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BenQ LH750 User Manual
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BenQ LH750 User Manual

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Digital Projector
User Manual
LH750
V 1.00

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Summary of Contents for BenQ LH750

  • Page 1 Digital Projector User Manual LH750 V 1.00...
  • Page 2 For other information, please visit www.BenQ.com. Copyright Copyright © 2024 by 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.
  • Page 3 Table of Contents Warranty and Copyright information ................2 Important safety instructions ..................4 Introduction ........................7 Shipping contents ......................7 Projector exterior view ...................... 8 Controls and functions ..................... 9 Positioning your projector .................... 12 Choosing a location ......................12 Obtaining a preferred projected image size..............13 Mounting the projector ....................
  • Page 4 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. 1.
  • Page 5 9. Do not place this product on an unstable 12. Always place the projector on a level, cart, stand, or table. The product may fall, horizontal surface during operation. sustaining serious damage. - 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.
  • Page 6 50 cm clearance from walls and free flow of air around the projector. supply's power outlet and call BenQ to - Locations where temperatures may become have the projector serviced. excessively high, such as the inside of a car with all windows rolled up.
  • Page 7 Introduction 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 Remote control with Projector Power cord batteries D igi ta l Pr oj ec Q u ic k to r...
  • Page 8 • Avoid leaving the remote control and batteries in an excessive heat or humid environment like the kitchen, bathroom, sauna, sunroom or in a closed car. • Replace only with the same or equivalent type recommended by the battery manufacturer. •...
  • Page 9 Controls and functions Projector & Remote control All the key presses described in this document are available on the remote control or projector. 2. Keystone keys ( , POWER Displays the keystone correction page. Toggles the projector between standby mode and on. Volume keys Decreases or increase the projector volume.
  • Page 10 3. OK 14. ZOOM+/ZOOM- When the On-Screen Display (OSD) menu Magnifies or reduces the projected picture is activated, confirms the selected size. On-Screen Display (OSD) menu item. 15. ID setting indicator 4. BACK 16. QUICK INSTALL Goes back to previous OSD menu, exits Quickly selects several functions to adjust and saves menu settings.
  • Page 11 Remote control effective range The remote control must be held at an angle within 30 degrees perpendicular to the projector's IR remote control sensor(s) to function correctly. The distance between the remote control and the sensor(s) should not exceed 8 meters (~ 26 feet). Make sure that there are no obstacles between the remote control and the IR sensor(s) on the projector that might obstruct the infra-red beam.
  • Page 12 Purchase the BenQ Projector Ceiling/Wall screen. Note that a special rear projection Mount Kit from your dealer to mount your screen and the BenQ Projector Ceiling/Wall projector. Mount Kit are required for this installation location.
  • Page 13 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. Projection dimensions • The screen aspect ratio is 16:9 and the projected picture is in a 16:9 aspect ratio 16:9 Screen diagonal Screen Center of lens...
  • Page 14 BenQ projector mounting 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 down due to an improper attachment through the use of the wrong gauge or length screws.
  • Page 15 Ceiling/Wall mount installation diagram Ceiling/Wall mount screw: M4 * 8L 282.9 305.9 Unit: mm Adjusting the projected image Adjusting the projection angle If the projector is not placed on a flat surface or the screen and the projector are not perpendicular to each other, the projected image becomes trapezoidal.
  • Page 16 Correcting keystone Keystoning refers to the situation where the projected image becomes a trapezoid due to angled projection. To correct this, besides adjusting the height of the projector, if you want the projector to automatically correct image keystoning, be sure the Auto Vertical Keystone function in the Advanced Menu - Installation menu is On.
  • Page 17 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. A/V device HDMI cable Wireless dongle RJ-45 cable RS-232 cable...
  • Page 18 Connecting audio The projector has built-in mono speaker(s) which are designed to provide basic audio functionality accompanying data presentations for business purposes only. They are not designed for, nor intended for stereo audio reproduction use as might be expected in home theater or home cinema applications.
  • Page 19 Performing wireless projection For different devices, follow the steps below. • For iOS/macOS devices 1. Select the WiFi network that the projector joined in the WiFi settings on your device. 2. After opening control center, press screen mirroring and choose the projector (BenQ_xxxxxxxx) to start projection.
  • Page 20 Operation Starting up the projector 1. Plug the power cord. Turn on the power outlet switch (where fitted). The power indicator on the projector lights orange after power has been applied. 2. Press on the projector or on the remote control to start the projector.
  • Page 21 Using the menus The projector is equipped with 2 types of On-Screen Display (OSD) menus for making various adjustments and settings. • Basic OSD menu: provides primary menu functions. (See Basic Menu on page • Advanced OSD menu: provides full menu functions. (See Advanced Menu on page To access the OSD menu, press MENU on the projector or remote control.
  • Page 22 Likewise, when you wish to switch from the Advanced OSD menu to the Basic OSD menu, follow the instructions below: 1. Go to System > Menu Settings > Menu Type and press OK. 2. Press to select Basic. Your projector will switch to the Basic OSD menu. Securing the projector Using a security cable lock The projector has to be installed in a safe place to prevent theft.
  • Page 23 Please write down the recall code, and contact BenQ Customer Center. 2. Write down the number and turn off your projector. 3. Seek help from the local BenQ service center to Recall Code: decode the number. You may be required to provide...
  • Page 24 Once detected, the selected source information will appear at the corner of the screen for seconds. If there is multiple equipment connected to the projector, repeat steps 1-2 to search for another signal. • The brightness level of the projected image will change accordingly when you switch between different input signals.
  • Page 25 9. Press BACK to exit the menu. Shutting down the projector 1. Press and a confirmation message will appear prompting you. If you don't respond in a few seconds, the message will disappear. 2. Press a second time. The power indicator flashes orange, the projection light source shuts down, and the fans will continue to run for approximately 2 seconds to cool down the projector.
  • Page 26 Menu operation Please note that the on-screen display (OSD) menus vary according to the signal type selected and the projector model you are using. The menu items are available when the projector detects at least one valid signal. If there is no equipment connected to the projector or no signal detected, limited menu items are accessible.
  • Page 27 Load Settings From Presentation/Vivid/Infographic/sRGB User Management Rename User Mode Brightness 0–100 Contrast 0–100 Sharpness 0–31 Gamma Selection 1.8/2.0/2.1/2.2/2.3/2.4/2.5/2.6/BenQ Color Temperature Native/Normal/Cool/Warm R Gain/G Gain/B 0–200 Color Temperature Gain Tuning R Offset/ G Offset/ 0–511 B Offset Advanced Color R/G/B/C/M/Y...
  • Page 28 Function descriptions Menu Descriptions The projector is preset with several predefined picture modes so that you can choose one to suit your operating environment and input signal picture type. • Bright: Maximizes the brightness of the projected image. This mode is suitable for environments where extra-high brightness is required.
  • Page 29 There is one user-definable mode if the current available picture modes are not suitable for your need. You can use one of the picture modes (except the User1/User2 mode) as a starting point and customize the settings. • Load Settings From 1.
  • Page 30 • 2.4/2.5: Best for viewing movies in a dark environment. • 2.6: Best for viewing movies which are mostly composed of dark scenes. • BenQ: Finely-tuned gamma to optimize details and increase contrast. High Brightness Low Brightness Low Contrast...
  • Page 31 • Color Management The Color Management provides six sets (RGBCMY) of colors to be adjusted. When you select each color, you can independently adjust its range and saturation according to your preference. To make adjustments, press the / arrows to highlight an independent color from among Red (R), Green (G), Blue (B), Cyan (C), Magenta (M), Yellow (Y) or White (W).
  • Page 32 Returns all of the adjustments you’ve made for the selected Picture Mode (including the preset mode, User1 and User2) to the factory preset values. 1. Press OK. The confirmation message is displayed. Reset Current 2. Use to select Reset and press OK. The current picture mode Picture Mode returns to the factory preset settings.
  • Page 33 2. Main menu: Audio Structure Menu Options Audio Output Internal Speaker/3.5mm Jack Mute Off/On Volume 0 – 20 Power On/Off Ring Tone Off/On Reset Audio Reset/Cancel Function descriptions Menu Descriptions Selects an audio output source from built-in speakers (Internal Speaker), Audio Output or the audio output jack (3.5mm Jack).
  • Page 34 3. Main menu: Display Structure Menu Options Aspect Ratio Auto/4:3/16:9/16:10 Auto Source Search On/Off Source Rename HDMI-1/HDMI-2 Auto/Top-Bottom/Frame 3D Mode Sequential/Frame Packing/ Side by Side/Off 3D Sync Invert Disable/Invert 3D Settings 1/3D Settings 2/ Save 3D Settings 3D Settings 3 3D Settings 1/3D Settings 2/ Apply 3D Settings 3D Settings 3/Off...
  • Page 35 Function descriptions Menu Descriptions There are several options to set the image's aspect ratio depending on your input signal source. • Auto: Scales an image proportionally to fit the projector's native resolution in its horizontal or vertical width. 15:9 picture •...
  • Page 36 When watching 3D contents: • The image may seem misplaced; however, this is not a product malfunction. • Take appropriate breaks when watching 3D contents. • Stop watching 3D contents if you feel fatigue or discomfort. • Keep a distance from the screen of about three times the effective height of the screen.
  • Page 37 • HDMI Format Selects a suitable RGB color range to correct the color accuracy. • Auto: Automatically selects a suitable color range for the incoming HDMI signal. • Limited: Utilizes the Limited range RGB 16-235. • Full: Utilizes the Full range RGB 0-255. HDMI Settings •...
  • Page 38 4. Main menu: Installation Structure Menu Options Projector Position Front/Front Ceiling/Rear/Rear Ceiling H: -40 – +40 2D Keystone V: -40 – +40 Auto Vertical Keystone Off/On Test Pattern On/Off High Altitude Mode On/Off 9600/14400/19200/38400/57600/ Baud Rate 115200 Projector ID Setting Off/01/02/.../99 Corner Fit 0~60...
  • Page 39 We recommend you use the High Altitude Mode when your environment is between 1500 m–3000 m above sea level, and ambient temperature is between 0°C–30°C. Operation under "High Altitude Mode" may cause a higher decibel operating noise level because of increased fan speed necessary to improve overall system cooling and performance.
  • Page 40 • Digital Zoom Magnifies or reduces the projected image size. 1. After the adjustment bar displays, press on the projector or ZOOM+/ZOOM- on the remote control repeatedly to reduce or magnify the image to a desired size. 2. Press OK to enter panning mode. 3.
  • Page 41 • Save Image Memory: Allows you to save and apply several sets of image settings for regularly used circumstances, including the following settings: Projector Position, Aspect Ratio, Picture Mode, Source, Resolution, Light Source Mode, Digital Shrink & Shift, Blanking. You can choose one set of memory to save the current settings.
  • Page 42 5. Main menu: System Structure Menu Options Language Bhs Ind Background Color Black/Blue/Purple Background Settings Splash Screen BenQ/Black/Blue Menu Type Basic/Advanced Menu Display Time 5 sec/10 sec/20 sec/30 sec/Always Menu Settings Center/Top-Left/Top-Right/ Menu Position Bottom-Right/Bottom-Left Reminder Message Off/On Light Source Usage Time...
  • Page 43 Status Connect/Disconnect DHCP Off/On IP Address Wired LAN Subnet Mask Network Settings Default Gateway DNS Server Apply AMX Device Discovery Off/On MAC Address (Wired) Factory Default Reset/Cancel Reset System Reset/Cancel Function descriptions Menu Descriptions Language Sets the language for the On-Screen Display (OSD) menus. •...
  • Page 44 • Eco When activated, the projector maintains at normal standby mode with less than 0.5W power consumption. Changing this setting will make power consumption higher. • Network Standby Mode When activated, the projector maintains at network standby mode with less than 2W power consumption.
  • Page 45 • Panel Key Lock With the control keys on the projector locked, you can prevent your projector settings from being changed accidentally (by children, for example). When the Panel Key Lock is on, no control keys on the projector will operate except POWER.
  • Page 46 6. Main menu: Information Structure Menu Options Native Resolution Detected Resolution Source Picture Mode Light Source Mode 3D Format Color System Dynamic Range Light Source Usage Time Projector ID Firmware Version Service Code Function descriptions Menu Descriptions Native Shows the native resolution of the projector. Resolution Detected Shows the native resolution of the input signal.
  • Page 47 Maintenance Care of the projector Cleaning the lens Clean the lens whenever you notice dirt or dust on the surface. Please be sure to turn off the projector and let it cool down completely before cleaning the lens. • Use a canister of compressed air to remove dust. •...
  • Page 48 Time used in ECO mode = y hours Time used in SmartEco mode = z hours Time used in Custom mode = a hours α 2. Equivalent Light Hour = hours α --- - × χ --- - × --- - ×...
  • Page 49 To set Auto Power Off, go to Advanced Menu - System > Operation Settings > Power On/Off Settings > Auto Power Off and press Changing this setting will make power consumption higher. Maintenance...
  • Page 50 Indicators Light Status & Description Power events Stand-by mode Powering up Normal operation Normal power-down cooling Download Burn-in events Burn-in on Burn-in off Light events Light source life exhausted Light source error in normal operation Thermal events Fan 1 error (the actual fan speed is outside the desired speed) Fan 2 error (the actual fan speed is outside the desired speed) Fan 3 error (the actual fan speed is outside the desired speed) Temperature 1 error (over limited temperature)
  • Page 51 Troubleshooting The projector does not turn on. Cause Remedy Plug the power cord into the AC power jack on the projector, and plug the power cord into the power There is no power from the power cord. outlet. If the power outlet has a switch, make sure that it is switched on.
  • Page 52 Please visit below website and choose your country to Audio signal output find your service contact window. PC audio jack x 1 http://www.benq.com/welcome Control Type-A power supply 5V /1.5 A x 1 Type-A power supply 5V /1 A x 1 for optional...
  • Page 53 Dimensions 420.7 mm (W) x 286.1 mm (D) x 131.7 (H) 420.7 286.1 131.7 Unit: mm Specifications...
  • Page 54 XGA_85 84.997 68.667 94.500 XGA_120 (Reduce 119.989 97.551 115.5 Supported Blanking) 1152 x 864 1152 x 864_75 67.5 BenQ Notebook 1024 x 576 60.00 35.820 46.996 Timing BenQ Notebook 1024 x 600 64.995 41.467 51.419 Timing 1280 x 720 1280 x 720_60 45.000...
  • Page 55 The timings showing above may not be supported due to EDID file and VGA graphics card limitations. It is possible that some timings cannot be chosen. • Video timings Supported 3D format Vertical Horizontal Pixel Timing Resolution Frequency Frequency Frequency Frame Frame Side by...
  • Page 56 4:4:4 Supported Supported Supported 1080P/24P (24 Hz) 4:2:2 Supported Supported Supported 4:2:0 56 Specifications...