BenQ Projector TH670 User Manual

							Digital Projector
User Manual
TH670 
						

							Table of contents 2
Important safety 
instructions ................... 3
Introduction.................. 7
Projector features ..................................... 7
Shipping contents ...................................... 8
Projector exterior view.........................10
Controls and functions ..........................11
Positioning your 
projector ..................... 16
Choosing a location ................................16
Obtaining a preferred projected image 
size ..............................................................17
Connection ................. 19
Connecting a computer .........................20
Connecting Video source devices .......21
Operation ................... 24
Starting up the projector ......................24
Adjusting the projected image .............25
Using the menus ......................................28
Securing the projector ...........................31
Switching input signal .............................33
Selecting the aspect ratio ......................34
Optimizing the image .............................36
Advanced picture quality controls ......39
Hiding the image......................................42
Operating in a high altitude 
environment .............................................42
Adjusting the sound ................................43
Locking control keys ..............................43
Personalizing the projector menu 
display ........................................................44
Select the lamp saver mode..................44
Shutting down the projector ................45Menu operation ...................................... 46
Maintenance ............... 60
Care of the projector ............................ 60
Lamp information ................................... 61
Troubleshooting......... 69
Specifications.............. 70
Dimensions .............................................. 71
Ceiling mount installation ..................... 71
Timing chart ............................................. 72
Warranty and Copyright 
information ................. 76
Ta b l e  o f  c o n t e n t s 
						

							Important safety instructions 3
Important safety instructions
Your projector is designed and tested to meet the latest standards for safety of 
information 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. 
Safety Instructions
1.Please read this manual before 
you operate your projector. 
Save it for future reference. 
2.Do not look straight at the 
projector lens during 
operation. The intense light beam 
may damage your eyes. 
3.Refer servicing to qualified 
service personnel. 4.Always open the lens shutter 
or remove the lens cap when 
the projector lamp is on. 
5. In some countries, the line voltage 
is NOT stable. This projector is 
designed to operate safely within a 
mains voltage between 100 to 240 
volts AC, 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). 
6. Do not block the projection lens 
with any objects when the 
projector is under operation as this 
could cause the objects to become 
heated and deformed or even cause 
a fire. 
						

							Important safety instructions 4
 
Safety Instructions (Continued)
7. The lamp becomes extremely hot 
during operation. Allow the 
projector to cool for 
approximately 45 minutes prior 
to removing the lamp assembly 
for replacement. 
8. Do not operate lamps beyond the 
rated lamp life. Excessive 
operation of lamps beyond the 
rated life could cause them to 
break on rare occasions. 
9. Never replace the lamp assembly 
or any electronic components 
unless the projector is unplugged. 10. Do not place this product on an 
unstable cart, stand, or table. The 
product may fall, sustaining 
serious damage. 
11. Do not attempt to disassemble 
this projector. There are 
dangerous high voltages inside 
which may cause death if you 
should come into contact with 
live parts. 
Under no circumstances should 
you ever undo or remove any 
other covers. Refer servicing only 
to suitably qualified professional 
service personnel.
12. When the projector is under 
operation, you may sense some 
heated air and odor from its 
ventilation grill. It is a normal 
phenomenon and not a product 
defect. 
						

							Important safety instructions 5
  
Safety Instructions (Continued)
13. 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 projectors life span 
and darkening the image.
- Locations near fire alarms
- Locations with an ambient 
temperature above 40°C / 104°F
- Locations where the altitudes are 
higher than 3000 m (10000 feet).14. Do not block the ventilation holes. 
- Do not place this projector on a 
blanket, bedding or any other soft 
surface. 
- Do not cover this projector with a 
cloth or any other item. 
- Do not place inflammables near the 
projector.   
If the ventilation holes are seriously 
obstructed, overheating inside the 
projector may result in a fire.
15. Always place the projector on a 
level, horizontal 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 
projector when it is not fully 
horizontal may cause a malfunction 
of, or damage to, the lamp. 
3000 m
(10000 
feet)
0 m
(0 feet) 
						

							Important safety instructions 6
Safety Instructions (Continued)
16. Do not stand the projector on end 
vertically. Doing so may cause the 
projector to fall over, causing injury 
or resulting in damage to the 
projector.
17. 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.18. Do not place liquids near or on the 
projector. Liquids spilled into the 
projector may cause it to fail. If the 
projector does become wet, 
disconnect it from the power 
supplys wall socket and call BenQ 
to have the projector serviced.
19. This product is capable of displaying 
inverted images for ceiling mount 
installation. 
Use only BenQs Ceiling 
Mount Kit for mounting the 
projector and ensure it is 
securely installed.  
						

							Introduction 7
Introduction
Projector features
This model is one of the best projectors available in the world. You can enjoy the best 
video quality across various devices such as PC, laptop, DVD and VCR even document 
camera to bring all possibility to life.
The projector offers the following features.
• Basic and Advanced menu types for your selection.
• USB A supports USB charging (cant support USB reader)
• Wall color correction allowing projection on surfaces of several 
predefined colors
• Auto source speeding up the signal detecting process
• Color management allowing color adjusents to your liking
• Selectable quick cooling function makes the projector cool in a shorter 
time
• One-key auto-adjustment to display the best picture quality
• Component HDTV compatibility (YP
bPr)
• Less than 0.5 W power consumption in standby mode
• The apparent brightness of the projected image will vary depending on the 
ambient lighting conditions, selected input signal contrast/brightness settings, 
and is proportional to projection distance.
• The lamp brightness will decline over time and may vary within the lamp 
manufacturers specifications. This is normal and expected behavior. 
						

							Introduction 8
Shipping contents
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.
Standard accessories
The supplied accessories will be suitable for your region, and may differ from those 
illustrated.
*The warranty card is only supplied in some specific regions. Please consult your 
dealer for detailed information.
Projector Remote control & batteries
Power cord Warranty card*
Quick start guide User manual CD 
						

							Introduction 9
Optional accessories
1. Spare lamp kit
2. Ceiling mount kit3. carry bag
4. 3D glasses 
						

							Introduction 10
Projector exterior view
1. External control panel 
(See Projector on page 11 for 
details.)
2. Lamp cover
3. Focus ring
4. Quick-release button
5. Lens cover
6. Projection lens
7. Front IR remote sensor
8. Security bar
9. Ventilation holes (intake)
10. Speaker
11. Zoom ring
12. Audio output jack
13. Audio input jack
14. Audio (L/R) input jack
15. RGB (PC)/Component video 
(YPbPr/ YCbCr) signal input jack
16. HDMI input jack
17. RS-232 control port
18. USB type A/1.5A jack
19. USB mini-B jack
20. Kensington anti-theft lock slot
21. Ventilation holes (exhaust)
22. Rear adjuster foot
23. Quick-release adjuster foot
24. Ceiling mount holes
25. AC power cord inlet
26. Video input jack
27. Microphone input jack
Front/upper side
1
9
5
11
3
8
7
6
4
10
2
15181214
21
22
13
27
171619
2423
20
2526
Rear/lower side