BenQ LU9750 User manual

Digital Projector
User Manual
LU9750/LU9800
V1.00

English
2
Copyright and disclaimer
Copyright
Copyright 2021 BenQ Corporation. All rights reserved. No part of this publication may be
reproduced, transmitted, transcribed, stored in a retrieval system or translated into any language
or computer language, in any form or by any means, electronic, mechanical, magnetic, optical,
chemical, manual or otherwise, without the prior written permission of BenQ Corporation.
All other logos, products, or company names mentioned in this manual may be the registered
trademarks or copyrights of their respective companies, and are used for informational purposes
only.
Disclaimer
BenQ Corporation makes no representations or warranties, either expressed or implied, with
respect to the contents hereof and specically disclaims any warranties, merchantability or tness
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 BenQ
Corporation to notify any person of such revision or changes.
This user manual aims to provide the most updated and accurate information to customers, and
thus all contents may be modied from time to time without prior notice. Please visit http://www.
benq.com for the latest version of this manual.
Statement regarding hyperlinks and third-party websites
BenQ is not responsible for the content of the websites or of similar resources, which are
maintained and controlled by third parties, that may be linked from this product. Providing links
to those websites or to similar resources does not mean that BenQ makes any warranty or
representation to their content by expression or by implication.
Any third party content or service preinstalled in this product is provided "as is". BenQ does not,
by expression or by implication, make any warrant to the content or to the services provided by
third parties. BenQ does not warrant or guarantee that the content or services provided by third
parties are accurate, effective, most up-to-date, legal, or complete. Under no circumstances shall
BenQ be liable for the content or services provided by third parties including their negligence.
Services provided by third parties may be terminated temporarily or permanently. BenQ does
not warrant or guarantee that the any content or services provided by third parties are in good
condition at any time, and is not liable for the termination of the said content and services. In
addition, BenQ is not involved in any transactions you conduct in the websites or similar resources
maintained by third parties.
You should contact the content or service providers for any questions, concerns, or disputes.
2021/10/29

Table of Contents
Copyright and disclaimer.............................................................. 2
Copyright................................................................................................................................................. 2
Disclaimer................................................................................................................................................ 2
Statement regarding hyperlinks and third-party websites ........................................................... 2
Important safety instructions....................................................... 6
General safety instruction ............................................................................................ 6
Notice on laser............................................................................................................... 7
Laser class................................................................................................................................................ 7
Laser parameters ................................................................................................................................... 7
Risk Group 3 Information ............................................................................................. 8
Light hazard warning ............................................................................................................................. 8
Label instruction .................................................................................................................................... 8
Laser light instruction ........................................................................................................................... 10
Prepare for installation ................................................................................................. 11
Caution for installation......................................................................................................................... 11
Cooling notice ........................................................................................................................................ 12
Package contents ........................................................................... 14
Standard packing items ................................................................................................ 14
Lens information............................................................................................................ 14
Introduction.................................................................................... 15
Projector exterior view................................................................................................. 15
Front and upper side view ................................................................................................................... 15
Rear and upper side view..................................................................................................................... 15
Controls and functions.................................................................................................. 16
Control panel.......................................................................................................................................... 16
Control terminal .................................................................................................................................... 17
Remote control ...................................................................................................................................... 18
Installation ...................................................................................... 21
Installing removing the optional lens .......................................................................... 21
Installing the new lens........................................................................................................................... 21
Removing the existing lens from the projector.............................................................................. 22
Evaluate for distance by image size............................................................................. 23
Obtaining a preferred projected image size .................................................................................... 23
Projection dimensions........................................................................................................................... 23
Lens dimension....................................................................................................................................... 26
Adjusting by Lens shift .................................................................................................. 28
Adjusting the vertical image position ................................................................................................ 28
Adjusting the horizontal image position........................................................................................... 28
Lens shift range diagram .............................................................................................. 28

Connection ..................................................................................................................... 29
Before connecting.................................................................................................................................. 29
Connecting with AV equipment ......................................................................................................... 31
Connecting with computer ................................................................................................................. 31
Connecting with HDBaseT transmitter ........................................................................................... 32
Connecting with LAN........................................................................................................................... 32
Operations...................................................................................... 33
Switch on/off the projector........................................................................................... 33
Connecting the power cord................................................................................................................ 33
Power indicator...................................................................................................................................... 33
Switch on the projector....................................................................................................................... 34
Switch off the projector....................................................................................................................... 40
Using the menu .............................................................................. 41
Main menu...................................................................................................................... 41
Display menu.................................................................................................................. 42
Corner Fit menu .................................................................................................................................... 44
Digital Image Resizing............................................................................................................................ 44
Blanking menu......................................................................................................................................... 45
Native Resolution .................................................................................................................................. 45
3D menu .................................................................................................................................................. 46
Fast Mode ................................................................................................................................................ 46
Picture menu.................................................................................................................. 47
Color Temperature Fine Tuning menu ............................................................................................. 49
3D Color Management menu ............................................................................................................. 50
Source menu .................................................................................................................. 51
System Setup : Basic menu .......................................................................................... 53
Menu Settings menu.............................................................................................................................. 54
Operation Settings menu..................................................................................................................... 54
Lens Settings menu................................................................................................................................ 55
System Setup : Advanced menu .................................................................................. 57
Audio Settings menu............................................................................................................................. 59
Light Settings menu ............................................................................................................................... 60
Security Settings menu ......................................................................................................................... 60
Standby Settings menu.......................................................................................................................... 61
Network Settings menu....................................................................................................................... 61
Information menu.......................................................................................................... 62
Menu structure .............................................................................................................. 63
Maintenance ................................................................................... 68
Before maintaining the projector ................................................................................ 68
Care of the projector ........................................................................................................................... 68
Clean the lens front surface ......................................................................................... 68
Clean the projector case............................................................................................... 68
LED indicator ................................................................................................................. 69
System message...................................................................................................................................... 69

Troubleshooting ............................................................................. 71
Troubleshooting............................................................................................................. 71
The projector does not turn on......................................................................................................... 71
No picture. .............................................................................................................................................. 71
Blurred image.......................................................................................................................................... 71
Remote control does not work. ........................................................................................................ 71
The password is incorrect................................................................................................................... 71
Specications.................................................................................. 72
Specications ................................................................................................................. 72
Specications ................................................................................................................. 73
Dimensions ..................................................................................................................... 74
Appendix......................................................................................... 75
Timing table ................................................................................................................... 75
HDMI Input (Support Video Timings)............................................................................................... 75
HDMI Input (Support PC Timings).................................................................................................... 75
PC Input(Support PC Timings) ........................................................................................................... 76
True 3D Video Compatibility table ................................................................................................... 78
RS232 command control .............................................................................................. 79
PJLink .............................................................................................................................. 87
PJLink protocal ....................................................................................................................................... 87
Control commands................................................................................................................................ 87

English
6
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.
General safety instruction
1. Do not look straight at the projector lens during operation. The intense light beam may
damage your eyes.
2. Always open the lens shutter or remove the lens cap when the projector light source is on.
3. 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 uctuate or cut out, it is recommended
that you connect your projector through a power stabilizer, surge protector or uninterruptible
power supply (UPS).
4. 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 re. To
temporarily turn off the light source, press BLANK on the remote control.
5. Do not place this product on an unstable cart, stand, or table. The product may fall, sustaining
serious damage.
6. 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 qualied professional service personnel.
7. Do not place this projector in any of the following environments.
• Space that is poorly ventilated or conned. Allow at least 50 cm clearance from walls and
free ow 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 re alarms
• Locations with an ambient temperature above 40°C / 104°F
• Locations where the altitudes are higher than 3000 m (10000 feet).
8. 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 inammables near the projector.
If the ventilation holes are seriously obstructed, overheating inside the projector may result in
a re.

English
7
9. 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.
10. 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 supply's wall socket and
call BenQ to have the projector serviced.
Do not remove
This equipment has a three-pin grounding-type power plug. Do not
remove the grounding pin. As a safety feature, this plug will only t a
grounding-type power outlet. If you are unable to t the plug into the
outlet, contact an electrician.
Notice on laser
This symbol indicates that there is a potential hazard of eye exposure to
laser radiation unless the instructions are closely followed.
Laser class
(for USA) This Laser Product is designated as Class 3R during all procedures of
operation and complies with IEC/EN 60825-1:2007.
(for WW) This Laser Product is designated as Class 1 during all procedures of
operation and complies with IEC/EN 60825-1:2014.
LASER LIGHT - AVOID DIRECT EYE EXPOSURE.
Do not point laser or allow laser light to be directed or reected toward other
people or reective objects.
Direct or scattered light can be hazardous to eyes and skin.
There is a potential hazard of eye exposure to laser radiation if the included
instructions are not followed.
Caution – use of controls or adjustments or performance of procedures other than
those specied herein may result in hazardous radiation exposure.
Laser parameters
Wavelength 449nm - 461nm (Blue)
Mode of operation Pulsed, due to frame rate
Pulse width 1.34ms
Pulse repetition rate 120Hz
Maximum laser energy 0.698mJ
Total internal power >100w
Apparent source size >10mm, at lens stop
Divergence >100 mili Radian

English
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Risk Group 3 Information
Light hazard warning
Failure to comply with the following may result in serious injury:
• No direct exposure to the beam is permitted, RG3 IEC 62471-5:2015.
• Operators control access to the beam within the hazard distance or install the projector at
sufcient height to prevent exposures of spectators’ eyes within the hazard distance.
The hazard distance is the distance measured from the projection lens at which the intensity or
energy per unit of surface is lower than the applicable exposure limit on the cornea or skin. If the
person is within the hazard distance, the beam is considered unsafe for exposure.
The hazard distance for this projector is 0-150 cm.
Note
This projector is an RG3 product, which must be installed in a safe place and must be handled by qualified and
professionally skill trained personnel
For the installation and removal of the lens, please consult your dealer with qualied profession-als to install it. Do not
try to install the projector yourself, otherwise your eyesight may be dam-aged
In case to install the projector over head, keep over 3m distance at least between the oor surface and the RG3 area.
Operators shall control access to the beam within the hazard distance or install the product at the height that will
prevent exposures of spectators’ eyes within the hazard distance.
Caution:
Use of controls, adjustments or performance of procedures other than those specied herein may result in hazardous
laser light exposure.

English
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Label instruction
Below drawing show the label’s location.
1. Laser warning label
2. Spec label

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Laser light instruction
Below drawing is the laser aperture location. Be careful not to let the eye see the light directly.
Laser aperture
Interlock switches
This machine has 2 (Top cover x 1, Lens x 1) Interlock switches to protect the laser light Leakage.
1. Will power-off the system individually when the top cover is removed.
2. Will power-off the system individually when the lens is removed or not install correctly.
Interlock
switches
Interlock
switches