BenQ Dx819st Users Manual

							Introduction 11
Remote control
1. ON/OFF
Toggles the projector between standby 
mode and on.
2. Source selection buttons 
(COMPUTER 1, COMPUTER 2, 
VIDEO, S-VIDEO, HDMI
)
Selects an input source for display.
3. MENU/EXIT
Turns on the On-Screen Display (OSD) 
menu. Goes back to previous OSD menu, 
exits and saves menu settings.
4. Left/
Decreases the projector volume. 
5. ECO BLANK
Used to hide the screen picture.
6. Keystone/Arrow keys ( / Up,  /
Down)
Manually corrects distorted images 
resulting from an angled projection.
7. LASER
Emits visible laser pointer light for 
presentation purposes.8. ZOOM+/ZOOM-
Magnifies or reduces the projected picture 
size.
9. PAGE +/PAGE -
Operate your display software program 
(on a connected PC) which responds to 
page up/down commands (like Microsoft 
PowerPoint).
10. FREEZE
Freezes the projected image.
11. NETWORK SETTING
Displays the Network Settings OSD 
menu.
12. NETWORK
(No function.)
13. AUTO
Automatically determines the best picture 
timings for the displayed image.
2
1
3
4
5
76
8
91011
1261314
1615
17
2021
1819
22
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							Introduction
12
Remote control effective range
The remote control must be held at an angle within 30 degrees perpendicular to the 
projectors IR remote control sensor(s) to function correctly. The distance between the 
remote control and the sensor(s) shou ld not exceed 8 meters (~ 26 feet).
Make sure that there are no obstacles between the remote control and the IR sensor(s) on 
the projector that might obstruct the infra-red beam.
14. Right/
Increases the projector volume. 
When the On-Screen Display (OSD) menu 
is activated, the #4, #6, and #14 keys are 
used as directional arrows to select the 
desired menu items and to make 
adjustments.
15. MODE/ENTER Selects an available picture setup mode.
Activates the selected On-Screen Display 
(OSD) menu item.
16. SOURCE Displays the source selection bar.
17. MIC/VOL +/MIC/VOL - (No function.)
18. ASPECT Selects the display aspect ratio. 
19. MUTE Toggles projector audio between on and 
off. 
20. SMART ECO Displays the  Lamp Mode
 menu for 
selecting a suitable lamp operating mode.
21. TEST
Displays the test pattern. 22. Numeric buttons
Enters numbers in network settings.
Operating the  LASER pointer
The Laser Pointer is a 
presentation aid for 
professionals. It emits red 
colored light when you press it.
The laser beam is visible. It is 
necessary to press and hold 
LASER  for continuous output. 
Do not look into the laser light 
window or shine the laser light beam on yourself or 
others. See the warning me ssages on the back of the 
remote control prior to using it.
The laser pointer is not a toy. Parents should be 
mindful of the dangers of laser energy and keep 
this remote control out of the reach of children.
•  Operating the projector from the front•  Operating the projector from the rear
A p
p ro x
.
  +
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A
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 +
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							Introduction 13
Replacing the remote control batteries
1. To open the battery cover, turn the remote control over to view its back, push on 
the finger grip on the cover and slide it up in the direction of the arrow as illustrated. 
The cover will slide off.
2. Remove any existing batteries (if necessary) and install two AAA batteries observing 
the battery polarities as indicated in the base of the battery compartment. Positive 
(+) goes to positive and negative (-) goes to negative.
3. Refit the cover by aligning it with the base and sliding it back down into position. Stop 
when it clicks into place.
•  Avoid leaving the remote control and batteries in an excessive heat or humid environment like the 
kitchen, bathroom, sauna, sunroom or in a closed car.
•  Replace only with the same or equivalent type recommended by the battery manufacturer.
•  Dispose of the used batteries according to the manufacturers instructions and local environment 
regulations for your region.
•  Never throw the batteries into a fire. There may be danger of an explosion.
•  If the batteries are dead or if you will not be using the remote control for an extended period of time, 
remove the batteries to avoid damage to the remote control from possible battery leakage.
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							Positioning your projector 14
Positioning your projector
Choosing a location
Your projector is designed to be installed in one of four possible installation locations: 
Your room layout or personal preference will dictate which installation location you select. 
Take into consideration the size and position of your screen, the location of a suitable 
power outlet, as well as the location and distance between the projector and the rest of 
your equipment.1. Front Table
Select this location with the projector 
placed on the table in front of the screen. 
This is the most common way to position 
the projector for quick setup and 
portability.
2. Front Ceiling
Select this location with the projector 
suspended upside-down from the ceiling in 
front of the screen.
Purchase the BenQ Projector Ceiling 
Mount Kit from your dealer to mount your 
projector on the ceiling.
Set Front Ceiling in the SYSTEM 
SETUP: Basic > Projector Installation 
menu after you turn the projector on.3. Rear Ceiling
Select this location with the projector 
suspended upside-down from the ceiling 
behind the screen.
Note that a special rear projection screen 
and the BenQ Projector Ceiling Mount Kit 
are required for this installation location.
Set Rear Ceiling in the SYSTEM 
SETUP: Basic > Projector Installation 
menu after you turn the projector on.
4. Rear Table
Select this location with the projector 
placed on the table behind the screen.
Note that a special rear projection screen 
is required.
Set Rear Table in the SYSTEM SETUP: 
Basic > Projector Installation menu 
after you turn the projector on.
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							Positioning your projector 15
Obtaining a preferred projected image size
The distance from the projector lens to the screen, the zoom setting, and the video format 
each factors in the projected image size.
Projection dimensions 
Refer to Dimensions on page 56 for the center of lens dimensions of this projector before 
calculating the appropriate position.
The screen aspect ratio is 4:3 and the projected picture is in a 4:3 aspect ratio
For example, if you are using an 120-inch screen, the recommended projection distance is 
1481 mm and the vertical offset is 274 mm.
If your measured projection distance is 2.5 m (2500 mm), the closest match in the (b) 
Distance from screen column is 2469 mm. Looking across this row shows that a 200 
(about 5.1 m) screen is required.
All measurements are approximate and may vary from the actual sizes.
BenQ recommends that if you intend to permanently install the projector, you should physically test the 
projection size and distance using the actual projector in situ before you permanently install it, so as to make 
allowance for this projectors optical characteristics. This will help you determine the exact mounting position 
so that it best suits your installation location.
(a)
(b)Center of lens Screen
(c)
(a) Screen size(b) Distance from screen
(mm)(c) Vertical offset
(mm)DiagonalHeight
(mm)Width
(mm)
Inchesmm
80 2032 1219 1626 988 183
100 2540 1524 2032 1235 229
120 3048 1829 2438 1481 274
150 3810 2286 3048 1852 343
180 4572 2743 3658 2222 411
200 5080 3048 4064 2469 457
220 5588 3353 4470 2716 503
240 6096 3658 4877 2963 549
270 6858 4115 5486 3333 617
300 7620 4572 6096 3704 686
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							Connection 16
Connection
When connecting a signal source to the projector, be sure to:
1. Turn all equipment off before making any connections.
2. Use the correct signal cables for each source.
3. Ensure the cables are firmly inserted.
•  In the connections shown below, some cables may not be included with the projector (see Shipping 
contents on page 8). They are commercially available from electronics stores.
•  The connection illustrations below are for reference only. The rear connecting jacks available on the 
projector vary with each projector model.
•  Many notebooks do not turn on their external video ports when connected to a projector. Usually a key 
combo like FN + F3 or CRT/LCD key turns the external display on/off. Locate a function key labeled CRT/
LCD or a function key with a monitor symbol on the notebook. Press FN and the labeled function key 
simultaneously. Refer to your notebooks documentation to find your notebooks key combination.
•  The D-Sub output only works when an appropriate D-Sub input is made to the COMPUTER-1 jack.
1. VGA cable
2. VGA to DVI-A cable
3. USB cable
4. HDMI cable
5. Component Video to VGA (D-Sub) 
adapter cable6. Audio L/R cable
7. S-Video cable
8. Video cable
9. Audio cable
999121364578
Notebook or desktop computer
Speakers
orA/V device Monitor
(DVI) (VGA)
or
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							Connection 17
•  If you wish to use this connection method when the projector is in standby mode, make sure the 
Monitor Out function is turned on in the SYSTEM SETUP: Advanced menu. See Standby Settings 
on page 44 for details.
Connecting video source devices
You need only connect the projector to a video source device using just one of the 
connecting methods, however each provides a different level of video quality. The method 
you choose will most likely depend upon the availability of matching terminals on both the 
projector and the video source device as described below:
Connecting audio
The projector has built-in speaker(s) which are designed to provide basic audio 
functionality accompanying data presentations for business purposes only. They are not 
designed for, nor intended for stereo audio reproduction use as might be expected in 
home theater or home cinema applications.
The built-in speaker(s) will be muted when the AUDIO-OUT jack is connected.
•  The projector is only capable of playing mixed mono audio, even if a stereo audio input is connected. See 
Connecting audio on page 17 for details.
•  If the selected video image is not displayed after the projector is turned on and the correct video source 
has been selected, check that the video source device is turned on and operating correctly. Also check 
that the signal cables have been connected correctly.
Te r m i n a l  n a m eTerminal appearancePicture quality
HDMI
Best
Component Video
Better
S-Video
Good
Video
Normal
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							Operation 18
Operation
Starting up the projector
1. Plug the power cord into the projector and into a 
power outlet. Turn on the power outlet switch 
(where fitted). Check that the POWER indicator 
light on the projector lights orange after power has 
been applied.
Please use the original accessories (e.g. power cord) only with the 
device to avoid possible dangers such as electric shock and fire.
2. Press  POWER or  ON to start the 
projector. As soon as the lamp lights up, a Power On Ring Tone will be heard. 
The POWER indicator light flashes green and stays green when the projector is 
on.
The start up procedure takes about 30 seconds. In the later stage of start up, a 
startup logo is projected.
(If necessary) Rotate the focus ring to adjust the image clearness.
To turn off the ring tone, see Turning off the Power On/Off Ring Tone on page 33 
for details.
If the projector is still hot from previous activity, it will run the cooling fan for approximately 90 seconds 
before energizing the lamp.
3. If the projector is activated for the first time, 
select your OSD language following the on-
screen instructions.
4. If you are prompted for a password, press the 
arrow keys to enter a six-digit password. See 
Utilizing the password function on page 22 
for details.
5. Switch all of the connected equipment on.
6. The projector will start to search for input 
signals. The current input signal being scanned displays in the upper left corner of the 
screen. If the projector doesnt detect a valid signal, the message “No Signal” will 
continue displaying until an input signal is found.
You can also press SOURCE on the projector or remote control to select your 
desired input signal. See Switching input signal on page 24 for details.
If the frequency/resolution of the input signal exceeds the projectors operating range, you will see the 
message “Out of Range” displayed on the background screen. Please change to an input signal which is 
compatible with the projectors resolution or set the input signal to a lower setting. See Timing chart on 
page 60 for details.
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							Operation 19
Adjusting the projected image
Adjusting the projection angle
To adjust the projector:
1. Press the quick-release button and lift the front 
of the projector. Once the image is positioned 
where you want it, release the quick-release 
button to lock the foot in position. 
2. Screw the rear adjuster foot to fine-tune the 
horizontal angle.
To retract the foot, hold up the projector while pressing 
the quick-release button, then slowly lower the projector. 
Screw the rear adjuster foot in a reverse direction.
If the projector is not placed on a flat surface or the 
screen and the projector are not perpendicular to 
each other, the projected image becomes trapezoidal. 
To correct this situation, see Correcting keystone 
on page 20 for details.
Auto-adjusting the image
In some cases, you may need to optimize the picture quality. To do this, press AUTO on 
the projector or remote control. Within 3 seconds, the built-in Intelligent Auto 
Adjustment function will re-adjust the values of Frequency and Clock to provide the best 
picture quality. 
The current source information will be displayed in the corner of the screen for 3 seconds.
This function is only available when PC signal (analog RGB) is selected.
Fine-tuning the image clarity
Sharpen the image by rotating the focus ring.
21
Do not look into the lens while the 
lamp is on. The strong light from the 
lamp may cause damage to your eyes.
Be careful when you press the quick-
release button as it is close to the 
exhaust vent where hot air comes 
from.
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							Operation 20
Correcting keystone
Keystoning refers to the situation where the projected image is noticeably wider at either 
the top or bottom. It occurs when the projector is not perpendicular to the screen. 
To correct this, follow ONE of these steps:
•  Press  /  on the projector or remote 
control to display the Keystone correction page. 
Press   to correct keystoning at the top of 
the image. Press   to correct keystoning at 
the bottom of the image.
•  Using the OSD menu
1. Press MENU/EXIT and then press  /  until the DISPLAY menu is highlighted.
2. Press  to highlight Keystone and press MODE/ENTER. The Keystone 
correction page displays.
3. Press   to correct keystoning at the top of the image. Press   to correct 
keystoning at the bottom of the image.
Press/.Press /.
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