Optoma N3751K User manual

User manual
Flat Panel

English
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TABLE OF CONTENTS
SAFETY............................................................................................... 5
Safety Instructions..................................................................................................................... 5
Copyright ................................................................................................................................... 6
Disclaimer.................................................................................................................................. 6
Trademark Recognition ............................................................................................................. 6
FCC Statement.......................................................................................................................... 6
FCC Warning............................................................................................................................. 6
Declaration of Conformity for EU Countries .............................................................................. 7
WEEE........................................................................................................................................ 7
ENERGY STAR ......................................................................................................................... 7
Low Blue Light and Eye Health ................................................................................................. 7
What is Low Blue Light Technology?.................................................................................... 7
Calculating Breaks ............................................................................................................... 7
Looking at Distant Objects ................................................................................................... 7
How to Exercise Your Eyes? ................................................................................................ 7
INTRODUCTION ................................................................................ 8
Package Contents ..................................................................................................................... 8
Standard Accessories........................................................................................................... 8
Optional Accessories............................................................................................................ 9
Product Overview ..................................................................................................................... 10
Front View ........................................................................................................................... 10
Rear View............................................................................................................................ 11
Remote Control ........................................................................................................................ 13
SETUP AND INSTALLATION........................................................... 15
Wall Mounting........................................................................................................................... 15
Wall Mount Specications ................................................................................................... 16
Stand Mounting (Optional)........................................................................................................ 19
Using the Remote Control ........................................................................................................ 22
Installing/Replacing the Remote Control Batteries.............................................................. 22
Remote Control Operating Range....................................................................................... 23
Connections.............................................................................................................................. 24
Connecting to Power ........................................................................................................... 24
Connecting External Devices .............................................................................................. 24

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USING THE DISPLAY....................................................................... 30
Powering On/O󰀨 ....................................................................................................................... 30
Setup Wizard............................................................................................................................ 31
BASIC OPERATIONS....................................................................... 33
Home Screen Overview............................................................................................................ 33
Viewing Recent Tasks .............................................................................................................. 34
OSD Menu................................................................................................................................ 35
Shortcut Menu ..................................................................................................................... 36
Conguring Image Settings ................................................................................................. 40
Conguring Display Settings ............................................................................................... 41
Conguring Audio Settings.................................................................................................. 42
Viewing Device Information................................................................................................. 43
Android Settings Menu ............................................................................................................. 44
Personalizing the System.................................................................................................... 45
Conguring Network Settings.............................................................................................. 48
Conguring Device Settings ................................................................................................ 50
Conguring Security Settings .............................................................................................. 54
Conguring System Settings ............................................................................................... 58
USING THE APPS............................................................................. 63
Creative Cast............................................................................................................................ 64
Supported Operating Systems for Casting.......................................................................... 64
Proprietary Sharing ............................................................................................................. 64
Mobile Device...................................................................................................................... 65
Computer............................................................................................................................. 67
Creative Cast Settings......................................................................................................... 71
Creative Board.......................................................................................................................... 72
File Manager............................................................................................................................. 78
Managing Files .................................................................................................................... 78
Cloud Storage ..................................................................................................................... 80
Playing Multimedia Files...................................................................................................... 83
Screen Lock.............................................................................................................................. 87
Browser .................................................................................................................................... 87
Optoma Marketplace ................................................................................................................ 88
Keeper...................................................................................................................................... 89
MediaPlayer.............................................................................................................................. 90
Creating a Playlist ............................................................................................................... 90
Managing a Playlist ............................................................................................................. 92
Quick Access....................................................................................................................... 97
WPS O󰀩ce ............................................................................................................................... 98
Optoma Management Suite (OMS).......................................................................................... 99

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ADDITIONAL INFORMATION......................................................... 102
Dimensions.............................................................................................................................. 102
55-inch................................................................................................................................ 102
65-inch................................................................................................................................ 103
75-inch................................................................................................................................ 104
86-inch................................................................................................................................ 105
98-inch................................................................................................................................ 106
Supported Timing List.............................................................................................................. 107
RS232 Protocol Function List.................................................................................................. 109
RS232 Pin Assignments..................................................................................................... 109
RS232 RJ45 Control Connection ....................................................................................... 109
SET Command................................................................................................................... 110
GET Command .................................................................................................................. 113
LED Indicator........................................................................................................................... 115
Port Information....................................................................................................................... 115
Troubleshooting....................................................................................................................... 117
Maintenance............................................................................................................................ 118
Cleaning the Screen........................................................................................................... 118
Clean the Front Frame ....................................................................................................... 118
Optoma Global O󰀩ces ............................................................................................................ 119

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SAFETY
Please follow all warnings, precautions and maintenance as recommended in this user manual.
Safety Instructions
• Only use attachments/accessories specied by the manufacturer.
• Do not block any ventilation openings. To ensure reliable operation of the device and to protect from
overheating, it is recommended to install the device in a location that does not block ventilation. Do not
put the device in an enclosure such as a book case or a cabinet that restricts air ow.
• Do not use the device near water or moisture. To reduce the risk of re and/or electric shock, do not
expose the device to rain or moisture.
• Do not install near heat sources such as radiators, heaters, stoves or any other apparatus, such as
ampliers, that emits heat.
• Do not let objects or liquids enter the device. They may touch dangerous voltage ports or short out parts
that could result in re or electric shock.
• Do not place the device on an unstable surface. The device may fall over, resulting in injury or damage
to the device.
• Do not setup the device in places where it might be subject to vibration or shock.
• Do not use any hard or sharp object to touch the screen.
• Do not use the device if it has been physically damaged or abused. Physical damage/abuse would be
(but not limited to):
– The device has been dropped.
– Power supply cord or plug has been damaged.
– Liquid has been spilled on to the device.
– The device has been exposed to rain or moisture.
– Something has fallen in the device or something is loose inside.
• Do not attempt to service the device yourself. Opening or removing covers may expose you to dangerous
voltages or other hazards. Please call Optoma before you send the device for repair.
• Disconnect the power plug from AC outlet if the device is not being used for a long period of time.
• Remove the batteries from the remote control before storage. If the batteries are left in the remote for
long periods, they may leak.
• Turn o󰀨 and unplug the power plug from the AC outlet before cleaning the device.
• Use a soft dry cloth with mild detergent to clean the display housing. Do not use abrasive cleaners,
waxes or solvents to clean the device.
• See the device enclosure for safety related markings.
• The device should only be repaired by appropriate service personnel.

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Copyright
This publication, including all photographs, illustrations and software, is protected under international copyright laws,
with all rights reserved. Neither this manual, nor any of the material contained herein, may be reproduced without
written consent of the author.
©Copyright 2023
Disclaimer
The information in this document is subject to change without notice. The manufacturer makes no representations or
warranties with respect to the contents hereof and specically disclaims any implied warranties of merchantability or
tness for any particular purpose. The manufacturer reserves the right to revise this publication and to make changes
from time to time in the content hereof without obligation of the manufacturer to notify any person of such revision or
changes.
Trademark Recognition
Kensington is a U.S. registered trademark of ACCO Brand Corporation with issued registrations and pending
applications in other countries throughout the world.
HDMI, the HDMI Logo, and High-Denition Multimedia Interface are trademarks or registered trademarks of HDMI
Licensing LLC in the United States and other countries.
Google, the Google logo, and Google Drive are trademarks or registered trademarks of Google LLC.
OneDrive is a trademark and brand of Microsoft Corporation.
All other product names used in this manual are the properties of their respective owners and are Acknowledged.
FCC Statement
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment o󰀨 and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit di󰀨erent from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
FCC Warning
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired operation.
Notice: Canadian users
This Class B digital apparatus complies with Canadian CAN ICES-3 (B)/NMB-003 (B).
Remarque à l'intention des utilisateurs canadiens
Cet appareil numerique de la classe B est conforme a la norme NMB-003 du Canada.

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Declaration of Conformity for EU Countries
• EMC Directive 2014/30/EU (Including amendments)
• Low Voltage Directive 2014/35/EU
WEEE
Disposal instructions
Do not throw this electronic device into the trash when discarding. To minimize pollution and ensure
utmost protection of the global environment, please recycle it.
ENERGY STAR
ENERGY STAR is a U.S. Environmental Protection Agency voluntary program that helps businesses
and individuals save money and protect our climate through superior energy e󰀩ciency. Products
that earn the ENERGY STAR prevent greenhouse gas emissions by meeting strict energy e󰀩ciency
criteria or requirements set by the U.S. Environmental Protection Agency. The following logo appears
on all ENERGY STAR-certied models:
This product qualies for ENERGY STAR in the “Standard mode” setting and this is the setting in
which power savings will be achieved. Changing the Standard mode picture settings or enabling
other features will increase power consumption that could exceed the limits necessary to qualify for
ENERGY STAR rating. Refer to EnergyStar.gov for more information on Energy Star program.
Low Blue Light and Eye Health
What is Low Blue Light Technology?
Low Blue Light Technology reduces the blue-light component emitted by your product. The harm of blue light to
human eyes is mainly manifested in the pathological harm of eyes and the harm of human body rhythm, which lead
to myopia, cataract and macular disease.
Low blue light certication: it is a certication project to evaluate whether the display equipment meets the requirements
of photobiosafety and UV free radiation safety.
Note: To meet TUV Rheinland of low blue light certicate, the display setting should be:
- Display Mode is Presentation
- Color Temperature is Standard
- Low Blue Light is 100.
Calculating Breaks
It is recommended to take a 10-minute break every hour of continuous screen use.
Note: Remember to blink your eyes often to keep them healthy and avoid dryiness.
Looking at Distant Objects
During the break look at distant objects or close your eyes.This helps to relax your ciliary (focusing) muscle and
avoids eye strain.
How to Exercise Your Eyes?
1. Hold your pointer nger a few inches away from your eye.
2. Focus on your nger.
3. Slowly move your nger away from your face, holding your focus.
4. Look away for a moment, into the distance.
5. Focus on your outstretched nger and slowly bring it back toward your eye.

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INTRODUCTION
Package Contents
Carefully unpack and verify that you have the items listed below under standard accessories. Some of the items
under optional accessories may not be available depending on the model, specication and your region of
purchase. Please check with your place of purchase. Some accessories may vary from region to region.
The warranty card is only supplied in some specic regions. Please consult your dealer for detailed information.
Standard Accessories
HDMI Cable Remote Control Batteries
(for remote control)
Quick Start Guide
*The product images shown are for illustrative purposes only and may not be an exact representation of the product.
Optoma reserves the right to change product images and specifications at any time without notice.
Quick Start Guide
FlatPanel
https://www.optoma.com/support/download
For detailed instructions, please scan the QR code or visit the URL:
European Power Cord American Power CordFlat Panel UK Power Cord
Note: For warranty information, please visit www.optoma.com.

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INTRODUCTION
Optional Accessories
Wall Mount with Vesa
Bracket
55” ~ 65” (WIB6560A)
75” ~ 98” (WIB9080A)
OPS Slot-in PC Stand Mount Wi-Fi Dongle SI07B
(Region optional)

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INTRODUCTION
Product Overview
Front View
1
2
3
4
5
6
7
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No. Item No. Item
1. LED indicator 5. Left (t) button
2. Power button 6. Right (u) button
3. Menu button 7. Down (q) / Volume Down button
4. Input button 8. Up (p) / Volume Up button
Note: When the OSD menu pops up, the Input button can be used as a selection key.