JMGO J78-4D0 Ultra Short Throw Projector User Manual
- June 9, 2024
- JMGO
Table of Contents
J78-4D0 Ultra Short Throw Projector
User Manual
Announcement
JMGO is committed to continuously improving product performance and
functionality. The images and function descriptions in the product manual are
subject to product and factory presets. JMGO reserves the right to improve the
functionality and user interface described in the manual without prior notice.
In such cases, please refer to the actual product. Please take proper care of
your product. JMGO is not responsible for any losses caused by the improper
operation of software, hardware, or maintenance, nor any losses resulting from
the disclosure of personal information to a third party. JMGO is not
responsible for any accidental losses thot may occur during the use of this
manual, nor will it be responsible for any third-party claims arising from the
use of this product.
The function descriptions of the product have been carefully reviewed and
proofread by JMGO personnel. If you find any omissions, we would like to
apologize and would appreciate your feedback. To learn more about JMGO’s
products and value-added services, visit our Official WeChat Account: JMGO or
official website: www.jmgo.com.
This product is only sold in Mainland China.
Safety Notice >
- Read this product manual thoroughly before attempting to use this product Store the product manual in a safe location so it may be referenced at any time.
- Do not block the air inlet or outlet of the product with any objects when it is projecting an image. Doing so may result in excessive internal temperatures and damage to the projector.
- D0 not hit or drop the product from a significant height
- Do not place objects (such as the remote control or sundries) on top of the device as they may slide onto the light outlet, blocking the light path and scratching or staining the glass lens.
- Do not look directly into the light outlet (lens) of the device as your eyes may be damaged by a strong laser.
- If you encounter an issue with the product, do not attempt to disassemble it without authorization. Contact professional after-sales personnel to resolve the issue.
Certificate of Conformity
CERTIFICATE INSPECTED
Note: The serial number is shown on the product name plate
Thank You for Choosing Us!
THANK YOU LETTER
Dear JMGO Customer,
Thank you for choosing the JMGO Projector! We have a lot of love for this
product, and we hope you love it too. Once you turn your new projector on, we
hope you can feel the care and passion we’ve poured into crafting a great
experience.
More than just an audiovisual device, the projector can bring any blank patch
of wall bursting into life. It also has many smart features to integrate
seamlessly with your other devices. Over the past ten years, we have focused
on R&D of core components and continuously improving our product experience.
Thanks to our engineers’ efforts, we are now one of the leading players in the
smart projector and laser TV industries.
If you like this product, please tell your friends and help us grow the JMGO
family!
Chairman:
Scope of Delivery >
*Note: Thank you for purchasing this JMGO product. Please check whether the items you received ore consistent with the list; If any discrepancy is observed, please contact JMGO customer service as soon as possible.
Product Manual >
Step 1. Place the device 10 cm – 30 cm in front of a flat white wall or
curtain.
We recommend that the center of the screen is level with the human eye. 
This product supports a projection screen size of 70- 110 in,
with an optimal projection screen size of 100 in (16.9) at a wall/screen
distance of 9.5 cm – 28 cm. Users can select the screen size and corresponding
placement position that best suits their actual scenario.
| Distance between the projector and the wall | 9.5cm | 14cm | 19cm | 23.5cm | 28cm |
|---|---|---|---|---|---|
| Projection Size | 70″ | 80″ | 90″ | 100″ (optimal) | 110″ |
Step 2. Connect the DCIN port and projector socket through an adapter and
power cable, then confirm that the projector is powered on.
Step 3. Press the button on the top of the projector or the Luna key on
the remote control to turn the projector on and enter the initial boot setup
process. Follow the instructions to configure the projector network, screen,
and other functionality to ensure you can enjoy the best experience. 
Projector Buttons, Ports, and Indicators >
Indicator Light & Push Switch Function >
The indicator will display a bright light while the projector is in Movie Mode
The indicator will display a faint light while the projector is in Companion
Mode
When the project is on, quickly press the switch two times. The projector will
shut down and the indicator will turn off.
Press the switch while the projector is off. The projector will turn on and
enter Companion Mode. The indicator will display a faint light.
Common External Devices >
Remote Control > 
Bluetooth Pairing >
- The projector will automatically pair with the Bluetooth remote control after it has been turned on. If the remote control is replaced or fails to pair automatically, Bluetooth pairing must to be done manually.
- After the projector is turned on and enters the system, press and hold the Shortcut Center key and the Settings key for 2 seconds. The indicator light will flash white to enter Bluetooth pairing mode.
- Go to Settings > Bluetooth, and search for Bluetooth device: RemoteControl.
- If the white light turns on for 2 seconds, the pairing was successful, and there will be a corresponding prompt on the system interface. If the indicator light goes out, pairing failed and needs to pair again.
- After Bluetooth pairing is successful, the indicator light will be white, and the voice function can be used. If the system prompts for pairing, please follow the system instructions.
Switching Modes >
The projector con switch between different modes using the Luna key and Home
key on the remote control. 
- Press the Luna key to switch between Movie Mode and Companion Mode.
- Press and hold the Luna key to enter sleep mode. When the device is in sleep mode, press the Luna key again to exit sleep mode.
- Press and hold the Luna key and Home key at the some time to show the shutdown menu. You con choose either shutdown, restart, or scheduled shutdown.
Network/Bluetooth Settings >
Press the Settings key on the remote control, then select Network/Bluetooth.
Wireless/Ethernet Connection
- Select WLAN and enter the Wi-Fi password to connect to a wireless network.
You con also select Ethernet Network for a coble connection. An Ethernet coble must be connected to the RJ45 port of the device.
Bluetooth Connection
- Select Connect Bluetooth to connect Bluetooth devices such as speakers, headsets, keyboards, and mice.
Projection Screen & Video Settings >
Press the Settings key on the remote control, then select Projection Settings.
Focus Adjustment >
- Whenever the mode or position of the projector changes while Autofocus is enabled, the focus will be adjusted whenever the user presses and holds the Settings Key on the remote control.
- Users con manually adjust the focus by pressing the Focus Key on the side of the remote control.
Keystone Correction >
- Whenever the mode or position of the projector changes while Automatic Keystone Correction is enabled, the projector will perform keystone correction to ensure the aspect ratio in 16:9.
- Users can enter the Manual Keystone Correction page to perform corresponding operations.
Correction Assist >
- Enable the Correction Assist function, move the device so that the projected image covers an area slightly larger than the screen frame, then manually adjust the corners of the image to match the corners of the screen in accordance with the instructions.
- If the effect of Automatic Keystone Correction is not satisfactory, select Level Correction to correct the device to a level position.
- If the effect of Autofocus is not satisfactory, select Autofocus Calibration to further calibrate the autofocus.
Auto Brightness >
- Go to Brightness and select Auto to make the projector automatically adjust the brightness of the screen whenever the ambient brightness changes. You can also select High Brightness, Standard, or Gentle options to manually adjust the brightness.
Press the Settings key on the remote control, then select Video Settings.
Wall Color Calibration >
When Wall Color Calibration is enabled, the projector will automatically
adjust the color temperature of the screen whenever the ambient temperature
changes.
Other Video Settings >
Users can also configure more specialized video settings such as Image Noise
Reduction, Low Latency Mode, Motion Compensation, HOR, and Color Temperature
through the Video Settings.
Companion Mode >
The “Companion + Movie” modes create a parallel space that delivers innovative
possibilities for home projection scenarios and interaction. Based on the
principle of projector imaging, Companion Mode delivers the
Users can switch between Companion Mode and Movie Mode by pressing the
corresponding switch on the projector or pressing the Luna key on the remote
control. Different settings can be selected while in Companion Mode.
(For specific operations, please refer to the JMGO opp)
Message Board
• A message board that displays a variety of information about your home.
Users can customize the type and arrangement of information sections through
the JMGO app.
Music Visualizer
• The projector comes with a variety of built-in customized rhythm and lyric
effects, supports Bluetooth music, adjusts visualization effects in accordance
with different genres, and links together senses such as hearing, sight, and
emotion.
Digital Art Gallery
• JMGO has entered into an exclusive partnership with world-renowned new media
art platform MANA to provide users with digital pieces from the world’s top
new media artists.
Dynamic Weather
• The dynamic weather function provides the user with real-time weather
information of their city and helps enrich the home environment with a variety
of visual weather effects.
Floating Clock
• The floating clock takes full advantage of the big screen, making it easy
to tell time at a glance and giving the wall a cool visual effect
Content Source Selection & Screen Share/Projection Configuration >
Switching Video Signal Source
Press the Settings key on the remote control, then select Signal Source to
enter the selection interface Select HDMI ARC or HDMll to project external
audio and video signal sources. Select Local to use the internal video
software of the projection device to obtain audio and video resources from the
network.
Screen Share/Projection Configuration
Connect the projector and your device (mobile phone, laptop, etc) to the same
network, then click the screen share function on Eshare to share/project the
video to the projector.
**Smart Functions >
**
Amazon Alexia”
This projector supports voice control via Amazon Alexa. Amazon Alexa· is
activated by pressing the Alexa key. Press and hold the key to speak commands.
Smart Eye Protection
When pets or children enter the vicinity of the laser path while Smart Eye
Protection is active, the projector will greatly reduce the brightness to
protect their eyes from harm.
You can enable this function from:
Settings > Projection Settings> Eye Protection Mode. When Eye Protection Mode
is On, the projection screen will enter Low Blue Light Mode. When Eye
Protection Mode is Automatic, the system will intelligently detect when
children/education content is being played to enter Low Blue Light Mode.
Gesture Controls
When Gesture Operation is enabled, the user can perform Mute, Volume Up/Down,
through gestures.
Sound Mode >
Press the Settings key on the remote control, then select Audio Settings.
Audio Mode
Users can select different sound modes to enhance the look and feel of various
audio and video sources.
Audio Output
Users can choose to use the speakers that come with the projector or more
specialized speaker equipment through the SPDIF port. Adjust the SPDIF Delay
parameter if audio is not synchronized with the video.
System Update >
This product supports both online and local updates.
Online Update: Head to Settings > System Update Version. The system will
automatically detect if your software is up-to-date. You will receive a prompt
if the software is already the latest version. If your software is out-of-
date, you will be asked if you wish to update it.
*Note: JMGO regularly releases software updates as continuous maintenance
services. We may push software updates without prior notice to ensure users
can enjoy up-to-date experiences and services.
Local Update: Download the software update package from the JMGO website, copy
the file to the root directory of a hard disk or USB, then insert the hard
disk or USB into the USB port on the projector body. Head to Settings >
System Update Version, then select Local Update. The system will automatically
detect and install the update package.
Note: Do not unplug the USB or cut off power during the update process.
Download and Install of “JMGO app” >
- JMGO opp is a mobile opp that enables multi-screen interaction with JMGO projectors through virtual touch controls and opens up a world of art and imagination through Companion Mode.
- JMGO opp supports Intelligent Image Flattening with your mobile phone camera. Projecting onto an uneven surface may result in image distortion. This function provides quick image correction and auxiliary calibration.
https://en.jmgo.com/remote.html
Environmental Protection >
This Environment-Friendly Use Period (EFUP) label indicates that the device will not leak hazardous substances, which could cause harm to health or the environment, during 10 years of normal use. During normal use conditions, there will be no leakage or sudden change of hazardous substances, no serious pollution to the environment, and no serious damage to people or property. Name and content of trace toxic and harmful substances or elements contained in each component of the product:
Component Name
| Hazardous Substances
---|---
Lead (Pb)| Mercury (Hg)| Cadmium (Cd)| Hexavalent
Chromium (Cr(VI))| Polybrominated Biphenyls (PBB)|
Polybrominated Diphenyl Ethers (PBDE)
Bb
| X| 0| 0| 0| 0|
0
Remote Control
| X| 0| 0| 0| 0| 0
Cable| 0| 0| 0| 0| 0|
0
Adapter
| X| 0| 0| 0| 0| 0
Packaging Material| 0| 0| 0| 0| 0|
0
0: The content of the hazardous substances in all homogeneous materials in the component is less than the limit set forth in GB/T26572-2011.
X: The content of hazardous substances in at least one of the homogeneous materials in the component exceeds the limit set forth in GB/T26572-2011.
After-Sales Service Policy
Shenzhen Holatek Co, Ltd. (hereinafter “JMGO”) formulates its after-sales
policies in strict accordance with relevant laws and regulations to provide
the “three guarantees” of repair, replacement, and return.
Warranty Policy
Service Period: The validity period of “three guarantees” commences from the
date of purchase or the date of receipt of the package. If the product
experiences a performance failure, the package must be returned within 30
days. The projector is guaranteed for l year.
| Scope of Warranty | Warranty Content | Warranty Period |
|---|---|---|
| Projector | The projector and its constituent components | I year |
| Accessories | Separately sold accessories and internal accessories | I year |
Note: The warranty period shown in the table above is distributor
recommendation only. Specific local laws and regulations shall prevail. If you
encounter any problems or want to know more about the after-sales information,
you can email [email protected] for advice.
Non-Warranty Policy
This product is not covered by warranty in the following circumstances: The
validity period of “three guarantees” has been exceeded; maintenance, misuse,
collision, negligence, abuse, liquid ingress, accident, alteration,
disassembly, or improper use of accessories has been carried out without
authorization from JMGO; quality problems have occurred due to the
installation of unauthorized software; or labels, device serial numbers, or
anti-counterfeiting labels have been destroyed or altered; the model of the
“three guarantees” certificate does not match or the model of the damaged
product, or has otherwise been altered; damage caused by force majeure; damage
caused by use in environments that do not conform to the specifications of the
product manual; damage caused by use in environments that do not conform to
the specifications of the product manual; failure or damage caused by computer
viruses, hacker intrusion, or other malicious intrusions; damage caused by the
use of software that is not authorized by JMGO.
Three Guarantees Policy
Return or replacement will not be provided in the following circumstances:
Damage caused by human action; missing or damaged packaging; or missing or
damaged internal components. When seek for return or replacement, please
return all provided accessories as well (including but not limited to product
accessories, gifts, warranty cards, manual, etc.). To ensure a smooth return
or replacement process, we recommend that you keep the outer packaging,
accessories, and any free gifts provided with the products for 30 days from
the date of receipt. JMGO has the right to refuse the return or replacement of
products that do not meet the replacement requirements or exceeded the
warranty period.
Back up your personal data and applications before seeking replacement or
repair. The maintenance process may result in the loss of your personal data
and applications. JMGO will protect your personal privacy but takes no
responsibility for any damage or loss of personal data and applications
resulting from the repair or replacement process.
Three Guarantees Service Card
Repair/Return/Replacement Service Instructions This service card helps JMGO
process repair, return, and replacement requests faster.
- Before filling in the service card, please contact us to ensure that we can help solve the problem. After-Sales service email: [email protected]
- After you have filled in the service card, please return it to us in the same package as the product.
Return: Replacement: Repair: Please indicate with a √
Product Serial Number: ————- Item Details ————–
Fault Description (required): ——————
‘In order to shorten the repair, return, or replacement time, please fill in
the reason truthfully. This helps the request make it through the inspection
process as soon as possible.
Order Information ————–
Vendor Store (required): ————
Purchase Order (required). ————
Purchase Account No. (required): —————
Date of Purchase: YYYYMMDD____
- If you did not receive a purchase order, please provide a copy of the purchase voucher.
Contact Information ————
Name: ————— Phone ————-
Address: —————– - Replaced and repaired products will be returned to the following address. Please ensure the details are filled in correctly.
After-Sales Service Channels
If you encounter any problems while using the product, contact us through one of the following channels:
After-Sales Website: global.jmgo.com
After-Sales service email: [email protected]
