AOC 24B3HMA2 User manual

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www.aoc.com
©2023AOC. All Rights Reserved.
®
LCD Monitor
User Manual
24B3HMA2/27B3HMA2

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Safety............................................................................................................................................................................................1
National Conventions .....................................................................................................................................................1
Power................................................................................................................................................................................2
Installation .......................................................................................................................................................................3
Cleaning............................................................................................................................................................................4
Other.................................................................................................................................................................................5
Setup ............................................................................................................................................................................................6
Contents in Box...............................................................................................................................................................6
Setup Stand & Base ........................................................................................................................................................7
Adjusting Viewing Angle .................................................................................................................................................8
Connecting the Monitor .................................................................................................................................................9
Wall Mounting .............................................................................................................................................................. 10
Adaptive-Sync function ............................................................................................................................................... 11
Adjusting ................................................................................................................................................................................... 12
Hotkeys.......................................................................................................................................................................... 12
OSD Setting................................................................................................................................................................... 14
Luminance......................................................................................................................................................... 15
Image Setup...................................................................................................................................................... 16
Color Setup ....................................................................................................................................................... 17
Picture Boost..................................................................................................................................................... 18
OSD Setup ......................................................................................................................................................... 19
Game Setting .................................................................................................................................................... 20
Extra................................................................................................................................................................... 21
Exit...................................................................................................................................................................... 22
LED Indicator ................................................................................................................................................................ 23
Troubleshoot ............................................................................................................................................................................ 24
Specication ............................................................................................................................................................................. 25
General Specication................................................................................................................................................... 25
Preset Display Modes .................................................................................................................................................. 27
Pin Assignments........................................................................................................................................................... 28
Plug and Play ................................................................................................................................................................ 29

1
Safety
National Conventions
The following subsections describe notational conventions used in this document.
Notes, Cautions, and Warnings
Throughout this guide, blocks of text may be accompanied by an icon and printed in bold type or in italic type.
These blocks are notes, cautions, and warnings, and they are used as follows:
NOTE: A NOTE indicates important information that helps you make better use of your computer system.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the
problem.
WARNING: A WARNING indicates the potential for bodily harm and tells you how to avoid the problem. Some
warnings may appear in alternate formats and may be unaccompanied by an icon. In such cases, the specic
presentation of the warning is mandated by regulatory authority.

2
Power
The monitor should be operated only from the type of power source indicated on the label. If you are not sure
of the type of power supplied to your home, consult your dealer or local power company.
Unplug the unit during a lightning storm or when it will not be used for long periods of time. This will protect
the monitor from damage due to power surges.
Do not overload power strips and extension cords. Overloading can result in re or electric shock.
To ensure satisfactory operation, use the monitor only with UL listed computers which have appropriate
congured receptacles marked between 100-240V AC, Min. 5A.
The wall socket shall be installed near the equipment and shall be easily accessible.

3
Installation
Do not place the monitor on an unstable cart, stand, tripod, bracket, or table. If the monitor falls, it can injure
a person and cause serious damage to this product. Use only a cart, stand, tripod, bracket, or table recommended
by the manufacturer or sold with this product. Follow the manufacturer’s instructions when installing the product
and use mounting accessories recommended by the manufacturer. A product and cart combination should be
moved with care.
Never push any object into the slot on the monitor cabinet. It could damage circuit parts causing a re or
electric shock. Never spill liquids on the monitor.
Do not place the front of the product on the oor.
If you mount the monitor on a wall or shelf, use a mounting kit approved by the manufacturer and follow the
kit instructions.
Leave some space around the monitor as shown below. Otherwise, air-circulation may be inadequate hence
overheating may cause a re or damage to the monitor.
To avoid potential damage, for example the panel peeling from the bezel, ensure that the monitor does not
tilt
downward by more than -5 degrees. If the -5 degree downward tilt angle maximum is exceeded, the monitor
damage will
not be covered under warranty.
See below the recommended ventilation areas around the monitor when the monitor is installed on the wall or on
the stand:
Installed with stand
12 inches
30cm
4 inches
10cm
4 inches
10cm
4 inches
10cm
Leave at least this much
space around the set

4
Cleaning
Clean the cabinet regularly with a water-dampened, soft cloth.
When cleaning use a soft cotton or microber cloth. The cloth should be damp and almost dry, do not allow
liquid into the case.
Please disconnect the power cord before cleaning the product.

5
Other
If the product is emitting a strange smell, sound or smoke, disconnect the power plug IMMEDIATELY and
contact a Service Center.
Make sure that the ventilating openings are not blocked by a table or curtain.
Do not engage the LCD monitor in severe vibration or high impact conditions during operation.
Do not knock or drop the monitor during operation or transportation.
The power cords shall be safety approved. For Germany, it shall be H03VV-F, 3G, 0.75 mm2, or better. For
other countries, the suitable types shall be used accordingly.
IExcessive sound pressure from earphones and headphones can cause hearing loss. Adjustment of the
equalizer to maximum increases the earphones and headphones output voltage and therefore the sound pressure
level.

6
Setup
Contents in Box
*
Warranty card
Monitor
BaseStand
*
Power Cable
*
Quick Start
HDMI Cable VGA Cable
Not all signal cables will be provided for all countries and regions. Please check with the local dealer or AOC
branch oce for conrmation.

7
Setup Stand & Base
Please setup or remove the base following the steps as below.
Setup:
Remove:

8
Adjusting Viewing Angle
For optimal viewing it is recommended to look at the full face of the monitor, then adjust the monitor’s angle to
your own preference.
Hold the stand so you will not topple the monitor when you change the monitor’s angle.
You are able to adjust the monitor as below:
-5
°
23
°
NOTE:
Do not touch the LCD screen when you change the angle. Touching the LCD screen may cause damage.
WARNING:
1. To avoid potential screen damage, such as panel peeling, ensure that the monitor does not tilt downward by
more than
-5 degrees.
2. Do not press the screen while adjusting the angle of the monitor. Grasp only the bezel.

9
Connecting the Monitor
Cable Connections In Back of Monitor.
13 4 2
1. HDMI
2. Analog (D-Sub 15-Pin VGA cable)
3. Earphone
4. Power
Connect to PC
1. Connect the power cord to the back of the display firmly.
2. Turn off your computer and unplug its power cable.
3. Connect the display signal cable to the video connector on your computer.
4. Plug the power cord of your computer and your display into a nearby outlet.
5. Turn on your computer and display.
If your monitor displays an image, installation is complete. If it does not display an image, please refer
Troubleshooting.
To protect equipment, always turn o the PC and LCD monitor before connecting.

10
Wall Mounting
Preparing to Install An Optional Wall Mounting Arm.
This monitor can be attached to a wall mounting arm you purchase separately. Disconnect power before this
procedure. Follow these steps:
1. Remove the base.
2. Follow the manufacturer’s instructions to assemble the wall mounting arm.
3. Place the wall mounting arm onto the back of the monitor. Line up the holes of the arm with the holes in the
back of the monitor.
4. Reconnect the cables. Refer to the user’s manual that came with the optional wall mounting arm for instructions
on attaching it to the wall.
M4
100mm
100mm
Specication of wall hanger screws: M4*(10+X)mm, ( X=Thickness of Wall mount bracket )
M=4.0Max
Dk=8.0 H=2.0 L=10+X
D3.86-3.96
M4-P0.7
Noted: VESA mounting screw holes are not available for all models, please check with the dealer or ocial
department of AOC. Always contact manufacturer for wall-mount installation.
-5°
0° 90°
* Display design may dier from those illustrated.
WARNING:
1. To avoid potential screen damage, such as panel peeling, ensure that the monitor does not tilt downward by
more than -5 degrees.
2. Do not press the screen while adjusting the angle of the monitor. Grasp only the bezel.

11
Adaptive-Sync function
1. Adaptive-Sync function is working with DP/HDMI
2. Compatible Graphics Card: Recommend list is as the below, also could be checked by visiting www.AMD.com
Graphics Cards
• Radeon™ RX Vega series
• Radeon™ RX 500 series
• Radeon™ RX 400 series
• Radeon™ R9/R7 300 series （R9 370/X, R7 370/X, R7 265 except）
• Radeon™ Pro Duo (2016)
• Radeon™ R9 Nano series
• Radeon™ R9 Fury series
• Radeon™ R9/R7 200 series (R9 270/X, R9 280/X except)
Processors
• AMD Ryzen™ 7 2700U
• AMD Ryzen™ 5 2500U
• AMD Ryzen™ 5 2400G
• AMD Ryzen™ 3 2300U
• AMD Ryzen™ 3 2200G
• AMD PRO A12-9800
• AMD PRO A12-9800E
• AMD PRO A10-9700
• AMD PRO A10-9700E
• AMD PRO A8-9600
• AMD PRO A6-9500
• AMD PRO A6-9500E
• AMD PRO A12-8870
• AMD PRO A12-8870E
• AMD PRO A10-8770
• AMD PRO A10-8770E
• AMD PRO A10-8750B
• AMD PRO A8-8650B
• AMD PRO A6-8570
• AMD PRO A6-8570E
• AMD PRO A4-8350B
• AMD A10-7890K
• AMD A10-7870K
• AMD A10-7850K
• AMD A10-7800
• AMD A10-7700K
• AMD A8-7670K
• AMD A8-7650K
• AMD A8-7600
• AMD A6-7400K

12
Adjusting
Hotkeys
1 Source/Auto/Exit
2 Clear Vision/<
3Volume/Image ratio/>
4 Menu/Enter
5 Power
Menu/Enter
When there is no OSD, Press to display the OSD or conrm the selection.
Power
Press the Power button to turn on the monitor.
Volume/Image ratio
When there is no OSD, Press > Volume button to active volume adjustment bar, Press < or > to adjust volume.
When there is no OSD, Press > hotkey to active image ratio , Press < or > to adjust 4:3 or wide. (If the product
screen size is 4:3 or input signal resolution is wide format, the hot key is disable to adjust).
Source/Auto/Exit
When the OSD is closed, press Source/Auto/Exit button will be Source hot key function.
When the OSD is closed, press Source/Auto/Exit button continuously about 2 second to do auto congure (Only for
the models with D-Sub).

13
Clear Vision
1. When there is no OSD, Press the “ <” button to activate Clear Vision.
2. Use the “ > ” or “>” buttons to select between weak, medium, strong, or o settings. Default setting is always “o”.
3. Press and hold “ <” button for 5 seconds to activate the Clear Vision Demo, and a message of “Clear Vision
Demo: on” will be display on the screen for a duration of 5 seconds. Press Menu or Exit button, the message will
disappear. Press and hold “ <” button for 5 seconds again, Clear Vision Demo will be o.
Clear Vision function provides the best image viewing experience by converting low resolution and blurry images
into clear and vivid images.

14
OSD Setting
Basic and simple instruction on the control keys.
Luminance Image Setup Color Setup Picture Boost OSD Setup Game Setting ExitExtra
Contrast 50
Brightness 90
Eco mode Standard
Gamma Gamma 1
DCR Off
HDR Mode Off
1). Press the MENU-button to activate the OSD window.
2). Press Left or Right to navigate through the functions. Once the desired function is highlighted, press the
MENU-button to activate it, press Left or Right to navigate through the sub-menu functions. Once the
desired function is highlighted, press MENU-button to activate it.
3). Press Left or to change the settings of the selected function. Press to exit. If you want to adjust any
other function, repeat steps 2-3.
4). OSD Lock Function: To lock the OSD, press and hold the MENU-button while the monitor is o and then
press power button to turn the monitor on. To un-lock the OSD - press and hold the MENU-button while
the monitor is o and then press power button to turn the monitor on.
Notes:
1). If the product has only one signal input, the item of “Input Select” is disable to adjust.
2). ECO modes (except Standard mode), DCR, DCB mode and Picture Boost, for these four states that only one
state can exist.

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Luminance
Luminance Image Setup Color Setup Picture Boost OSD Setup Game Setting ExitExtra
Contrast 50
Brightness 90
Eco mode Standard
Gamma Gamma 1
DCR Off
HDR Mode Off
Contrast 0-100 Contrast from Digital-register.
Brightness 0-100 Backlight Adjustment.
Eco mode
Standard Standard Mode.
Text Text Mode.
Internet Internet Mode.
Game Game Mode.
Movie Movie Mode.
Sports Sports Mode.
Reading Reading Mode.
Gamma
Gamma1 Adjust to Gamma 1.
Gamma2 Adjust to Gamma 2.
Gamma3 Adjust to Gamma 3.
DCR
On Enable dynamic contrast ratio.
O Disable dynamic contrast ratio.
HDR Mode
O
Select HDR Mode.
HDR Picture
HDR Movie
HDR Game
Note:
When “HDR Mode” is set to “non-o”, the items “Contrast”, “ECO”, “Gamma” cannot be adjusted.
When “Color Gamut” under “Color Setup” is set to “sRGB”, the items “Contrast”, “ECO”, “Gamma”, “HDR Mode”
cannot be adjusted.

16
Image Setup
Color Setup Picture Boost OSD Setup ExitExtra
Image Setup
Clock 50
Phase 50
H. Position 50
V. Position 50
Sharpness 50
Luminance
Game Setting
Clock 0-100 Adjust picture Clock to reduce Vertical-Line noise.
Phase 0-100 Adjust Picture Phase to reduce Horizontal-Line noise
Sharpness 0-100 Adjust picture sharpness
H. Position 0-100 Adjust the horizontal position of the picture.
V. Position 0-100 Adjust the vertical position of the picture.

17
Color Setup
Picture Boost OSD Setup ExitExtra
Luminance
Color Setup Image Setup
Game Setting
Red 50
Green 50
Blue 50
LowBlue Mode Off
Color Temp. Warm
Color Gamut Panel native DCB Demo Off
DCB Mode Off
Color Temp.
Warm Recall Warm Color Temperature from EEPROM.
Normal Recall Normal Color Temperature from
EEPROM.
Cool Recall Cool Color Temperature from EEPROM.
User Restore Color Temperature from EEPROM.
Color Gamut Panel Native Standard color space panel.
sRGB Recall SRGB Color Temperature from EEPROM.
LowBlue Mode
Reading / Oce /
Internet / Multimedia /
O
Decrease blue light wave by controlling color
temperature.
Red 0-100 Red gain from Digital-register.
Green 0-100 Green gain from Digital-register.
Blue 0-100 Blue gain from Digital-register.
DCB Mode
Full Enhance Disable or Enable Full Enhance Mode
Nature Skin Disable or Enable Nature Skin Mode
Green Field Disable or Enable Green Field Mode
Sky-blue Disable or Enable Sky-blue Mode
AutoDetect Disable or Enable AutoDetect Mode
O Disable or Enable DCB Mode
DCB Demo On or O Disable or Enable Demo
Note:
When “HDR Mode” under “Luminance” is set to “non-o”, all items under “Color Setup” cannot be adjusted.
When “Color Gamut” is set to “sRGB”, all items under “Color Setup” cannot be adjusted.

18
Picture Boost
OSD Setup ExitExtra
Luminance Image Setup
Brightness 50
Contrast 50
H. Position 0
V. Position 0
Bright Frame off
Frame Size 14
Picture Boost Color Setup
Game Setting
Bright Frame on or o Disable or Enable Bright Frame
Frame Size 14-100 Adjust Frame Size
Brightness 0-100 Adjust Frame Brightness
Contrast 0-100 Adjust Frame Contrast
H. position 0-100 Adjust Frame horizontal Position
V. position 0-100 Adjust Frame vertical Position
Note:
Adjust the brightness, contrast, and position of the Bright Frame for better viewing experience.
When “HDR Mode” under “Luminance” is set to “non-o”, all items under “Picture Boost” cannot be adjusted.