BenQ Pb2250 Digital Projector Mobile Series Users Manual

							Introduction 7
Projector exterior view
Front / Upper side
Rear side
Bottom side
External control panel 
(See page 8 for 
detailed information.)
Front IR remote sensor
Ventilation grillFront adjuster buttonProjection lens Focus ring and zoom 
ring
AC power cord inlet Kensington lock hole
S-Video
Video
Audio
D
-Sub USB
Ventilation grill S-Video socketRear IR remote sensor
Audio socketRGB signal input (PC/ 
YPbPr/ YCbCr) socket USB socketVideo socket
Lamp cover
Rear adjuster foot Rear adjuster foot Front adjuster footFront adjuster button 
						

							Introduction 8
Controls and functions
External control panel
LeftRightUp Down
PB2250
1
2
3
9
6
8 511 10
4
7 1213
1. Power (Refer to pages 17 and 21 for 
more information.)
Turns the projector on or off.
2. Menu
Opens, saves and exits the on-screen 
menu.
3. Down 6
4.5 Up
5.3 Left
6. Right 4
The #2 to #6 buttons are used to select 
the desired menu items and to make 
adjustments when the on-screen 
menu is activated. Refer to page 23 for 
more information.
When the on-screen menu is not 
activated, the 3 Left and Right 4 
buttons function as Ke ystone -/+ hot 
keys. Refer to page 19 for more 
information. 
7. Source (Refer to page 21 for informa-
tion.)
Sequentially selects the input signal 
RGB/YPbPr, Video, or S-Video.
8. Auto (Refer to page 19 for more infor-
mation.)
Automatically determines the best 
picture settings for the displayed 
image. 9. Power indicator light (Refer to page 
32 for more information.)
Lights up or flashes when the 
projector is under operation. 
10. Temperature warning light (Refer to 
page 32 for more information.)
Flashes red if the projector’s 
temperature becomes too high. 
11. Lamp indicator light (Refer to page 32 
for more information.)
Indicates the status of the lamp. 
Lights up or flashes when the lamp 
has developed a problem.
12. Zoom ring (Refer to page 19 for more 
information.)
Adjusts the size of the image.
13. Focus ring (Refer to page 19 for more 
information.)
Adjusts the focus of the projected 
image. 
						

							Introduction 9
Remote control description
    
FunctionsDescriptions
PowerTurns the projector on or off. Refer to pages 17 and 21 for more 
information.
Freeze The image is frozen when Freeze is pressed. A “Pause” icon will 
appear in the lower right corner of the screen. To release the 
function, press Freeze again, or Source (this will change the 
input source and release the pause function).
5Up, Menu
3Left / Right4, 
6 DownUsed to select the desired menu items and to make adjustments. 
Refer to page 23 for more information.
Auto 
keystoneAutomatically corrects trapezoidal distortion resulting from the 
angle of projection. Refer to page 19 for more information.
KeystoneManually corrects distorted images resulting from the angles of 
projection. Refer to page 19 for more information.
Page Up and 
DownConnect the projector to your PC or notebook with a USB cable 
prior to using this function. You can operate your display 
application (like a Power Point presentation) moving forwards 
and backwards.
AutoAutomatically determines the best picture settings for displayed 
image. Refer to page 19 for more information.
SourceSequentially select the input signal RGB, Component Video, S-
Video or
 Video. Refer to page 21 for information.
BlankHides the image. Refer to page 21 for more information.
PowerII
  Keystone 
Auto Freeze
II/
Menu
 6 Down
Preset Source
Blank Page Up / Down
3 Left / Right 4 5Up
 Auto
AUTO
II
II/
AUTO 
						

							Introduction 10
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 
sensors should not exceed 6 meters (~ 20 feet). 
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.
If the remote control stops working, or if its effective range decreases, replace the battery with 
new ones.
Installing or replacing the remote control battery
1. Pull out the battery holder.
2. Insert the new battery in the holder.
3. Push the holder into the remote control.
Avoid excessive heat and humidity. There may 
be danger of damage to the remote and injury 
to those nearby if the battery is incorrectly 
replaced. 
Replace only with the same or equivalent type 
recommended by the manufacturer. 
Dispose of the used battery according to the 
manufacturer’s instructions.
Never throw a battery into a fire.
If the battery is dead or if you will not be using the remote control for a long time, remove the 
battery to prevent damage to the remote control from possible battery leakage.
PresetAccording to the selected input signal, there are several picture 
setup options available: Vivid mode, Presentation mode, Gaming 
mode, Video mode, Cinema mode and Economic mode. Refer to 
page 24 for more information.
6 M 
						

							Positioning your projector 11
Positioning your projector
Choosing a location
Your projector is designed to be installed in one of four possible installation locations: 
1. Floor in front of screen; 
2. Ceiling in front of screen; 
3. Floor at rear of screen; or 
4. Ceiling at rear of screen. 
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.
I. Floor front: Select this location with the projector 
placed near the floor in front of the screen. This is the 
most common way to position the projector for quick 
setup and portability.
II. Ceiling front: Select this location with the 
projector suspended from the ceiling in front of the 
screen.
Purchase the BenQ Projector Ceiling Mounting Kit 
from your dealer to mount your projector on the 
ceiling.
Set   in the Advance > Mirror menu after you turn 
the projector on.
III. Floor rear: Select this location with the projector 
placed near the floor behind the screen.
Note that a special rear projection screen is required.
Set  in the Advance > Mirror menu after you turn 
the projector on.
IV. Ceiling rear: Select this location with the projector 
suspended from the ceiling behind the screen.
Note that a special rear projection screen and the 
BenQ Projector Ceiling Mounting Kit are required for 
this installation location.
Set  in the Advance > Mirror menu after you turn 
the projector on. 
						

							Positioning your projector 12
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. BenQ has provided separate tables of dimensions 
for both 16:9 and 4:3 screen ratios to assist you in determining the ideal location for your 
projector.
1. Determine the aspect ratio of your screen (4:3 or 16:9).
2. Determine the projection distance allowed in your room. Install the projector at a 
proper distance from the screen.
3. Refer to the table of 4:3 or 16:9 Screen Size depending on your screen ratio. Locate the 
suitable value in the column of “Distance from Screen”. In the same row, you will find 
the maximum and minimum projected image sizes.
4. Determine the preferred height of your projector.
For example, if you are using a 4:3 screen with 2.5 meters projection distance, the maximum 
image size is close to 1.91 meters diagonal.
If you place the projector above or below the screen, you have to tilt it down or up to center 
the image on the screen after turning the projector on. In these situations, some image 
distortion will occur. Use the Keystone function to correct the distortion. See page 19 for 
keystone correction.
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Zoom ring
Focus ring 
						

							Positioning your projector 13
The recommended focus range is from 1.5 ~ 8 meters (6 ~ 32 feet).
There is 3% ~ 5% tolerance among these numbers due to optical component variations.
* 1 m = 3.28 feet, 1 foot = 0.305 m
Screen size chart (4:3 aspect ratio)
Distance
from screenDiagonal measurementDistance from
screenDiagonal measurement
Minimum
zoomMaximum
zoomMinimum
zoomMaximum
zoom
feet inch feet inch feet inch meter cm meter cm meter cm
4 48 2.49 29.9 3.05 36.6 1 100 0.62 62.2 0.76 76.2
6 72 3.73 44.8 4.57 54.9 1.5 150 0.93 93.3 1.14 114.3
8 96 4.98 59.7 6.10 73.2 2 200 1.24 124.5 1.52 152.4
10 120 6.22 74.7 7.62 91.4 2.5 250 1.56 155.6 1.91 190.5
12 144 7.47 89.6 9.14 109.7 3 300 1.87 186.7 2.29 228.6
14 168 8.71 104.5 10.67 128.0 3.5 350 2.18 217.8 2.67 266.7
16 192 9.96 119.5 12.19 146.3 4 400 2.49 248.9 3.05 304.8
18 216 11.20 134.4 13.72 164.6 4.5 450 2.80 280.0 3.43 342.9
20 240 12.45 149.4 15.24 182.9 5 500 3.11 311.2 3.81 381.0
22 264 13.69 164.3 16.76 201.2 5.5 550 3.42 342.3 4.19 419.1
24 288 14.94 179.2 18.29 219.5 6 600 3.73 373.4 4.57 457.2
26 312 16.18 194.2 19.81 237.7 6.5 650 4.04 404.5 4.95 495.3
28 336 17.42 209.1 21.34 256.0 7 700 4.36 435.6 5.33 533.4
30 360 18.67 224.0 22.86 274.3 7.5 750 4.67 466.7 5.72 571.5
32 384 19.91 239.0 24.38 292.6 8 800 4.98 497.8 6.10 609.6
34 408 21.16253.9 25.91 310.9 8.5 850 5.40 539.8 6.48 647.7
Screen size chart (16:9 aspect ratio)
Distance
from screenDiagonal measurementDistance from
screenDiagonal measurement
Minimum
zoomMaximum
zoomMinimum
zoomMaximum
zoom
feet inch feet inch feet inch meter cm meter cm meter cm
4 48 2.29 27.5 2.80 33.6 1 100 0.57 57.4 0.70 70.0
6 72 3.44 41.3 4.20 50.4 1.5 150 0.86 86.0 1.05 105.0
8 96 4.59 55.1 5.60 67.2 2 200 1.15 114.7 1.40 140.0
10 120 5.74 68.8 7.00 84.0 2.5 250 1.43 143.4 1.75 179.4
12 144 6.88 82.6 8.40 100.8 3 300 1.72 172.1 2.10 209.9
14 168 8.03 96.4 9.80 117.6 3.5 350 2.01 200.8 2.45 244.9
16 192 9.18 110.1 11.20 134.4 4 400 2.29 229.4 2.80 279.9
18 216 10.32 123.9 12.60 151.2 4.5 450 2.58 258.1 3.15 314.9
20 240 11.47 137.7 14.00 167.9 5 500 2.87 286.8 3.50 349.9
22 264 12.62 151.4 15.39 184.7 5.5 550 3.15 315.5 3.85 384.9
24 288 13.77 165.2 16.79 201.5 6 600 3.44 344.1 4.20 419.9
26 312 14.91 179.0 18.19 218.3 6.5 650 3.37 372.8 4.55 454.9
28 336 16.06 192.7 19.59 235.1 7 700 4.02 401.5 4.90 489.8
30 360 17.21 206.5 20.99 251.9 7.5 750 4.30 430.2 5.25 524.8
32 384 18.35 220.3 22.39 268.7 8 800 4.59 458.9 5.60 559.8 
						

							Connection 14
Connection
When connecting a signal source to the projector, be sure to:
1. Turn all of the equipment off before making any connections.
2. Use the correct signal cables for each source.
3. Ensure that the cables are firmly inserted. 
Connecting to a laptop or desktop computer
 
A Mac adapter (an optional accessory) is needed if you are connecting to Macintosh 
computers. 
Many laptops 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 laptop. Press FN and the 
labeled function key simultaneously. Refer to your laptop’s documentation to learn your 
laptop’s key combination.
S-Video
Video
Audio
D-Sub USB
VGA  ca ble
To RGB input RGB
USB cable
USBUSB
Audio cable
PC audioPC audio
VG A  c a b l e
RGBTo RGB input 
						

							Connection 15
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, either a standard 
VGA (D-sub) output, or a YP
bPr (default) format. 
The projector is capable of accepting digital TV data through a Component Video 
connector. Use a Component Video cable (optional accessory) to display these images.
The following standards are supported in the digital TV function:     
Connecting Video and S-Video devices
• 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)
S-Video
Video
Audio
D-Sub USB
AV  e q u i p m e n tYPbPr
Component Video Cable 
(optional accessory)
RGB
S-Video
Video
Audio
D-Sub USB
S-Video devices
S-Video cable
Audio cable 
						

							Connection 16 
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 is turned on and operating 
correctly. Also check that the signal cables have been connected correctly.
S-Video
Video
Audio
D-Sub USB
Audio cable Video cable
Video devices