BenQ BL2785TC User manual

LCD Monitor
User Manual
Business Monitor | BL Series

2
Copyright
Copyright © 2022 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.
Disclaimer
BenQ Corporation makes no representations or warranties, either expressed or implied, with
respect to the contents hereof and specifically disclaims any warranties, merchantability or
fitness 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.
BenQ flicker-free technology maintains a stable backlight with a DC dimmer that eliminates the
primary cause of monitor flicker, making it easier on the eyes. The performance of flicker-free
may be affected by external factors such as poor cable quality, unstable power supply, signal
interference, or poor grounding, and not limited to the above mentioned external factors.
(Applicable for flicker-free models only.)
BenQ ecoFACTS
BenQ has been dedicated to the design and development of greener product as part of its
aspiration to realize the ideal of the "Bringing Enjoyment 'N Quality to Life" corporate vision
with the ultimate goal to achieve a low-carbon society. Besides meeting international regulatory
requirement and standards pertaining to environmental management, BenQ has spared no
efforts in pushing our initiatives further to incorporate life cycle design in the aspects of
material selection, manufacturing, packaging, transportation, using and disposal of the products.
BenQ ecoFACTS label lists key eco-friendly design highlights of each product, hoping to ensure
that consumers make informed green choices at purchase. Check out BenQ's CSR Website at
http://csr.BenQ.com/ for more details on BenQ's environmental commitments and
achievements.

3
Product support
This document aims to provide the most updated and accurate information to customers, and
thus all contents may be modified from time to time without prior notice. Please visit the
website for the latest version of this document and other product information. Available files
vary by model.
1. Make sure your computer is connected to the Internet.
2. Visit the local website from Support.BenQ.com. The website layout and content may vary
by region/country.
• User manual and related document
• Drivers and applications
• (EU only) Dismantled information: Available on the user manual download page. This document is
provided based on Regulation (EU) 2019/2021 to repair or recycle your product. Always contact
the local customer service for servicing within the warranty period. If you wish to repair an
out-of-warranty product, you are recommended to go to a qualified service personnel and obtain
repair parts from BenQ to ensure compatibility. Do not disassemble the product unless you are
aware of the consequences. If you cannot find the dismantled information on your product,
contact the local customer service for assistance.
EPREL Registration Number:
BL2485TC: 755735
BL2785TC: 755743

4
Q&A index
Start with the topics that you are interested in.
Setup
Useful tools to enhance efficiency
Menus and accessories
Maintenance and product support
How to set up the monitor and turn it on?
Safety precautions 5
How to assemble your monitor hardware 17
How to adjust the monitor viewing angle?
Viewing angle adjustment 25
How to wall mount the monitor?
Using the monitor wall mounting kit (purchased separately) 26
How to use the built-in microphone?
Working with the built-in microphone 30
How to connect two ore more monitors to have more screen
space?
Connecting multiple monitors via MST (Multi-Stream Transport) 31
How to use the OSD menu?
Basic menu operation 28
Navigating the main menu 33
How to clean the monitor?
Care and cleaning 8
How to keep the monitor not in use for a long time?
How to detach the stand and the base 21
Care and cleaning 8
I need more support.
Product support 3
Servicing 8

5
Safety precautions
Power safety
• The AC plug isolates this equipment from the AC supply.
• The power supply cord serves as a power disconnect device for pluggable equipment. The
socket outlet should be installed near the equipment and be easily accessible.
• This product should be operated from the type of power indicated on the marked label. If you
are not sure of the type of power available, consult your dealer or local power company.
• The Class I pluggable equipment Type A must be connected to protective earth.
• An approved power cord greater or equal to H03VV-F or H05VV-F, 2G or 3G, 0.75mm2must
be used.
• Use only the power cord provided by BenQ. Never use a power cord that appears to be
damaged or frayed.
• To avoid possible damage to the monitor, do not use it in a region where power supply is
unstable.
• Ensure that the power cord is connected to a grounded power outlet before turning on the
monitor.
• To avoid possible danger, observe the total electric load when using the monitor with a
(multi-outlet) extension cord.
• Always turn off the monitor before unplugging the power cord.
For Germany only:
• (If the weight of the product is less than or equal to 3 kg) An approved power cord greater or
equal to H03VV-F, 3G, 0.75mm2must be used.
• (If the weight of the product is more than 3 kg) An approved power cord greater or equal to
H05VV-F or H05RR-F, 3G, 0.75mm2must be used.
• (If a remote control is provided) RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN
INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE
INSTRUCTIONS.
For models with adapter:
• Use only the power adapter supplied with your LCD Monitor. Use of another type of power
adapter will result in malfunction and/or danger.
Please follow these safety instructions for best performance, and long life for your monitor.
10-90% 0-3000m0-40°C 10-60% 0-12000m-20-60°C

6
• Allow adequate ventilation around the adapter when using it to operate the device or charge
the battery. Do not cover the power adapter with paper or other objects that will reduce
cooling. Do not use the power adapter while it is inside a carrying case.
• Connect the power adapter to a proper power source.
• Do not attempt to service the power adapter. There are no service parts inside. Replace the
unit if it is damaged or exposed to excess moisture.
Installation
• Do not use your monitor under any of the following environmental conditions:
• Extremely high or low temperature, or in direct sunlight
• Dusty places
• Highly humid, exposed to rain, or close to water
• Exposed to vibrations or impacts in places such as cars, buses, trains, and other rail vehicles
• Near heating appliances such as radiators, heaters, fuel stoves, and other heat-generating items
(including audio amplifiers)
• An enclosed place (such as a closet or bookcase) without appropriate ventilation
• An uneven or sloping surface
• Exposed to chemical substances or smoke
• Carry the monitor carefully.
• Do not place heavy loads on the monitor to avoid possible personal injury or damage to the
monitor.
• Ensure that children do not hang or climb onto the monitor.
• Keep all packing bags out of reach of children.
Operation
• To protect your eyesight, please refer to the user manual to set the optimal screen resolution
and the viewing distance.
• To reduce eye fatigue, take a break on a regular basis while using the monitor.
• Avoid taking either one of the following actions for a long time. Otherwise, burn marks may
occur.
• Play images that cannot occupy the screen entirely.
• Place a still image on the screen.
• To avoid possible damage to the monitor, do not touch the monitor panel by finger tip, pen, or
any other sharp objects.
• Excessively frequent plug and unplug of video connectors may cause damage to the monitor.
• This monitor is designed mainly for personal use. If you want to use the monitor in a public
place or a harsh environment, contact your nearest BenQ service center for assistance.
• To avoid possible electric shock, do not dissemble or repair the monitor.
• If a bad smell or an abnormal sound appears to come from the monitor, contact your nearest
BenQ service center for assistance immediately.

7
Caution
• The monitor should be 50 ~ 70 cm (20 ~ 28 inches) away from your eyes.
• Looking at the screen for an extended period of time causes eye fatigue and may deteriorate
your eyesight. Rest your eyes for 5 ~ 10 minutes for every 1 hour of product use.
• Reduce your eye strain by focusing on objects far way.
• Frequent blinking and eye exercise help keep your eyes from drying out.
Safety notice for remote control (applicable if a remote control
is provided)
• Do not put the remote control in the direct heat, humidity, and avoid fire.
• Do not drop the remote control.
• Do not expose the remote control to water or moisture. Failure to do so could result in
malfunction.
• Confirm there is no object between the remote control and the remote sensor of the
product.
• When the remote control will not be used for an extended period, remove the batteries.
Battery safety notice (applicable if a remote control is provided)
The use of the wrong type of batteries may cause chemical leaks or explosion. Please note the
following:
• Always ensure that the batteries are inserted with the positive and negative terminals in the
correct direction as shown in the battery compartment.
• Different types of batteries have different characteristics. Do not mix different types.
• Do not mix old and new batteries. Mixing old and new batteries will shorten battery life or
cause chemical leaks from the old batteries.
• When batteries fail to function, replace them immediately.
• Chemicals which leak from batteries may cause skin irritation. If any chemical matter seeps
out of the batteries, wipe it up immediately using a dry cloth, and replace the batteries as soon
as possible.
• Due to varying storage conditions, the battery life for the batteries included with your
product may be shortened. Replace them within 3 months or as soon as you can after initial
use.
• There may be local restrictions on the disposal or recycling of batteries. Consult your local
regulations or waste disposal provider.
If the supplied remote control contains a coin / button cell battery, pay attention to the
following notice as well.
• Do not ingest battery. Chemical Burn Hazard.

8
• The remote control supplied with this product contains a coin / button cell battery. If the coin
/ button cell battery is swallowed, it can cause severe internal burns in just 2 hours and can
lead to death.
• Keep new and used batteries away from children. If the battery compartment does not close
securely, stop using the product and keep it away from children.
• If you think batteries might have been swallowed or placed inside any part of the body, seek
immediate medical attention.
Care and cleaning
• Do not place the monitor face down on the floor or a desk surface directly. Otherwise,
scratches on the panel surface may occur.
• The equipment is to be secured to the building structure before operation.
• (For models that support wall or ceiling mounting)
• Install your monitor and monitor mounting kit on a wall with flat surface.
• Ensure that the wall material and the standard wall mount bracket (purchased separately) are
stable enough to support the weight of the monitor.
• Turn off the monitor and the power before disconnecting the cables from the LCD monitor.
• Always unplug the product from the power outlet before cleaning. Clean the LCD monitor
surface with a lint-free, non-abrasive cloth. Avoid using any liquid, aerosol or glass cleaners.
• Slots and openings on the back or top of the cabinet are for ventilation. They must not be
blocked or covered. Your monitor should never be placed near or over a radiator or heat
sources, or in a built-in installation unless proper ventilation is provided.
• Do not place heavy loads on the monitor to avoid possible personal injury or damage to the
monitor.
• Consider keeping the box and packaging in storage for use in the future when you may need
to transport the monitor.
• Refer to the product label for information on power rating, manufacture date, and
identification markings.
Servicing
• Do not attempt to service this product yourself, as opening or removing covers may expose
you to dangerous voltages or other risks. If any of the above mentioned misuse or other
accident such as dropping or mishandling occurs, contact qualified service personnel for
servicing.
• Contact your place of purchase or visit the local website from Support.BenQ.com for more
support.

9
General warranty information
Note that the monitor warranty may be void if any of the following conditions occurs:
• Documents required for warranty services have been altered by unauthorized use or is
illegible.
• The model number or production number on the product has been altered, deleted, removed
or made illegible.
• Repairs, modifications, or alterations have been made by unauthorized service organizations
or persons.
• Damage caused by improper storage of the monitor (including but not limited to force
majeure, direct exposure to sunlight, water, or fire).
• Reception problems occurred due to external signals (such as antenna, Cable TV) outside the
monitor.
• Defects caused by abuse or misuse of the monitor.
• Before using the monitor, it is the sole responsibility of the user to check whether the
monitor is compatible with local technical standards if the user brings the monitor out of its
intended sales area. Failure to do so may cause product breakdown and the user will have the
pay the repairing costs.
• It is the sole responsibility of the user if problems (such as data loss and system failure)
occurred due to non-factory provided software, parts, and/or non-original accessories.
• Please use the original accessories (e.g. power cable) only with the device to avoid possible
dangers such as electric shock and fire.
Typographics
In this document, the steps needed to reach a menu may be shown in condensed form, for
example: Menu > System > Information.
Icon / Symbol Item Meaning
Warning Information mainly to prevent the damage to components,
data, or personal injury caused by misuse and improper
operation or behavior.
Tip Useful information for completing a task.
Note Supplementary information.

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Table of Contents
Copyright ......................................................................................................................................2
Product support ...........................................................................................................................3
Q&A index ....................................................................................................................................4
Safety precautions .......................................................................................................................5
Power safety................................................................................................................................................ 5
Installation.................................................................................................................................................... 6
Operation..................................................................................................................................................... 6
Safety notice for remote control (applicable if a remote control is provided)........................... 7
Battery safety notice (applicable if a remote control is provided) ................................................. 7
Care and cleaning....................................................................................................................................... 8
Servicing........................................................................................................................................................ 8
General warranty information ................................................................................................................ 9
Getting started .......................................................................................................................... 12
Getting to know your monitor ............................................................................................. 14
Front view.................................................................................................................................................. 14
Back view ................................................................................................................................................... 14
Connections .............................................................................................................................................. 15
Power delivery of USB-C™ ports on your monitor ....................................................................... 16
How to assemble your monitor hardware ........................................................................ 17
How to detach the stand and the base ............................................................................................... 21
Adjusting the monitor height ................................................................................................................ 23
Rotating the monitor .............................................................................................................................. 24
Viewing angle adjustment ....................................................................................................................... 25
Using the monitor wall mounting kit (purchased separately) ........................................................ 26
How to adjust your monitor ................................................................................................. 27
The control panel..................................................................................................................................... 27
Basic menu operation ............................................................................................................................. 28
Customizing the hot keys....................................................................................................................... 29
Adjusting display mode ........................................................................................................................... 29
Choosing an appropriate picture mode.............................................................................................. 30
Adjusting screen brightness automatically (Bright Intelligence, selected models only) ........... 30
Enabling color vision accessibility (Color Weakness).................................................................. 30
Working with the built-in microphone............................................................................................... 30
Charging the connected device via USB-C™ port .......................................................................... 31
Connecting multiple monitors via MST (Multi-Stream Transport) .............................................. 31
Navigating the main menu ...................................................................................................... 33
Input menu ............................................................................................................................................... 34
Learning menu ....................................................................................................................................... 35
Mode menu .............................................................................................................................................. 37

Eye Care menu .......................................................................................................................................39
Color menu ..............................................................................................................................................41
Audio menu .............................................................................................................................................43
Custom menu .........................................................................................................................................45
System menu ...........................................................................................................................................47
Troubleshooting ........................................................................................................................51
Frequently asked questions (FAQ)....................................................................................................... 51
Need more help?...................................................................................................................................... 54
10/20/22
BL85T-EM-V4

12 Getting started
Getting started
When unpacking please check you have the following items. If any are missing or damaged,
please contact the place of purchase for a replacement.
BenQ LCD Monitor
Monitor Stand
Monitor Base
Quick Start Guide
Safety Instructions
Regulatory Statements
Power Cord
(Supplied item may differ by model or
region.)
Quick Start Guide
Safety
Instructions
Regulatory
Statements

13Getting started
Video Cable: HDMI
(Varies by region)
Video Cable: USB-C™
(Varies by region)
• Available accessories and the pictures shown here may differ from the actual contents and the product supplied
for your region. And the package contents may subject to change without prior notice. For cables that are not
supplied with your product, you can purchase them separately.
• Consider keeping the box and packaging in storage for use in the future when you may need to transport the
monitor. The fitted foam packing is ideal for protecting the monitor during transport.
• Accessories and cables may be included or sold separately depending on the product supplied for your region.
Always keep the product and accessories out of reach of small children.

14 Getting to know your monitor
Getting to know your monitor
Front view
Back view
1. Light sensor (available for models with
Bright Intelligence)
2. Built-in microphone
3. Control buttons
4. Power button
5. Power LED indicator
6. MIC LED indicator (See page 31 for
details.)
4/531 2
6
7. Headphone jack
8. HDMI socket
9. DisplayPort socket
10. USB-C™ port (for signal transmission
and power delivery up to 60W)
11. DisplayPort output socket (for
Multi-Stream Transport, MST)
12. Kensington lock slot
13. AC power input jack
87109 11
13
12
• Above diagram may vary depending on the model.
• Picture may differ from product supplied for your region.

15Getting to know your monitor
Connections
The following connection illustrations are for your reference only. For cables that are not
supplied with your product, you can purchase them separately.
For detailed connection methods, see page 19.
PC / Notebook
Speakers /
Headphone

16 Getting to know your monitor
Power delivery of USB-C™ ports on your monitor
With the power delivery function, your monitor helps supply power to the connected
USB-C™ devices. Available power varies by port. Make sure the devices are connected to the
appropriate ports to be activated properly with sufficient power.
• A connected device needs to be equipped with a USB-C™ connector that supports charging
function via USB power delivery.
• The connected device can be charged via USB-C™ port even when the monitor is in power
saving mode.(*)
• The USB power delivery is up to 60W. If the connected device requires more than 60W for
operation or for boot up (when the battery is drained), use the original power adapter that
came with the device.
• The information is based on the standard testing criteria and is provided for reference. The
compatibility is not guaranteed as the user environments vary. If a separately purchased
USB-C™ cable is used, make sure the cable is certified by USB-IF and is full-featured, with
power delivery and video / audio / data transfer functions.
BL2485TC / BL2785TC
USB-C™ Power Delivery
5V / 3A
9V / 3A
12V / 3A
15V / 3A
20V / 3A
*: Charging via USB-C™ in monitor power saving mode is available when the USB-C power delivery function is
enabled. Go to System > USB-C Charging 60W and select ON.

17How to assemble your monitor hardware
How to assemble your monitor hardware
• If the computer is turned on you must turn it off before continuing.
• Do not plug-in or turn-on the power to the monitor until instructed to do so.
• The illustrations in this document are for your reference only and may look different from the appearance of
the product.
• Avoid finger pressure on the screen surface.
1. Attach the monitor base.
Please be careful to prevent damage to the monitor. Placing the screen surface on an object like a stapler or a
mouse will crack the glass or damage the LCD substrate voiding your warranty. Sliding or scraping the monitor
around on your desk will scratch or damage the monitor surround and controls.
Protect the monitor and screen by clearing a flat open
area on your desk and placing a soft item like the
monitor packaging bag on the desk for padding.
Gently lay the screen face down on a flat clean padded
surface.
Attach the monitor stand to the monitor base as
illustrated.
Tighten the thumbscrew on the bottom of the monitor
base as illustrated.
2
1

18 How to assemble your monitor hardware
Orient and align the stand arm with the monitor ( ),
push them together until they click and lock into place
().
Gently attempt to pull them back apart to check that
they have properly engaged.
Carefully lift the monitor, turn it over and place it
upright on its stand on a flat even surface.
You might want to adjust the monitor stand height. See
Adjusting the monitor height on page 23 for more
information.
Your monitor is an edge-to-edge monitor and should be
handled with care. Avoid finger pressure on the screen
surface. Adjust the screen angle by placing your hands on the
top and on the bottom of the monitor as illustrated.
You should position the monitor and angle the screen to
minimize unwanted reflections from other light sources.
1
2
1
2

19How to assemble your monitor hardware
2. Connect the PC video cable
The video cables included in your package and the socket illustrations on the right may vary depending on the
product supplied for your region.
• Connect the plug of the HDMI cable to the HDMI port on the monitor. Connect the other end of
the cable to the HDMI port of a digital output device.
• Connect the plug of the DP cable to the monitor video socket. Connect the other end of the
cable to the computer video socket.
• Connect the plug of the supplied USB-C™ cable to the USB-C™ port on the monitor. Connect
the other end of the cable to the USB-C™ port of a laptop. It allows signal, audio, and data
transmission from the laptop to the monitor.
Tighten all finger screws to prevent the plugs from accidently falling out during use.
3. Connect the headphone.
You may connect headphones to the headphone jack
found on the rear of the monitor.
or or

20 How to assemble your monitor hardware
4. Connect the power cable to the monitor.
Pass the cable through the cable management hole on
the stand arm first.
Plug one end of the power cord into the socket labelled
on the rear of the monitor. Do not connect the
other end to a power outlet just yet.
5. Connect-to and turn-on the power.
Plug the other end of the power cord into a power
outlet and turn it on.
Picture may differ from product supplied for your region.
Turn on the monitor by pressing the power button on
the monitor.
Turn on the computer too, and select an input source
by the OSD control keys. The displayed input icons vary
depending on the available video inputs of the purchased
model.
To extend the service life of the product, we recommend
that you use your computer's power management function.