ViewSonic VA1948a LED Manual

							3
Getting Started
Congratulations on your purchase of a ViewSonic® LCD display.
Important! Save the original box and all packing material for future shipping needs.
NOTE: The word “Windows” in this user guide refers to Microsoft Windows operating 
system.
Package Contents
Your LCD display package includes: •  LCD display
•  Power cord
•  Audio cable (stereo mini jack, for VA1948m-LED only)
•  D-Sub cable
•  Quick Start Guide
•  ViewSonic CD
 
- User Guide
 
- INF/ICM files*
 
- Registration information
 
- Additional software (Optional)
NOTE: The INF file ensures compatibility with Windows operating systems, and 
the ICM file (Image Color Matching) ensures accurate on-screen colors. ViewSonic 
recommends that you install both the INF and ICM files.
 
						

							4
Quick Installation
1. Connect video cable 
• Make sure both the LCD display and computer are turned OFF.
•  Remove rear panel covers if necessary.
•  Connect the video cable from the LCD display to the computer.
Macintosh users: Models older than G3 require a Macintosh adapter. Attach the 
adapter to the computer and plug the video cable into the adapter.
To order a ViewSonic
® Macintosh adapter, contact ViewSonic Customer Support.
2.  Connect power cord (and AC/DC adapter if required)
3.  Turn ON LCD display and computer
Turn ON the LCD display, then turn ON the computer. This sequence (LCD 
display before computer) is important.
NOTE: Windows users may receive a message asking them to install the INF file. 
To access the file, please use the directory ":\CD\vsfiles".
4.  Insert the ViewSonic CD into the computer’s CD drive.
If your computer does not have a CD-ROM drive, please refer to Customer 
Support page.
5.  Windows users: Set the timing mode (example: 1024x768)
For instructions on changing the resolution and refresh rate, see the graphics 
card’s user guide.
6.  Installation is complete. Enjoy your new ViewSonic LCD display.
Additional Software Installation (Optional)
1. Load the ViewSonic CD on your CD/DVD drive.
2.  Double click on the "Software" folder and choose an application, if desired.
3.  Double click on the Setup.exe file and follow the onscreen instructions to 
complete the simple installation.
(VA1948a-LED)
(VA1948m-LED)
 
						

							5
Wall Mounting (Optional)
NOTE: For use only with UL Listed Wall Mount Bracket.
To obtain a wall-mounting kit or height adjustment base, contact ViewSonic
® or 
your local dealer. Refer to the instructions that come with the base mounting kit. To 
convert your LCD display from a desk-mounted to a wall-mounted display, do the 
following:
1.  Verify that the power button is turned Off, then disconnect the power cord.
2.  Lay the LCD display face down on a towel or blanket.
3.  Remove the base. (Screws removal might be required.)
4.  Find and identify one of the following VESA mount interfaces (a,b,c) located on 
the back of your display (refer to “Specifications” page for your displays mounting 
interface). Attach the mounting bracket from the VESA compatible wall mounting 
kit using screws of the appropriate length.
  a.              b.          c.
75mm75mm
100mm 100mm100m
m 100m
m
200mm
5. Attach the LCD display to the wall, following the instructions in the wall-mounting 
kit.
 
						

							6
Using the LCD Display
Setting the Timing Mode
Setting the timing mode is important for maximizing the quality of the screen image 
and minimizing eye strain. The timing mode consists of the resolution  (example 
1024 x 768) and  refresh rate (or vertical frequency; example 60 Hz). After setting 
the timing mode, use the OSD (On-screen Display) controls to adjust the screen 
image.
For optimal picture quality, please use the recommended timing mode specific to 
your LCD display listed on the “Specification” page.
To set the Timing Mode: •  Setting the resolution:  Access "Appearance and Personalization" from Control 
Panel via the Start Menu, and set the resolution.
•  Setting the refresh rate: See your graphic card’s user guide for instructions.
IMPORTANT: Please make sure that your graphics card is set to 60Hz vertical 
refresh rate as the recommended setting for most LCD displays. Choosing a non-
supported timing mode setting may result in no image being displayed, and a 
message showing “Out of Range” will appear on screen.
OSD and Power Lock Settings
•  OSD Lock: Press and hold [1] and the up arrow ▲ for 10 seconds. If any buttons 
are pressed the message  OSD Locked will display for 3 seconds.
•  OSD Unlock: Press and hold [1] and the up arrow ▲ again for 10 seconds.
•  Power Button Lock:  Press and hold [1] and the down arrow ▼ for 10 seconds. 
If the power button is pressed the message  Power Button Locked will display 
for 3 seconds. With or without this setting, after a power failure, your LCD 
display’s power will automatically turn ON when power is restored.
•  Power Button Unlock:  Press and hold [1] and the down arrow ▼ again for 10 
seconds.
 
						

							7
Adjusting the Screen Image
Use the buttons on the front control panel to display and adjust the OSD controls 
which display on the screen.
Standby Power On/Off
Power light
Blue = ON
Orange = Power Saving
[1] Displays the Main Menu or exits the control screen and saves 
adjustments.
[2] Displays the control screen for the highlighted control.
(VA1948a-LED) 
Also a shortcut to Auto Image Adjust.
(VA1948m-LED)  Also a shortcut to toggle analog and digital 
connection.
▲/▼ Scrolls through menu options and adjusts the displayed control.
(VA1948a-LED) 
Contrast (▼) / Brightness (▲)
(VA1948m-LED)  Audio Adjust (▼) / Contrast (▲)
Do the following to adjust the display setting:
1.  To display the Main Menu, press button [1].
NOTE: All OSD menus and adjustment screens disappear automatically after 
about 15 seconds. This is adjustable through the OSD timeout setting in the 
setup menu.
2.  To select a control to adjust, press ▲ or ▼ to scroll up or down in the Main 
Menu.
3.  After the desired control is selected, press button [2].
4.  To save the adjustments and exit the menu, press button [1] until OSD 
disappear.
The following tips may help you optimize your display: •  Adjust the computer’s graphics card to support a recommended timing mode 
(refer to “Specifications” page for recommended setting specific to your LCD 
display). To find instructions on “changing the refresh rate”, please refer to the 
graphics card’s user guide.
•  If necessary, make small adjustments using H. POSITION and V. POSITION 
until the screen image is  completely visible. (The black border around the edge 
of the screen should barely touch the illuminated “active area” of the LCD 
display.)
 
						

							8
Main Menu Controls
Adjust the menu items by using the up ▲ and down ▼ buttons.
NOTE: Check the Main Menu items on your LCD OSD and refer to Main Menu 
Explanation below.
Main Menu Explanation
AAudio Adjust
adjusts the volume, mutes the sound, or toggles between inputs if you 
have more than one source.
Auto Image Adjust
automatically sizes, centers, and fine tunes the video signal to eliminate 
waviness and distortion. Press the [2] button to obtain a sharper image.
NOTE: Auto Image Adjust works with most common video cards. If this 
function does not work on your LCD display, then lower the video refresh 
rate to 60 Hz and set the resolution to its pre-set value.
BBrightness
adjusts background black level of the screen image.
CColor Adjust
provides several color adjustment modes, including preset color 
temperatures and a User Color mode which allows independent 
adjustment of red (R), green (G), and blue (B). The factory setting for this 
product is native.
Contrast
adjusts the difference between the image background (black level) and 
the foreground (white level).
IInformation
displays the timing mode (video signal input) coming from the graphics 
card in the computer, the LCD model number, the serial number, and 
the ViewSonic
® website URL. See your graphics card’s user guide 
for instructions on changing the resolution and refresh rate (vertical 
frequency).
NOTE: VESA 1024 x 768 @ 60Hz (example) means that the resolution is 
1024 x 768 and the refresh rate is 60 Hertz.
 
						

							9
Input Select
toggles between inputs if you have more than one computer connected to 
the LCD display.
MManual Image Adjust
displays the Manual Image Adjust menu. You can manually set a variety 
of image quality adjustments.
Memory Recall
returns the adjustments back to factory settings if the display is operating 
in a factory Preset Timing Mode listed in the Specifications of this 
manual.
Exception: This control does not affect changes made with the 
Language Select or Power Lock setting.
SSetup Menu
adjusts On-screen Display (OSD) settings.
 
						

							10
Other Information
Specifications
LCDType
Display Size
Color Filter
Glass Surface TFT (Thin Film Transistor), Active Matrix 1440 x 900 LCD,
0.2835 mm pixel pitch
Metric: 48 cm
Imperial: 19” (18.95” viewable)
RGB vertical stripe
Anti-Glare
Input Signal Video Sync RGB analog (0.7/1.0 Vp-p, 75 ohms)
TMDS Digital (100ohms) (For VA1948m-LED only)
Separate Sync
f
h:24-82 kHz, fv:50-75 Hz
Compatibility  PC
Macintosh
1Up to 1440 x 900 Non-interlaced
Power Macintosh up to 1440 x 900
Resolution
2Recommended
Supported 1440 x 900 @ 60 Hz
1280 x 1024 @ 60, 75 Hz
1280 x 960 @ 60, 75 Hz
1280 x 800 @ 60, 75 Hz
1024 x 768 @ 60, 70, 72, 75 Hz
800 x 600 @ 56, 60, 72, 75 Hz
640 x 480 @ 60, 75 Hz
720 x 400 @ 70 Hz
Power Voltage 100-240 VAC, 50/60 Hz (Auto switch)
Display area Full Scan 408.24 mm (H) x 255.15 mm (V)
16.07” (H) x 10.05” (V)
Operating 
conditions Temperature
Humidity
Altitude +32°F to +95°F (0°C to +35°C)
10% to 90%  (non-condensing)
To 10,000 feet
Storage 
conditions Temperature
Humidity
Altitude -4°F to +140°F (-20°C to +60°C)
10% to 80% (non-condensing)
To 40,000 feet
Dimensions  Physical 456 mm (W) x 378 mm (H) x 220 mm (D)
17.97” (W) x 14.88” (H) x 8.66” (D)
Wall Mount Distance 100 x 100 mm
Weight Physical 7.04 lbs (3.2 kg)
Power saving 
modes On
Off (VA1948a-LED) 15W (Typical) (Blue LED)
(VA1948m-LED) 18W (Typical) (Blue LED)

						

							11
Cleaning the LCD Display
• MAKE SURE THE LCD display IS TURNED OFF.
•  NEVER SPRAY OR POUR ANY LIQUID DIRECTLY ONTO THE SCREEN OR 
CASE.
To clean the screen:
1.  Wipe the screen with a clean, soft, lint-free cloth. This removes dust and other 
particles.
2.  If the screen still not clean, apply a small amount of non-ammonia, non-alcohol 
based glass cleaner onto a clean, soft, lint-free cloth, and wipe the screen.
To clean the case:
1.  Use a soft, dry cloth.
2.  If the case still not clean, apply a small amount of a non-ammonia, non-alcohol 
based, mild non-abrasive detergent onto a clean, soft, lint-free cloth, then wipe 
the surface.
Disclaimer •  ViewSonic
® does not recommend the use of any ammonia or alcohol-based 
cleaners on the LCD display screen or case. Some chemical cleaners have been 
reported to damage the screen and/or case of the LCD display.
•  ViewSonic will not be liable for damage resulting from use of any ammonia or 
alcoholbased cleaners.
 
						

							12
Troubleshooting
No power•  Make sure power button (or switch) is ON.
•  Make sure A/C power cord is securely connected to the LCD display.
•  Plug another electrical device (like a radio) into the power outlet to verify that the 
outlet is supplying proper voltage.
Power is ON but no screen image •  Make sure the video cable supplied with the LCD display is tightly secured to 
the video output port on the back of the computer. If the other end of the video 
cable is not attached permanently to the LCD display, tightly secure it to the LCD 
display.
•  Adjust brightness and contrast.
•  If you are using an Macintosh older than G3, you need a Macintosh adap
Wrong or abnormal colors •  If any colors (red, green, or blue) are missing, check the video cable to make 
sure it is securely connected. Loose or broken pins in the cable connector could 
cause an improper connection.
•  Connect the LCD display to another computer.
•  If you have an older graphics card, contact ViewSonic
® for a non-DDC adapter. 
Control buttons do not work •  Press only one button at a time.