BenQ Projector HT4050 User Manual

							HT4050
Digital Projector 
Home Cinema Series 
User Manual 
						

							2
Ta b l e  o f  c o n t e n t s
Important safety 
instructions ................... 3
Projector features ........ 7
Shipping contents ...................................... 8
Projector exterior view........................... 9
Controls and functions ..........................11
Positioning your 
projector ..................... 16
Choosing a location ................................16
Obtaining a preferred projected 
image size ..................................................17
Shifting the projection lens ...................19
Connection ................. 20
HDMI connection ...................................21
Smart devices connection .....................22
Component Video connection ............24
Video connection ....................................25
PC connection .........................................26
Connecting video source devices........27
Playing sound through the 
projector ...................................................28
Operation ................... 29
Starting up the projector ......................29
Adjusting the projected image .............31
Menu Functions .......... 33
About the OSD Menus ..........................33
Using the Basic OSD menu...................35
Using the Advanced OSD menu..........39
Securing the projector ...........................40
Utilizing the password function ...........40
Switching input signal .............................43Picture menu  .......................................... 44
Audio Setup menu  ................................ 50
Display menu  .......................................... 51
System Setup : Basic menu  .................. 53
System Setup : Advanced menu  ......... 54
Information menu .................................. 56
Shutting down the projector ............... 57
Advanced OSD menu structure ......... 58
Maintenance ............... 62
Care of the projector ............................ 62
Lamp information ................................... 63
Troubleshooting ........ 69
Specifications .............. 70
Projector specifications ......................... 70
Dimensions .............................................. 71
Timing chart ............................................. 72
Warranty and 
Copyright 
information ................. 78 
						

							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. To 
temporarily turn off the lamp, press 
BLANK on the projector or remote 
control. 
						

							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. The only 
user serviceable part is the lamp 
which has its own removable cover.
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. 
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.
3000 m
(10000 feet)
0 m
(0 feet) 
						

							Important safety instructions 6
Safety Instructions (Continued)
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. 
Ceiling 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, we strongly recommend 
that you use a proper fitting BenQ 
projector ceiling mount kit and that 
you ensure it is securely and safely 
installed.
If you use a non-BenQ brand 
projector ceiling mount kit, there is a 
safety risk that the projector may fall 
from the ceiling due to an improper 
attachment through the use of the 
wrong gauge or length screws.
You can purchase a BenQ projector 
ceiling 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 ceiling mount bracket. This will 
perform the secondary role of 
restraining the projector should its 
attachment to the mounting bracket 
become loose.
Hg - Lamp contains mercury. Manage 
in accordance with local disposal 
laws. See www.lamprecycle.org. 
						

							Projector features 7
Projector features
•Full HD compatible
The projector is compatible with Standard Definition TV (SDTV) 480i, 576i, Enhanced 
Definition television (EDTV) 480p, 576p and High Definition TV (HDTV) 720p, 1080i/p 
60Hz formats, with the 1080p format providing a true 1:1 image reproduction.
•High picture quality
The projector provides excellent picture quality due to its high resolution, excellent 
home theater brightness, high contrast ratio, vivid color and rich gray-scale 
reproduction.
•Cinematic color reproduction
The projector features a precision-tuned RGBRGB color wheel to produce realistic 
color accuracy depth and range of HDTV standard, ensures that movies are seen with 
lifelike colors exactly the way the director intended.
•Rich gray-scale
When viewed in a darkened environment, the automatic gamma control provides 
excellent gray-scale display which reveals details in shadows and in night or darkened 
scenes.
•Intuitive H/V lens shift
The intuitive control over lens shift lever provides flexibility in setting-up your 
projector.
•2D Keystone (Side Projection)
The projector offers horizontal (side to side) keystone correction, enabling a wider 
projector installation area. When the projector is placed off center, the 2D keystone 
correction feature gives you a wider projector installation flexibility by correcting the 
trapezoid effect using horizontal and vertical adjustments.
•User-friendly OSD
Two types of OSD menus are designed for different usage customs: the Basic OSD is 
intuitive and consumerlike, while the Advanced OSD offers traditional usability.
•Wide variety of inputs and video formats
The projector supports a wide variety of inputs for connection to your video and PC 
equipment, including component video, and composite video, as well as dual HDMI, 
PC, and an output trigger for connection to automated screen and environment 
lighting systems.
•ISF certified calibration control
To reach a higher standard of performance, the projector incorporates ISF NIGHT and 
ISF DAY mode settings in its OSD menus, which requires professional calibration 
service from authorized ISF installers.
•3D function
To enjoy the 3D movies, videos, and sporting events in a more realistic way by 
presenting the depth of the images through HDMI.
•Audio Enhancer with built-in chamber speaker
BenQ’s newest powerful digital sound enhancement engine incorporates WaveAudio’s 
breakthrough algorithms, along with 4 sound modes and additional EQ setting, bringing 
dramatic audiovisual enjoyment like no other.
•SmartEco
SmartEco™ technology saves lamp power consumption up to 70% depending on the 
content brightness level when SmartEco mode is selected. 
						

							Projector features
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.
Other accessories
For below accessories, please consult yo ur dealer for detailed information.  HT4050
Batteries
Warranty cardUser manual CDQuick start guidePower cable
Remote Control
Projector
Spare lamp kit Ceiling mount kit 3D Glasses Carry bag Wireless FHD Kit 
(WDP01) 
						

							Projector features 9
Projector exterior view
1. External control panel 
(See Projector on page 11 for 
details.)
2. Lamp compartment cover
3. Vent (cooling vent)
4. Quick-release button
5. Lens cap & string
6. Projection lens
7. Zoom slide lever
8. Front IR remote sensor
9. Focus ring
10. Lens Shift
11. Top IR remote sensor
12. 3D SYNC OUT
13. HDMI 1 input jack
14. HDMI 2 / MHL dual mode port 
Also can be charging connected MHL 
compatible smart device as long as the 
projector is powered on.
15. USB Mini B input jack 
Used for service.
16. PC input jack
17. RS-232 control port 
Used to interface with a PC or home 
theater control/automation system.
18. COMPONENT input jacks
19. USB Type A 1.5A 
Used for charging the receiver box of 
the Wireless FHD Kit (WDP01) 
(optional accessory)
20. Audio speaker
21. Kensington anti-theft lock slot
22. VIDEO input jack
23. AUDIO input jack (R)
24. AUDIO input jack (L)
25. AUDIO input jack
26. AUDIO output jack
27. Quick-release foot
28. 12 V TRIGGER out jack
Used to trigger external device such 
as an electric screen or light control, 
etc. Consult your dealer for how to 
connect these devices.
29. AC power cord inlet
9
26
4
Front/upper side
8
7
1
3
5
1110
Rear/lower side
21232425262729222820
1415161718131912 
						

							Projector features 1030. Ceiling mount holes
31. Front adjuster foot
32. Rear adjuster foot
Bottom side
31
32
3030
3032