BenQ Projector TH670 User Manual

							Introduction 11
Controls and functions
Projector
8. OK/MODE
Activates the selected On-Screen 
Display (OSD) menu item. See Using 
the menus on page 28 for details.
Selects an available picture setup 
mode. See Selecting a picture mode 
on page 36 for details.
9.MENU
Turns on or off the On-Screen Display 
(OSD) menu.
10. Volume/Arrow keys ( /  Left, 
/ Right)
Adjusts the sound level.
When the On-Screen Display (OSD) 
menu is activated, the #7, and #10 keys 
are used as directional arrows to select 
the desired menu items and to make 
adjusents. See Using the menus on 
page 28 for details.
11. AUTO
Automatically determines the best 
picture timings for the displayed image. 
See Auto-adjusting the image on page 
26 for details.
12. LAMP indicator light
Indicates the status of the lamp. Lights 
up or flashes when the lamp has 
developed a problem. See Indicators 
on page 67 for details. 1. Focus ring
Adjusts the focus of the projected 
image.
2. Zoom ring
Adjusts the size of the image.
3. TEMPerature indicator light
Lights up red if the projectors 
temperature becomes too high. See 
Indicators on page 67 for details.
4. SOURCE
Displays the source selection bar. See 
Switching input signal on page 33 for 
details.
5. POWER/POWER indicator light
Toggles the projector between standby 
mode and on. See Starting up the 
projector on page 24 for details.
Lights up or flashes when the projector 
is under operation. See Indicators on 
page 67 for detail.
6. BACK
Goes back to previous OSD menu, and 
closes projector OSD menu when its 
on the top level.
7. Keystone/Arrow keys ( / Up, 
/Down)
Displays Keystone page and adjusts the 
vertical keystone values. See Correcting 
keystone on page 26 for details.
21
5
12
8
34
6
7
10
9
11
II 
						

							Introduction 12
Mounting the projector
We want you to have a pleasant experience using your BenQ projector, so we 
need to bring this safety matter to your attention to prevent possible damage to 
person and property.
If you intend to mount your projector on the ceiling or wall, we strongly 
recommend that you use a proper fitting BenQ projector ceiling mount kit or 
wall mount kit and that you ensure it is securely and safely installed.
If you use a non-BenQ brand projector mounting kit, there is a safety risk that 
the projector may fall from the ceiling or wall due to an improper attachment 
through the use of the wrong gauge or length screws.
You can purchase a BenQ projector ceiling mount or wall mount kit from the 
place you purchased your BenQ projector. BenQ recommends that you also 
purchase a separate Kensington lock compatible security cable and attach it 
securely to both the Kensington lock slot on the projector and the base of the 
mounting bracket. This will perform the secondary role of restraining the 
projector should its attachment to the mounting bracket become loose. 
						

							Introduction 13
Remote control
1. ON
Turns on the projector.
2. OFF
Turns off the projector.
3. 3D
Activates the 3D On-Screen Display 
(OSD) menu item.
4. PIP/SWAP
Not operational on this projector.
5. INVERT
Inverts right/left eye picture when 3D 
mode is activated.
6. Arrow keys ( Up,  Down,   
Left,  Right)
When the On-Screen Display (OSD) 
menu is activated, the keys are used as 
directional arrows to select the desired 
menu items and to make adjusents.7. OK
Activates the selected On-Screen 
Display (OSD) menu item. 
8. MENU
Turns on or off the On-Screen Display 
(OSD) menu. 
9. BACK
Goes back to previous OSD menu, 
and closes projector OSD menu when 
its on the top level.
10. Mute ( )
Toggles projector audio between on 
and off.
11. Play buttons (  Previous,   
Rewind,    Play/Pause,   Stop, 
 Next,   Fast forward)  )
Not operational on this projector.
12. KEYSTONE
Displays Keystone page.
13. CONTRAST
Displays the contrast setting bar.
14. GAMMA
Selects a gamma value.
15. LIGHT
Enables backlight functions of the 
remote control’s buttons.
16. AUTO
Automatically determines the best 
picture timings for the displayed 
image.
17. ECO BLANK
Press the ECO BLANK button to 
turn off the image for a period of time 
with 70% lamp power saving. Press 
again to restore the image.
10
1
3
6
7
8
11
12
13
15
1617
18
19
2
45
9
14
202122232425 
						

							Introduction 14Infra-Red (IR) remote control sensor is located on the front of the projector. The 
remote control must be held at an angle within 30 degrees perpendicular to the 
projectors IR remote control sensor to function correctly. The distance straight line 
between the remote control and the sensor should not exceed 8 meters (~ 26 feet).
Make sure that there are no obstacles between the remote control and the IR sensor 
on the projector that might obstruct the infra-red beam. 18. SOURCE
Displays the source selection bar. 
19. Volume ( / )
Adjusts the sound level.
20. BRIGHT
Displays the brightness setting bar.
21. MODE
Selects an available picture setup mode.
22. FINE TUNE
Displays Color Temperature Fine 
Tuning setting bar.23. COLOR TEMP
Displays the color temperature setting 
bar.
24. SHARP
Displays the sharpness setting bar.
25. COLOR MANAGE
Displays the color management setting 
bar.
• Operating the projector from the 
front
Ap
pro
x
. 30
° 
						

							Introduction 15
Replacing the remote control battery
1. To open the battery cover, turn the remote control over to view its back, push 
on the finger grip on the cover and slide it up in the direction of the arrow as 
illustrated. The cover will slide off.
2. Remove any existing batteries (if necessary) and install two AAA batteries 
observing the battery polarities as indicated in the base of the battery 
comparent. Positive (+) goes to positive and negative (-) goes to negative.
3. Refit the cover by aligning it with the base and sliding it back down into position. 
Stop when it clicks into place.
• Avoid excessive heat and humidity. 
• There may be battery damage if the battery is incorrectly replaced. 
• Replace only with the same or equivalent type recommended by the battery 
manufacturer.
• Dispose of the used battery according to the battery manufacturer’s 
instructions.
• Never throw a battery into a fire. There may be danger of an explosion. 
• 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. 
						

							Positioning your projector 16
Positioning your projector
Choosing a location
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.
Your projector is designed to be installed in one of four possible installation locations:
*There are two menu types for your selection. One is Basic, and the other is 
Advanced. From the Basic menu, you can select Projector Position when the 
projector is without input signal. From the Advanced menu, you can select 
Projector Position in the System Setup: Basic menu. See Using the menus on page 
28 for details.
1. Front Table
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.
2. Front Ceiling
Select this location with the projector suspended 
upside-down 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 Front Ceiling in the Projector Position* menu 
after you turn the projector on.
3. Rear Table
Select this location with the projector placed near the 
floor behind the screen.
Note that a special rear projection screen is required.
Set Rear Table in the Projector Position* menu 
after you turn the projector on.
4. Rear Ceiling
Select this location with the projector suspended 
upside-down 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 Rear Ceiling in the Projector Position* menu 
after you turn the projector on. 
						

							Positioning your projector 17
Obtaining a preferred projected image size
The distance from the projector lens to the screen, the zoom setting (if available), and 
the video format each factors in the projected image size.
The projector should always be placed horizontally level (like flat on a table), and 
positioned directly perpendicular (90° right-angle square) to the horizontal center of 
the screen. This prevents image distortion caused by angled projections (or projecting 
onto angled surfaces). 
If the projector is mounted on a ceiling, it must be mounted upside-down so that it 
projects at a slightly downward angle.
You can see from the diagram on page 18, that this type of projection causes the 
bottom edge of the projected image to be vertically offset from the horizontal plane 
of the projector. When ceiling mounted, this refers to the top edge of the projected 
image.
If the projector is positioned further away from the screen, the projected image size 
increases, and the vertical offset also increases proportionately.
When determining the position of the screen and projector, you will need to account 
for both the projected image size and the vertical offset dimension, which are 
proportional to the projection distance.
BenQ has provided a table of screen sizes to assist you in determining the ideal 
location for your projector. There are two dimensions to consider, the perpendicular 
horizontal distance from the center of the screen (projection distance), and the 
vertical offset height of the projector from the horizontal edge of the screen (offset). 
						

							Positioning your projector 18
Projection dimensions
Refer to Dimensions on page 71 for the center of lens dimensions of this projector 
before calculating the appropriate position.
For example, If you are using a 60-inch screen, the projection distance is 2194 mm and 
with a vertical offset of 120 mm.
If your measured projection distance is 5.5 m (5500 mm), the closest match in the 
Distance from screen (mm) column is 5485 mm. Looking across this row shows that a 
150 (about 3810 mm) screen is required.
All measurements are approximate and may vary from the actual sizes. BenQ 
recommends that if you intend to permanently install the projector, you should 
physically test the projection size and distance using the actual projector in situ 
before you permanently install it, so as to make allowance for this projectors 
optical characteristics. This will help you determine the exact mounting position so 
that it best suits your installation location.
Screen sizeDistance from screen (mm)Vertical offset 
(mm)DiagonalW
(mm)H
(mm) Min lengthAverageMax length
Inchmm(max. zoom) (min. zoom)
30 762 664 374 994 1097 1200 60
40 1016 886 498 1325 1463 1600 80
60 1524 1328 747 1988 2194 2400 120
80 2032 1771 996 2651 2926 3200 159
100 2540 2214 1245 3313 3657 4000 199
120 3048 2657 1494 3976 4388 4800 239
150 3810 3321 1868 4970 5485 6000 299
200 5080 4428 2491 6627 7314 8000 399
250 6350 5535 3113 8283 9142 10000 498
300 7620 6642 3736 9940 10970 12000 598
16:9 Screen diagonal
Projection distanceCenter of lens Screen
Ve r t i c a l  o f f s e t H
W 
						

							Connection 19
Connection
When connecting a signal source to the projector, be sure to:
1. Turn all equipment off before making any connections.
2. Use the correct signal cables for each source.
3. Ensure the cables are firmly inserted. 
• In the connections shown below, some cables may not be included with the 
projector (see Shipping contents on page 8). They are commercially available 
from electronics stores.
• For detailed connection methods, see pages 20-23.
1
2
USB
HDMI
6
17
HDMI
USB
HDMI
HDMI
1345
389 
						

							Connection 20
Connecting a computer
The projector can connect to both IBM® compatibles and Macintosh® computers. A 
Mac adapter is needed if you are connecting legacy version Macintosh computers.
To connect the projector to a notebook or desktop computer 
(using VGA):
1. Take the supplied VGA cable and connect one end to the D-Sub output socket 
of the computer.
2. Connect the other end of the VGA cable to the PC-1 or PC-2 signal input jack 
on the projector.
3. If you wish to make use of the projector speaker(s) in your presentations, take a 
suitable audio cable and connect one end of the cable to the audio output jack of 
the computer, and the other end to the AUDIO IN jack of the projector. 
When you connect audio output signal from a computer, please balance out the 
volume control bar to obtain an optimal sound effects.
4. If you wish, you can use another suitable audio cable and connect one end of the 
cable to the AUDIO OUT jack of the projector, and the other end to your 
external speakers (not supplied).
Once connected, the audio can be controlled by the projector On-Screen 
Display (OSD) menus. See Audio Setup on page 48 for details.
The built-in speaker will be muted when the AUDIO OUT jack is connected.
To connect the projector to a notebook or desktop computer 
(using HDMI):
1. Take a HDMI cable and connect one end to the HDMI jack of the computer.
2. Connect the other end of the cable to the HDMI jack on the projector.
Many notebooks 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 notebook. Press FN and the labeled function key 
simultaneously. Refer to your notebooks documentation to find your notebooks 
key combination.
1. Audio cable 6. USB port for power charging
2. Microphone 3.5 mini jack cable 7. Component Video to VGA (DSub) 
adapter cable
3. HDMI cable 8. Video cable
4. VGA cable 9. Audio L/R cable
5. USB cable (mini-B to type A)