 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 .
 
 
Symptom Check List Solutions
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?  (Connected using the D-sub cable)
 
Check the signal cable connection.  
(Connected using the DVI cable)  
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   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 the Service Center or your 
dealer .  
Can you see  Not Optimum 
Mode,Recommended mode 
1280 x 1024 60 Hz  on the 
screen?  You can see this message when the signal from 
the video card exceeds the maximum resolution 
and frequency that the monitor can handle 
properly.  
 
Adjust the maximum resolution and frequency that 
the monitor can handle properly.  
 
If the display exceeds SXGA or 75 Hz, a 
Not 
Optimum Mode,Recom mended mode 1280 x 
1024 60 Hz  message is displayed. If the display 
exceeds 85 Hz, the display will work properly but 
the  Not Optimum Mode,Recommended Mode 
1280 x 1024 60 Hz  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  The monitor is in PowerSaver mode. 
 
						

							 
 
screen.  
Is the power indicator on the 
monitor blinking at 1 second 
intervals? 
press a key on the keyboard to activate the monitor 
and restore the image on the screen.  
 
If there is still no image, 
press the   button.  
Then press any key on the keyboard again to 
activate the monitor and restore the image on the 
screen.
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 [ ] 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 to the 
monitor?Adjust the resolution and frequency at the video 
card.  
(Refer to the Preset Timing Modes).
The screen can be unbalanced 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).
There are only 16 
colors shown on the 
screen. 
The screen colors 
have changed after 
changing the video 
card.Have the Windows colors been 
set properly? Windows ME/2000/XP: 
Set the colors properly at the 
Control Panel →
 
Display →
 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.
 
USB Monitor Check List 
Symptom Check List Solutions
There is no image on 
the screen. I cannot 
turn on the monitor. If you quickly and 
repeatedly turn your 
USB monitor off and 
on, it may not work 
normally.Your USB monitor is recognized as a general USB device 
on your PC. Therefore, please refer to the troubleshooting 
information for USB devices by visiting Microsoft’s 
customer support site. ( www.microsoft.com - Support )
1. Right-click the ‘My Computer ’ and click on ‘Properties’.  
2. The Device Manager is displayed. 
3. From the “Action” menu, click “Scan for hardware 
changes”. Reboot your PC. 
The screen of the 
USB monitor freezes.Check the ‘Hardware 
acceleration’ setting for 
your USB monitor in 
the ‘Display Properties’ 
window.Set the ‘Hardware acceleration’ value to ‘Full’. 
For more information on how to configure the settings, click 
here. 
1. Right-click the ‘Windows Desktop’ and click on 
‘Properties’.  
2. The “Display Properties” window appears.Select the 
 
						

							 
“Settings” tab and click on “Advanced”. 
3. If the “Properties” window for your monitor is displayed, 
select the “Troubleshoot” tab.Move the “Hardware 
acceleration” slide to “Full
My USB monitor is 
connected but the 
screen is blank. Does the Auto 
Installation program run 
when your USB 
monitor is connected? Check your user account in the Control Panel.  
1. Click Start – Control Panel – User Accounts - Change an 
account – Admin: Computer administrator – Change my 
account type. In the displayed window, Computer 
administrator (Power User or higher) must be selected. – 
For Windows XP computers. 
2. Set your account type as directed above. Then turn the 
Power button at the front of your USB monitor off and on or 
reconnect the USB cable connected to the monitor. If the 
problem persists, install the “USB Monitor Installation 
Driver” from the provided CD. For more information, refer to 
the Manual Installation section.  
3. When the installation is finished, reboot your PC. 
My computer is on 
and the LED is 
blinking. However, 
only a blank screen is 
displayed on the 
monitor. Check whether the 
USB cable is 
connected correctly.Connect the USB cable again.
Check whether your 
computer is in 
hibernation mode (The 
monitor turns off).Move your mouse or press any key to display the screen 
again.
 
 
 
 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 a 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 the adapter(video) 
driver and the monitor driver.  
4. Check if the scanning ratio of the video screen is set at 56 Hz ~ 75 Hz.  
(Do not exceed 75 Hz 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? The 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 function at BIOS-SETUP of the 
computer or the screen saver. (Refer to Windows/Computer 
Manual).  
How can I clean the outer case/LCD 
Panel?Disconnect the power cord and then clean the monitor with a soft 
cloth, using either a cleaning solution or plain water.  
 
Do not leave any detergent or scratches on the case. Do not let any 
water enter the monitor. 
How can I remove the “USB Monitor 
Installation Program” completely?1.Click ‘Add/Remove Programs’ in the ‘Control Panel’. A list of 
‘currently installed programs’ is displayed. 
 
						

							2. Select ‘Samsung UbiSync Monitor’ from the list and click 
‘Remove’. 
There is no response when I right-
click “Samsung UbiSunc (P:) (USB 
Monitor)” in the “My Computer” 
window and click “Eject” in the 
displayed menu.Though your USB monitor is recognized as a drive by your PC, it has 
been designed so that the context menu usually displayed when 
right-clicking on the “My Computer” window does not work.
The screen size of the USB monitor is 
larger than the actual monitor size.If the primary monitor has a high resolution, screens are expanded 
beyond the recommended resolution in Clone mode (USB monitor). 
(Recommended resolution: 1280x1024)  
The screen size of the USB monitor is 
smaller than the actual monitor size. 
The screen is centered on the 
monitor.If the primary monitor has a high resolution, screens are smaller than 
the recommended resolution in Clone mode (USB monitor). 
(Recommended resolution: 1280x1024)
I disconnected or turned off my USB 
monitor but my PC still displays the 
old monitor information in the Display 
Properties window.The deactivated USB monitors are such that the power to them is 
turned off or their USB cables are disconnected. To remove this 
information, you have to remove the Samsung Ubisync Monitor 
program from ‘Add/Remove Programs’ in the ‘Control Panel’. 
If you remove the program you cannot use all the connected USB 
monitors. If you want to use the USB monitor again, you have to 
setup the installation program again.
Icons and photos are broken or 
jagged in Clone mode (USB monitor).This occurs because Windows does not send the screen updating 
information to Clone mode if Extended mode is active on a single 
PC. 
We recommend using the monitor in Extend mode.
How I can clone or extend screen 
mode?Open the “Display Properties” window and select the “Settings” tab, 
Configure the screen mode in the “Settings” tab. 
- For more information on how to configure the settings, click here. 
 
 
 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 cable; 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, a message 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 radios, 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, Video 
mode not supported, etc. In this case, first check the source of the problem, and then contact the 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 60 
Hz 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 Name SyncMaster 940UX
LCD Panel
Size 19  Diagonal (48 cm)
Display area 376.32 mm (H) x 301.056 mm (V)
Pixel Pitch 0.294 mm (H) x 0.294 mm (V)
Synchronization
Horizontal 30~81 kHz
Vertical 56~75 Hz
Display Color
16.7M
Resolution
Optimum resolution 1280 x 1024@60 Hz 
Maximum resolution 1280 x 1024@75 Hz 
Input Signal, Terminated
RGB Analog, DVI(Di gital Visual Interface) Co mpliant Digital RGB, USB 
0.7 Vp-p ± 5 % 
TTL level (V high  ≥ 2.0V, V low 
≤ 0.8V)
Maximum Pixel Clock
140MHz (Analog,Digital,USB) 
Power Supply
AC 100-240 V ( ± 10 %), 60/50Hz ± 3Hz
Signal Cable
15pin-to-15pin D-sub cable, Detachable, DVI-D to DVI-D connector, Detachable, 
USB cable , Detachable
Signal Connectors
15pin 3-row D-sub connector, 24pin 3-row DVI-D connector, USB UP Stream
Dimensions (WxHxD) /  Weight (Without Stand)
 
						

							407.6 X 335.0 X 65.4 mm / 16.04 x 13.18 x 2.57 inch
Dimensions (WxHxD) / Weight (With Stand)
407.6 X 408.0 X 200.0 mm / 16.04 x 16.06 x 7.87 inch / 5.2 kg / 11.46 lbs
VESA Mounting Interface
75.0 mm x 75.0 mm 
Environmental considerations
Operating Temperature: 50°F ~ 104°F (10°C ~ 40°C)  Humidity: 10 % ~ 80 %, non-condensing
Storage Temperature: -4°F ~ 113°F (-20°C ~ 45°C)  Humidity: 5 % ~ 95 %, non-condensing 
Plug and Play Capability
This monitor can be installed on any Plug & Play compatible system. Interaction of the monitor and computer 
systems will provide the best 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 pixe ls 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 produ ct are 3,932,160.  
Note: Design and specificat ions are subject to change without prior notice.
Class B Equipment (Information Communi cation equipment for residential use)
This product complies with the Electromagnetic Compatibility Directives for residential use and can be used in 
all areas including common residential areas.  
 
(Class B equipment emits less electromagnetic waves than Class A equipment.)
 
 
 
 PowerSaver  
This monitor has a built-in power 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 automatically 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 system operates with a VESA DPM compliant 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  Power off 
(Power button)  
Power Indicator Blue Blue Blinking Off
Power Consumption less than 42.0 Watts Analog/Digital less than 2 Watts
USB less than 5 Watts less than 0.5 watts(120Vac)
 
 
 
						

							  
 
 
Display ModeHorizontal 
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  37.500 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  46.875 75.000 49.500  +/+ 
VESA, 800 x 600  48.077 72.188 50.000  +/+ 
VESA, 1024 x 768  48.363 60.004 65.000  -/- 
VESA, 1024 x 768  56.476 70.069 75.000  -/- 
VESA, 1024 x 768  60.023 75.029 78.750  +/+ 
VESA, 1152 x 864  67.500 75.000 108.000  +/+ 
VESA,1280 x 1024 79.97675.025135.000 +/+ 
VESA,1280 x 1024  63.98160.020 108.000  +/+ 
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 Fr equency or Refresh Rate. Unit: Hz
 
 Preset Timing Modes 
If the signal transferred from the computer is the 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 
 
						

							 
 
 Contact SAMSUNG WORLDWIDE 
 
If you have any questions or comments  relating to Samsung products, please contact 
the SAMSUNG customer care center.   
 
 
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