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...

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...

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...

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...

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...

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...

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...

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...

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...

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...