BenQ Ob8140/pb8240/pb8250 Digital Projector Installation Series Users Manual

							Introduction 5
Introduction
Projector Features
The projector integrates high-performance optical engine projection and a user-friendly 
design to deliver high reliability and ease of use.
The projector offers the following features:
• Full-function remote control with laser pointer/ remote mouse function
• High quality manual zoom lens
• One-key auto-adjustment to display the best picture quality
• Digital keystone correction to correct distorted images 
• Adjustable color balance control for data/video display
• Ultra-high brightness projection lamp
• Ability to display 16.7 million colors 
• On-screen menus in 10 languages: English, French, German, Italian, Spanish, Russian, 
Traditional Chinese, Simplified Chinese, Japanese and Korean.
• Switchable Normal/ Economic mode to reduce the power consumption
• Powerful AV function to provide high quality AV picture
• HDTV compatibility (YP
bPr)
• Two PC input terminals and one PC output terminal
• Replaceable air filter
Note: The brightness of the projected image will vary depending on the ambient lighting con-
ditions and contrast/brightness settings. 
						

							
Introduction
6
Shipping Contents
The projector is shipped with the cables requir ed for connection to a PC and to video equip-
ment. Carefully unpack and verify that you have  all of the items shown below. If any of these 
items are missing, please contact your place of purchase.  
Projector Soft Carry Case User’s Manual
         Batteries       3-2 Power Converter User’s Manual CD Quick Start Guide Warranty Booklet
Remote Control S-Video Cable Vid eo Cable VGA Cable Audio Cables
USEU
UK
      USB Cable     D-Sub - DVI Cable Power Cord 110V Power Cord 220V Power Cord 240V
Component Video Cable
PB8250
Digital Projector
installation Series
Users Maunal
P/N:53.J9401.001 
						

							
Introduction 7
Optional Accessories
Projector Exterior View
Front / Upper View
Back View
Bottom View
1. Macintosh adapter
2. 250W / 300W lamp module
3. Ceiling mount kit4. Wireless Pro
5. Presentation Pro
6. DVI-I cable
External control panel 
(See page 
9 for detailed 
information.)
Kensington lock slot
Front adjuster buttonProjection lens adjuster
Projection lens
Front adjuster button
AC power inlet
Main power switch Front IR remote sensor
Air filter grill 
(See page  36 for detailed information.)
Rear adjuster
Connector panel
(See page  8 for more 
information.) Ventilation grill 
Back IR remote sensor
Lamp door
Rear adjuster
Rear adjuster Front adjuster
Front adjuster 
						

							Introduction 8
Connector Panel
RGB signal input(PC/ YPbPr/ YCbCr)
USB connector RGB
 signal outputS-Video jack
Audio/ Video 
connectorPC Audio jack DVI-I connector
RS 232 control portFor external control 
systems and used by 
service personnel. 
						

							Introduction 9
Controls and Functions
External Control Panel
1
2 39
8 4 11 10
5
7
612 13
1. Power (Refer to page 18 for more infor-
mation.)
Turns the projector on or off.
2. Source (Refer to page 21 for more 
information.)
Sequentially selects the input signal 
RGB, DVI, YP
bPr,  S-Video or Video.
3.3 Left 
4. Right 4 
When the on-screen menu is not 
activated, #3 and #4 function as 
Ke ystone -/+ hot keys.
Refer to page 20 for more information.
5.5Exit
Exits and saves the menu settings.
6.6Menu
Turns the on-screen display control 
menu on.
When the on-screen menu is activated, 
the #3 to #6 buttons are used as 
directional arrows to select the desired 
menu items and to make adjustments. 
Refer to page 26 for more information.
7. Auto (Refer to page 21 for more infor-
mation.)
Automatically determines the best 
picture timings for the displayed 
image. 8. Blank (Refer to page 22 for more infor-
mation.)
Used to hide the screen image. You can 
press Blank again or Return to bring 
the image back.
9. Power indicator light
Lights up or flashes when the projector 
is under operation. 
10. Temperature warning light (Refer to 
page 40 for more information.)
Flashes red if the projector’s 
temperature becomes too high. 
11. Lamp indicator light (Refer to page 38 
for more information.)
Indicates the status of the lamp. Lights 
up or flashes when the lamp has 
developed a problem.
12. Zoom ring 
Adjusts the size of the image.
13. Focus ring 
Adjusts the focus of the projected 
image. 
						

							Introduction 10
Remote Control Description 
Front View 
Notes on Remote Control Operation
Make sure that there are no obstacles between the remote control and the IR sensors on the
projector that might obstruct the infra-red beam.
6Down/ Menu (26)
3 Left/ Keystone -  
4 Right/ Keystone + (20)
Auto (21)
L-Click/   R-click (23)
Zoom in +/ Zoom out - (23)
 Return (23, 24)
PIP Size (23)
 Freeze (24)
LED (22)
 Laser Pointer (22)Source (21)
Blank (22)
Mouse Pad (23)
 Drag (23)
Volume +/- (23)
Mute (23)
Preset (34) PIP Position (23)
PIP Source (23)
Power (18, 19)
 Exit (26) 
						

							
Introduction 11
Remote Control Effective Range
Infra Red (IR) remote control sensors are located on the front and the back of the projector. 
The remote control must be held at an angle within 30 degrees of the projector’s IR remote 
control sensors to function correctly. The distance between the remote control and the sen-
sors should not exceed 6 meters (19.5 feet).
Warning Messages on the Back of the Remote Control 
The laser beam is visible. It
is necessary to depress
the Laser button for contin-
uous output. 
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.
6m
ATTENTION
LASER DIODE
ACHTUNG 
						

							Introduction 12
Installing or Replacing the Batteries
Avoid excessive heat and humidity. There may be danger of an explosion if the batteries are
incorrectly replaced. Replace only with the same or equivalent type recommended by the
manufacturer. Dispose of the used batteries according to the manufacturer’s instructions.
Push and open the 
battery compartment 
lid in the direction 
shown.1Install batteries as 
indicated by the 
diagram inside the 
compartment.2Position the lid over 
the compartment 
and snap it back 
into place.3 
						

							Setting Up Your Projector 13
Setting Up Your Projector
Choosing a Location
Your projector is designed to be installed in the four installation configurations shown here: 
Floor front, Ceiling front, Floor rear, Ceiling rear. Your room layout or personal preference 
will dictate which installation configuration you use.  
For further information on the four configurations, please refer to page 31.
If you place the projector above or below the screen, you have to tile it down or up to center 
the image on the screen, in these situations image distortion will occur. Use the Keystone 
function to correct the distortion. See page 20 for keystone correction.
Making Connections
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. 
I. Floor front II. Ceiling front
III. Floor rearIV. Ceiling rear 
						

							Setting Up Your Projector 14
Connecting to a Laptop or Desktop Computer 
A Mac adapter (an optional accessory) may be necessary if you are connecting to an older 
Macintosh computers. 
The USB cable is required if you intend using mouse functions on the remote control.
Connecting Equipment to the Component Video Input
The projector is capable of displaying various High Definition TV display modes. Some of 
these sources are:  
Most of these sources will provide an analog component video output, a standard VGA out-
put, or a YP
bPr (default) format. 
The projector is capable of accepting HDTV data through a Component Video connector. 
Use a Component Video cable that came with your projector to display these images.
The following standards are supported in the HDTV function:     
RGBVGA  c a bl e
To  R G B  i n p u t
USB cable
USB
PC audio
RGBTo  R G B
input
USBPC
audio
VGA  ca b leAudio cable
• Digital-VHS (D-VHS) player • DVD player
•Satellite Dish HDTV receiver •Digital TV tuners
• 480i • 480p
• 576i • 576p
• 720p (50/ 60 Hz) • 1080i (50/ 60 Hz)
AV  e q u i p m e n t
YPbPr
Component Video cable
RGB