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

							We l c o m e
PB8140 / PB8240 / PB8250 Digital Projector
Installation Series
User’s Manual 
						

							Copyright
Copyright 2004 by BenQ Corporation. All rights reserved. No part of this publication may be repro-
duced, transmitted, transcribed, stored in a retrieval system or translated into any language or com-
puter language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, 
manual or otherwise, without the prior written permission of this company.
Disclaimer
BenQ Corporation makes no representations or warranties, either expressed or implied, with respect 
to the contents hereof and specifically disclaims any warranties, merchantability or fitness for any 
particular purpose. Further, BenQ Corporation reserves the right to revise this publication and to 
make changes from time to time in the contents hereof without obligation of this company to notify 
any person of such revision or changes.
*DLP, Digital Micromirror Device and DMD are trademarks of Texas Instruments. Others are copy-
rights of their respective companies or organizations. 
						

							Table of Contents iii
Table of Contents
Important Safety Instructions ...............................  1
Introduction ...........................................................  5
Projector Features  ......................................................................... 5
Shipping Contents ......................................................................... 6
Optional Accessories  ...................................................................................... 7
Projector Exterior View  ................................................................ 7
Front / Upper View  ........................................................................................ 7
Back View ........................................................................................................ 7
Bottom View  ................................................................................................... 7
Connector Panel  ............................................................................................. 8
Controls and Functions  ................................................................ 9
External Control Panel  ................................................................................... 9
Remote Control Description  ....................................................................... 10
Remote Control Effective Range  ................................................................. 11
Installing or Replacing the Batteries  ............................................................ 12
Setting Up Your Projector ...................................  13
Choosing a Location  ................................................................... 13
Making Connections ................................................................... 13
Connecting to a Laptop or Desktop Computer .......................................... 14
Connecting Equipment to the Component Video Input ........................... 14
Connecting to Video or S-Video Devices  ................................................... 15
Connecting to Display Devices  .................................................................... 15
Adjusting the Height  ................................................................... 16
Screen Size  ................................................................................... 16
Operation .............................................................  18
Start Up ........................................................................................ 18
Shutdown ..................................................................................... 19
Digital Keystone Correction  ....................................................... 20
Source Selection  .......................................................................... 21
Auto Adjustment ......................................................................... 21
Blank ............................................................................................ 22
Zoom / Focusing  ......................................................................... 22 
						

							Table of Contents iv
Laser Pointer Operation  ............................................................. 22
Mouse Function Operation  ........................................................ 23
Zoom In + / Zoom Out - ............................................................ 23
Volume Adjustment  ................................................................... 23
PIP (Picture In Picture) Operation ............................................ 23
Freeze ........................................................................................... 24
Preset Mode Selection ................................................................. 24
Menu Operation  ......................................................................... 25
Menu System ................................................................................................ 25
Using the menus  .......................................................................................... 26
1. Display Menu  ........................................................................................... 27
2. Image Menu  ............................................................................................. 29
3. Source Menu   ........................................................................................... 31
4. Control Menu  .......................................................................................... 33
5. PIP (Picture In Picture) Menu  ................................................................ 35
Maintenance ......................................................... 36
Cleaning the lens  .......................................................................................... 36
Cleaning the projector case  ......................................................................... 36
Cleaning and replacing the air filters  .......................................................... 36
Storing the projector .................................................................................... 37
Transporting the projector  .......................................................................... 37
Lamp Information  ...................................................................... 38
Use and Replacement of the Lamp  ............................................................. 38
Lamp Replacement  ...................................................................................... 38
Temp Warning Light  ................................................................................... 40
Indicators ..................................................................................................... 40
Service Information  .................................................................... 43
Accessories (included in the standard package) ......................................... 43
Optional Accessories (not included in the standard package)  .................. 43
Ordering Parts or Getting Information  ...................................................... 43
Troubleshooting ................................................... 44
Common Problems & Solutions  ................................................ 44
Specifications ........................................................ 45
Projector Specifications  .............................................................. 45
Technical Specifications  .............................................................................. 45
Timing Chart ............................................................................... 47 
						

							Table of Contents v
Supported timing for PC (including DVI-I) input  .................................... 47
Supported timing for YPbPr input .............................................................. 47
Supported timing for Video and S-Video inputs  ....................................... 47
Dimensions...........................................................  48
Warranty...............................................................  49
Limited Warranty ........................................................................ 49
Regulation Statements .........................................  50
FCC Statement  ............................................................................ 50
EEC Statement ............................................................................. 50
MIC Statement  ............................................................................ 50 
						

							Table of Contents vi 
						

							Important Safety Instructions 1
Important Safety Instructions
Your BenQ projector is designed and tested to meet the latest standards for safety of infor-
mation technology equipment. However, to ensure safe use of this product, it is important 
that you follow the instructions mentioned in this manual and marked on the product.   
Caution
•To prevent shock, do not open the 
cabinet. There are no user-serviceable 
parts inside. 
•Please read this user’s manual before 
you operate your projector. Save this 
user’s manual for future reference.   
•Do not look straight at the projector 
lens during operation. The intense 
light beam may damage your eyes. •Refer servicing to qualified service 
personnel.    
•Always open the lens shutter or 
remove the lens cap when the 
projector lamp is on. 
• In some countries, the line voltage is 
NOT stable. This projector is designed 
to operate safely within a mains 
voltage of 100 to 240 volts, but could 
fail if power cuts or surges of ±10 volts 
occur. In areas where the mains 
voltage may fluctuate or cut out, it is 
recommended that you connect your 
projector through a power stabilizer, 
surge protector or uninterruptible 
power supply (UPS).  
						

							Important Safety Instructions 2  
Safety Instructions
1. The lamp becomes extremely hot 
during operation. Allow the projec-
tor to cool for approximately 45 
minutes prior to removing the lamp 
assembly for replacement. 
2. Do not operate lamps beyond the 
rated lamp life. Excessive operation 
of lamps beyond the rated life could 
cause them to explode on rare occa-
sions. 
3. Never replace the lamp assembly or 
any electronic components unless 
the projector is unplugged. 4. Do not place this product on an 
unstable cart, stand, or table. The 
product may fall, sustaining serious 
damage. 
5. To reduce the risk of electric shock, 
do not disassemble this appliance. 
Take it to a qualified technician 
when service or repair is required. 
Incorrect reassembly can cause 
cause malfunction of the projector 
or electric shock when the appliance 
is subsequently used. 
6. This product is capable of displaying 
inverted images for ceiling mount 
installation. Please use BenQ’s Ceil-
ing Mounting Kit for mounting the 
unit and ensure it is securely 
installed.  
						

							
Important Safety Instructions 3
       
Safety Instructions (Continued)
7. Do not place this projector in any of 
the following environments. 
- Space that is poorly ventilated or confined. Allow at least 50 cm clearance 
from walls and free flow of air around 
the projector. 
- Locations where temperatures may  become excessively high, such as the 
inside of a car with all windows rolled 
up.
- Locations where excessive humidity,  dust, or cigarette smoke may 
contaminate optical components, 
shortening the projector’s life span and 
darkening the image.
- Locations near fire alarms
- Locations with an ambient temperature  above 35°C / 95°F
- Locations where the altitudes are higher  than 10000 feet.
8. Do not block the ventilation holes. 
- Do not place this unit on a blanket, 
bedding or any other soft surface. 
- Do not cover this unit w ith a cloth or any  other item. 
- Do not place inflammables near the  projector.   
If the ventilation holes are seriously 
obstructed, overheating inside the unit 
may result in a fire.
9. Always place the unit on a level, hori-
zontal surface during operation.
- Do not use if tilted at an angle of more than 10 degrees left to right, nor at angle 
of more than 15 degrees front to back. 
Using the unit when it is not fully 
horizontal may cause a malfunction of, 
or damage to, the lamp.  
10. Do not stand the unit on end verti-
cally.  
Doing so may cause the unit to fall over, 
causing injury or resulting in damage to 
the unit.
ft.
10000 
						

							Important Safety Instructions 4
Safety Instructions (Continued)
11. Do not step on the projector or place 
any objects upon it. 
Besides probable physical damage to the 
projector, doing so may result in accidents 
and possible injury.
12. Do not place liquids near or on the pro-
jector. Liquids spilled into the projector 
may cause it to fail. If the projector does 
become wet, disconnect it from the 
power supply’s wall socket and call 
BenQ to have the projector serviced.