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...

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...

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...

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...

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...

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...

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,...

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.