BenQ Dv3251 Users Manual

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Disclaimer
BenQ Corporation makes no representations or warranties, either expressed or implied, with 
respect to the contents of this Users Manual. Be nQ Corporation reserves the right to revise this 
publication and to make changes from time to time in the contents thereof without obligation to 
notify any person of such revision or changes.
Copyright
Copyright 2005 BenQ Corporation (www.benq.com). All rights reserved. 
No part of this publication may be reproduced,  transmitted, transcribed, stored in a retrieval 
system or translated into any language or co mputer language, in any form or by any means, 
electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior 
written permission of BenQ Corporation.
Battery safety notice
The use of the wrong type of batteries may cause  chemical leaks and/or explosion. Please note 
the following:
• Always ensure that the batteries are inserted wi th the positive and negative terminals in the 
correct direction as shown in the battery compartment.
• Different types of batteries have different characteristics. Do not mix different types.
• Do not mix old and new batteries. Mixing old and new batteries will shorten battery life and/ or cause chemical leaks from the old batteries.
• When batteries fail to function, replace them immediately.
• Chemicals which leak from batteries may cause  skin irritation. If any chemical matter seeps 
out of the batteries, wipe it up immediately using a dry cloth.
• Due to varying storage conditions, the battery life for the batteries included with your display  may be shortened. Replace them within 3 months  or as soon as you can after initial use.
Functions and features
• 1366 x 768 native image resolution providing true widescreen TV 16:9 aspect ratio
• 500 cd/m
2 brightness 
• 800:1 contrast ratio 
• Compatible with digital television formats, including 480i / 480p / 576i / 576p / 720p / 1080i
• 2:2 Pull Down Recovery (PAL); 3:2 Pull Down Recovery (NTSC)
• Multiple preset picture modes 
• Picture In Picture display function
• Ceiling or wall mountable
•Graphic OSD 
• Constant audio output
• Several function shortcut Remote Control buttons including: Input selection, Preset Picture modes, Freeze  frame, Aspect ratio control, PIP, Sleep timer, 
Back-light adjustment, Display Information, Teletext, Stereo/bi-lingual sound options.
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Dimensional drawings
Unit: mm
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Specifications
Design and specifications are subject to change without notice.
ModelV32S/DV3251/DV3253
Weight 20 Kg (Net)
Display Dimensions 997 (W) x 593.5 (H) x 123.5 (D) mm
LCD Panel Size 80 cm (31.5 inches)
Aspect ratio 16:9
Native resolution 1366 x 768
Brightness 500 cd/m
2
Contrast ratio 800:1
Viewing angle (left/right/up/down) 85º/85º/85º/85º
Response time 8 ms grey to grey
Amplifier 8W x 2, 80Hz ~ 20KHz 
Signal inputsTV Analog PAL TV tuner
Video
S-Video
Composite video (RCA)
Composite video (SCART - Cenelec)
Component video (Y P
B/CB PR/CR)
Audio input
Graphic HDMI
DVI (via HDMI)
PC D-sub
PC/DVI audio
Signal outputs RCA type audio output
Minijack type headphone output
Component Video timings 480i  / 480p / 576i / 576p / 720p / 1080i
PC horizontal frequency 31.5 ~ 60 kHz
PC horizontal frequency tolerance ± 0.5 kHz
PC vertical frequency 60 ~ 75 Hz
PC vertical frequency tolerance ± 0.5 Hz
Power supply AC 220-240V, 50/60 Hz
Power consumption 180 Watts
Operating temperature 0 ~40  (at sea level)
Storage temperature -10  ~ 50 (at sea level)
Video Systems NTSC, PAL, SECAM
Audio Systems A2, NICAM
° C °C
° C °C
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Supported PC (D-Sub/DVI) Input Signal Timing
Supported Video (Component/DVI) Input Signal Timing
• PC (D-Sub/DVI) and Video (Component/DVI) timing modes outside of these tables are not 
recognised and will not be displayed.
• To gain the best quality image on the display, you should select 1024 x 768 @60Hz as your PC  source resolution, and select the 4:3 aspect ratio on the display when viewing PC input. 
• If the picture contains movement or character shimmering when the signal timing is changed, 
activate the Auto function in the Picture menu to recalibrate the image. See  Auto on page 29.
• To fill the entire screen with a PC i nput signal, set the aspect ratio to 16:9.
ResolutionHorizontal 
Frequency (Khz)Ve r t ic a l  
Frequency (Hz)Dot Clock 
Frequency (Mhz)Note
720 x 400 31.467 70.082 28.32 VGA
640 x 480 31.469 59.94 25.175 VGA
640 x 480 37.861 72.819 31.5 VGA
640 x 480 37.5 75 31.5 VGA
800 x 600 37.9 60.317 40 SVGA
800 x 600 48.077 72.188 50 SVGA
800 x 600 46.875 75 49.5 SVGA
1024 x 768 48.363 60 65 XGA
1024 x 768 56.476 70.069 75 XGA
1024 x 768 60.023 75.029 78.75 XGA
1360 x 768 47.7 60 85.5
ResolutionHorizontal 
Frequency (Khz)Ve r t ic a l  
Frequency (Hz)Dot Clock 
Frequency (Mhz)Note
720 x 480i (not 
available for DVI  input) 15.73 59.94 13.5 Interlaced
720 x 576i (not 
available for DVI  input) 15.62 50 13.5 Interlaced
720 x 480p 31.47 59.94 27 Progressive
720 x 576p 31.25 50 27 Progressive
1280 x 720p59 44.955 59.94 74.176 Progressive
1280 x 720p60 45 60 74.25 Progressive
1280 x 720p50 37.5 50 74.25 Progressive
1920 x 1080i59 33.716 59.94 74.176 Interlaced
1920 x 1080i60 33.75 60 74.25 Interlaced
1920 x 1080i50 28.13 50 74.25 Interlaced
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Aspect ratio behaviour
According to the signal sources connected to the display, the input video images may have 
different native aspect ratios. Aspect ratio refers to the ratio between the length and width of the 
video image. For example, standard definition TV video images have a 4:3 native aspect ratio, 
while HDTV video images have a 16:9 native aspect ratio.
Your display is a digital display device that is capable of displaying video images in various 
aspect ratios regardless of their native aspect ratios. Please refer to the descriptions below for the 
selectable aspect ratios of the display and the resultant video images.
The Real, Letter Box and Wide options are unavailable when PC or DVI (via the HDMI input) is the 
signal source.
16:9
No matter what the aspect of the image source, resizes the image linearly and non-
proportionately 
to fit the full 16:9 screen. This may alter the resultant displayed image aspect, 
depending upon the aspect of the image source.
16:9 is most suitable for images which are already in a 16:9 aspect, like HDTV, as it displays 
them without any aspect alteration. This differs f rom the Wide aspect setting (described below) 
in that 16:9 uses 
linear image resizing, whereas Wide uses non-linear resizing.
4:3
Resizes the image linearly and non-proportionately to a 4:3 aspect ratio, no matter what the 
aspect of the image source. In this mode, only an area of 1024 x 768 pixels in the center of the 
screen is used to display images.
4:3 is most suitable for images which are alread y in a 4:3 aspect, like standard definition TV, as 
it displays them without any aspect alteration.  However, on this 16:9 aspect screen, there will be 
Original (source) video imageResultant (displayed) video image
4:3 aspect ratio video image
Letterboxed video image 16:9 aspect ratio video image
Original (source) video imageResultant (displayed) video image
4:3 aspect ratio video image
Letterboxed video image 16:9 aspect ratio video image
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black (unlit) vertical bars visible on the vertical  edges of the screen on either side of the image, 
marking the difference between the width of a  4:3 aspect image and a 16:9 screen of the same 
height.
Letterbox
Resizes and scales the image proportionately and linearly at a given zoom ratio which can reach 
full screen, no matter what the aspect of the  image source. This does not alter the displayed 
image aspect.
Letterbox scales the image to a larger size than  the screen on the expectation that the source is 
presented in a 4:3 aspect ratio. Th is effectively enlarges the size of the image so that the width 
matches the width of the screen, and the height stretches beyond the height of the screen to give 
a 16:9 ratio version of the original 4:3 image, resu lting with the cropping of the top and bottom 
of the original 4:3 image. Some of the image is cropped and lost (not visible on-screen).
Letterbox is most suitable for images which are  displayed in the so-called letterbox presentation 
format, which is created f rom a 16:9 aspect ratio image 
scaled down proportionally to fit into a 
4:3 aspect display frame, resulting in black (unlit) horizontal bars visible on the image top and 
bottom marking the difference  between the height of a 16:9 aspect image and a 4:3 screen of the 
same width.
Wide
Resizes the image non-linearly, no matter what the aspect of th e image source. This may alter the 
resultant displayed image aspect.
Wide 
non-linearly resizes the height of the image until it matches the full display height, and 
non-linearly resizes the width of the image until it matches the full display width. Non-linear 
resizing typically alters the image more towards the edges of the image, leaving the centre 
relatively unaltered. 
Non-linear resizing is useful for 4:3 aspect  ratio images. This differs from 
Original (source) video imageResultant (displayed) video image
4:3 aspect ratio video image
Letterboxed video image or
16:9 aspect ratio video image
Original (source) video imageResultant (displayed) video image
4:3 aspect ratio video image
Letterboxed video image 16:9 aspect ratio video image
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the 16:9 aspect setting in that 16:9 uses linear image resizing, whereas Wide uses non-linear 
resizing. All of the available image is displayed and none is cropped or lost.
Real
Displays the image in a one-to-one pixel mapping  in the centre of the screen without alteration 
or resize.
Original (source) video imageResultant (displayed) video image
4:3 aspect ratio video image
Letterboxed video image 16:9 aspect ratio video image or
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Troubleshooting
There are a very many external influences and circumstances beyond the control of BenQ which 
may be causing problems with  your BenQ LCD display. Some of the more common and user 
fixable problems are listed below for your assistance. 
Please check the following list before calling your nearest BenQ Customer Service Center, and 
attempt the following steps to diagnose and fix the problem yourself: 
TV
SymptomsPossible Causes
Power does not turn ON • Check that the power plug is securely inserted into both the 
AC Mains socket on the display and the wall outlet, and that 
the wall outlet is switched on.
• Check that power is available from the wall outlet by trying  another appliance or desk lamp from that same wall outlet.
There is no picture or sound • Ensure the display power is ON (Indicated by the green 
Power indicator on the front of the unit)
• Try a different input source to check whether the source is  at fault.
• Check for mis-connection of cables or for wrong input  source.
There are spots on the screen  Your TV antenna signal is being affected by interference from 
automobiles, trains, high-voltage transmission lines, neon 
signs or another sources of interference. Try redirecting or 
relocating your antenna to reduce the affects of the 
interference. If the antenna is exterior, have a suitable 
qualified and experienced antenna specialist adjust the 
antenna.
Degraded colours or hue • Check whether all the picture adjustments have been 
properly performed. 
•Press the  Preset   button on the remote control to select a 
different picture mode.
Improper screen position or size Try selecting a different aspect ratio by pressing the
 Aspect 
/  button on the remote control.
The image appears distorted Ensure the displays aspect ratio is correctly set to suit the 
image source.
The image appears too bright, 
and there is a loss of definition 
in the brightest areas of the 
image • Reduce the contrast setting.
• The DVD player is set for a high-level output.
• The AV video signal has not been terminated properly 
somewhere in the external AV equipment.
The image appears too washed 
out, or the darkest areas of the 
image appear too bright. • Reduce the brightness level till
 the black areas of the picture 
appear as black.
• The DVD player may be set at too high a brightness level.
Power indicator lamp flashes 
red. • Check the PC cable for disconnection.
• This indicates the PC input has been selected with no PC 
source signal available. 
• The display has been placed in PC Standby mode.
Out of range appears The PC input signal resolution is set too high. 1360 x 768 @ 
60Hz is the highest acceptable PC timing. 
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Antenna
Remote control does not 
function properly• Check for incorrect battery orientation.
• Check for dead batteries
• Check your distance and angle from the display.
• Check whether remote control is properly being pointed at 
the displays remote control sensor window.
• Check for any obstacle between the remote control and the  remote control sensor window. 
• Check that the remote control sensor window is not under  strong fluorescent lighting.
• Check for any devices (PC or personal digital assistant,  PDA) nearby that transmit infrared signal which may cause 
interference to signal transmission between the remote 
control and the LCD display. Turn off the infrared function 
of these devices.
There is no picture or sound, 
just noise. • Make sure the antenna cable is properly connected.
• Change programs to confirm if the symptom is still present.
Picture is not clear. • Make sure the antenna cable is properly connected.
• Change programs to confirm if the symptom is still present.
• If PC is selected as the inpu
t signal source, use the Auto 
function in the Picture Menu to let the display adjust 
picture automatically. Select Real as the display aspect ratio.
No sound. • Check whether you have selected Mute for Audio setting.
• Make sure the volume is not set to minimum.
• Check the AV cables for disconnection.
• Check to see that the Speaker Out option is set to Off in 
the Audio menu.
SymptomsPossible Causes
The picture is not sharp or the 
picture contains image 
movement. • The reception may be weak.
• Change programs to confirm if the symptom is still 
present.
• Make sure the outside antenna is not disconnected.
• Make sure the antenna is facing the right direction.  If the antenna is exterior, have a suitable qualified and 
experienced antenna specialist adjust the antenna.
The picture is doubled or tripled • Make sure the antenna is facing the right direction.
• Picture ghosting is caused by reflections from buildings, 
large metal structures and mountains. Carefully realign 
your antenna to minimise the  ghost images. Ultimately a 
higher quality antenna professionally installed may be 
necessary to reduce the ghosting.
The picture is spotted • There may be interference from automobiles, trains, high 
voltage lines, neon lights, etc.
• There may be interference between the antenna cable and  power cable. Try positioning them further apart.
There are stripes on the screen or 
colours faded • Is the display receiving interference from other devices? 
Transmission antennas of radio broadcasting stations and 
transmission antennas of amateur radios and cellular 
phones may also cause interference.
• Use the display as far away as possible from devices that  may cause possible interference.
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