Table of Contents
AOC CQ27G3SU/BK User Manual
Displayed below is the user manual for CQ27G3SU/BK by AOC which is a product in the Computer Monitors category. This manual has pages.
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1
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2021 AOC.All Rights Reserved
©
LCD Monitor
User Manual
CQ27G3SU
CQ27G3SU/BK
i
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 ............................................................................................................................................................ 13
Luminance ................................................................................................................................................... 14
Color Setup .................................................................................................................................................. 15
Picture Boost ............................................................................................................................................... 16
OSD Setup ................................................................................................................................................... 17
Game Setting ............................................................................................................................................... 18
Extra ............................................................................................................................................................ 19
Exit ............................................................................................................................................................... 20
LED Indicator .......................................................................................................................................................... 20
Troubleshoot ....................................................................................................................................................................... 21
Specication ....................................................................................................................................................................... 22
General Specication .............................................................................................................................................. 22
Preset Display Modes ............................................................................................................................................. 23
Pin Assignments ...................................................................................................................................................... 24
Plug and Play .......................................................................................................................................................... 25
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 specic 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.
The monitor is equipped with a three-pronged grounded plug, a plug with a third (grounding) pin. This plug will t
only into a grounded power outlet as a safety feature. If your outlet does not accommodate the three-wire plug, have an
electrician install the correct outlet, or use an adapter to ground the appliance safely. Do not defeat the safety purpose of
the grounded plug.
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 congured
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
Installed with stand
12 inches
30cm
4 inches
10cm
4 inches
10cm
4 inches
10cm
Leave at lease this
space around the set
4
Cleaning
Clean the cabinet regularly with cloth. You can use soft-detergent to wipe out the stain, instead of strong-detergent
which will cauterize the product cabinet.
When cleaning, make sure no detergent is leaked into the product. The cleaning cloth should not be too rough as it
will scratch the screen surface.
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.
6
Setup
Contents in Box
*
*
**
CD Manual
Power Cable DP Cable HDMI Cable
Warranty Card Stand Base
*
USB Cable Audio Cable
*
Not all signal cables will be provided for all countries and regions. Please check with the local dealer or AOC branch
ofce for conrmation.
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:
NOTE:
Do not touch the LCD screen when you change the angle. It may cause damage or break the LCD screen.
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 and Computer:
7
18
259
4
36
10
1. Power
2. DP
3. HDMI-1
4. HDMI-2
5. USB-PC(USB upstream)
6. USB3.2 Gen1
7. USB3.2 Gen1+charging
8. Earphone
9. USB3.2 Gen1
10. USB3.2 Gen1
Connect to PC
1. Connect the power cord to the back of the display rmly.
2. Turn off your computer and unplug its power cable.
3. Connect the display signal cable to the video connector on the back of 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 off 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.
Noted: VESA mounting screw holes are not available for all models, please check with the dealer or ofcial department of
AOC.
-5°
0° 90°
* Display design may differ 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
• 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)
12
Adjusting
Hotkeys
1 2 3 4 5
1 Source/Exit
2 Game Mode/<
3 Dial Point/>
4 Menu/Enter
5 Power
Power
Press the Power button to turn on the monitor.
Menu/Enter
When there is no OSD, Press to display the OSD or conrm the selection. Press about 2 second to turn off the monitor.
Game Mode/<
When there is no OSD, press ”<” key to open game mode function, then press ”<” or “>” key to select game mode (FPS,
RTS, Racing, Gamer 1, Gamer 2 or Gamer 3) basing on the different game types.
Dial Point/>
When there is no OSD, press Dial Point button to show / hide Dial Point.
Source/Exit
When the OSD is closed, press Source/Exit button will be Source hot key function.
When the OSD is closed, press Source/Exit button continuously about 2 second to do auto congure (Only for the models
with D-Sub).
13
OSD Setting
Basic and simple instruction on the control keys.
Luminance Color Setup Picture Boost OSD Setup Game Setting ExitExtra
Contrast 50
Brightness 80
Eco mode Standard
Gamma Gamma 1
DCR Off
HDR Mode Off
1). Press the MENU-button to activate the OSD window.
2). Press < or > to navigate through the functions. Once the desired function is highlighted, press the MENU-button to
activate it, press < or > to navigate through the sub-menu functions. Once the desired function is highlighted, press
MENU-button to activate it.
3). Press < or > to change the settings of the selected function. Press AUTO–button 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 off 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 off
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). DCR, Color Boost and Picture Boost, for these states that only one state can exist
14
Luminance
Luminance Color Setup Picture Boost OSD Setup Game Setting ExitExtra
Contrast 50
Brightness 80
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
Off Disable dynamic contrast ratio
On Enable dynamic contrast ratio
HDR
Off / DisplayHDR / HDR
Picture / HDR Movie /
HDR Game
Set the HDR prole according to your usage
requirements.
Note:
When HDR content is detected, the HDR option
will be displayed for adjustment.
HDR Mode Off / HDR Picture / HDR
Movie / HDR Game
Optimized for the color and contrast of the picture,
which simulates HDR effect.
Note:
When HDR content is not detected, the HDR mode
option will be displayed for adjustment.
Note:
When HDR is detected, the HDR option is displayed for adjustment; when HDR is not detected, the HDR Mode option is
displayed for adjustment.
15
Color Setup
Picture Boost OSD Setup ExitExtra
Luminance
Red 50
Green 50
Blue 50DCB Demo Off
Color Temp. Warm
DCB Mode Off
Color Setup
Game Setting
Color Temp.
Warm Recall Warm Color Temperature from EEPROM.
Normal Recall Normal Color Temperature from EEPROM.
Cool Recall Cool Color Temperature from EEPROM.
sRGB Recall SRGB Color Temperature from EEPROM.
User
Red Red Gain from Digital-register
Green Green Gain Digital-register.
Blue Blue Gain from Digital-register
DCB Mode
Full Enhance on or off Disable or Enable Full Enhance Mode
Nature Skin on or off Disable or Enable Nature Skin Mode
Green Field on or off Disable or Enable Green Field Mode
Sky-blue on or off Disable or Enable Sky-blue Mode
Auto Detect on or off Disable or Enable AutoDetect Mode
OFF on or off Disable or Enable DCB Mode
DCB Demo on or off Disable or Enable Demo
Red 0-100 Red gain from Digital-register.
Green 0-100 Green gain from Digital-register.
Blue 0-100 Blue gain from Digital-register.
Note:
When the “HDR Mode” under “Brightness” is set to a non-off state, all items under “Color Settings” cannot be adjusted.
16
Picture Boost
OSD Setup ExitExtra
Luminance
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 off 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:
When the "HDR Mode" under "Brightness" is set to a non-off state, all items under "Window Brightness" cannot be
adjusted.
17
OSD Setup
ExitExtra
Luminance Color Setup
H. Position 50
V. Position 0
Transparence 25
50
Language English
Timeout 10
DP Capability 1.2/1.4 Volume
Break Reminder Off
OSD Setup Picture Boost
Game Setting
Language Select the OSD language
Timeout 5-120 Adjust the OSD Timeout
DP Capability 1.1/1.2/1.4 Please be noted that only DP1.2/1.4 support Adaptive-
Sync function
H. Position 0-100 Adjust the horizontal position of OSD
V. Position 0-100 Adjust the vertical position of OSD
Volume 0-100 Volume Adjustment.
Transparence 0-100 Adjust the transparence of OSD
Break Reminder on or off Break reminder if the user continuously work for more
than 1hrs
Note:
If the DP video content supports DP1.2/DP1.4, please select DP1.2/DP1.4 for DP Capability; otherwise, please select
DP1.1
18
Game Setting
Picture Boost OSD SetupExitExtra
Luminance
LowBlue Mode
Overdrive
Shadow Control
Game Mode Off
Low Input Lag Off Off
Off
Color Setup
Game Setting
50
Game Color 10
Frame Counter Off
Adaptive-Sync Off
MBR 0
Game Mode
FPS For playing FPS (rst Person Shooters) games.
Improves dark theme black level details.
RTS For playing RTS (Real Time Strategy). Improves the
image quality.
Racing For playing Racing games, Provides fastest response
time and high color saturation.
Gamer 1 User’s preference settings saved as Gamer 1.
Gamer 2 User’s preference settings saved as Gamer 2.
Gamer 3 User’s preference settings saved as Gamer 3.
off No optimization by Smart image game
Shadow Control 0-100
Shadow Control Default is 50, then end-user can adjust
from 50 to 100 or 0 to increase contrast for clear picture.
1. If picture is too dark to be saw the detail clearly,
adjusting from 50 to100 for clear picture.
2. If picture is too white to be saw the detail clearly,
adjusting from 50 to0 for clear picture
Low Input Lag On/Off Turn off frame buffer to decrease input lag
Game Color 0-20 Game Color will provide 0-20 level for adjusting
saturation to get better picture.
LowBlue Mode
Reading / Ofce
/ Internet /
Multimedia / Off
Decrease blue light wave by controlling color
temperature.
Overdrive
Weak
Adjust the response time.
Medium
Strong
Boost
Off
Adaptive-Sync On/Off Adjust the Adaptive-Sync.
Frame Counter
Off / Right-up /
Right-Down / Left-
Down / Left-Up
Display V frequency on the corner selected
MBR 0 ~ 20 Adjust the Motion Blur Reduction.
Note:
The function MBR and Overdrive Boost are available only when Adaptive-Sync is off and the vertical frequency is up to
75 Hz.
19
Extra
Picture Boost OSD SetupExit
Luminance Color Setup
Off Timer 00
Input Select Auto
Reset No
Image Ratio Wide
DDC/CI Yes Resolution : 1920(H)X1080(V)
H. Frequency : 67KHz
V. Frequency : 60Hz
Extra
Game Setting
Input Select Select Input Signal Source
Off timer 0-24hrs Select DC off time
Image Ratio
Wide
Select image ratio for display.
4:3
1:1
17” (4:3)
19” (4:3)
19” (5:4)
19”W (16:10)
21.5”W (16:9)
22”W (16:10)
23”W (16:9)
23.6”W (16:9)
24”W (16:9)
DDC/CI yes or no Turn ON/OFF DDC/CI Support
Reset
yes or no Reset the menu to default.
(ENERGY STAR® available for selective
models.)
ENERGY STAR® or no
20
Exit
Picture Boost OSD Setup
Luminance Color Setup
Exit
Extra
Game Setting
Exit Exit the main OSD
LED Indicator
Status LED Color
Full Power Mode White
Active-off Mode Orange
21
Troubleshoot
Problem & Question Possible Solutions
Power LED Is Not ON Make sure the power button is ON and the Power Cord is properly
connected to a grounded power outlet and to the monitor.
No images on the screen
Is the power cord connected properly?
Check the power cord connection and power supply.
Is the cable connected correctly?
(Connected using the VGA cable)
Check the VGA cable connection.
(Connected using the HDMI cable)
Check the HDMI cable connection.
(Connected using the DP cable)
Check the DP cable connection.
* VGA/HDMI/DP input is not available on every model.
If the power is on, reboot the computer to see the initial screen (the login
screen), which can be seen.
If the initial screen (the login screen) appears, boot the computer in the
applicable mode (the safe mode for Windows 7/8/10) and then change the
frequency of the video card.
(Refer to the Setting the Optimal Resolution)
If the initial screen (the login screen) does not appear, contact the Service
Center or your dealer.
Can you see “Input Not Supported” on the screen?
You can see this message when the signal from the video card exceeds
the maximum resolution and frequency that the monitor can handle
properly.
Adjust the maximum resolution and frequency that the monitor can handle
properly.
Make sure the AOC Monitor Drivers are installed.
Picture Is Fuzzy & Has
Ghosting Shadowing Problem
Adjust the Contrast and Brightness Controls.
Press to auto adjust.
Make sure you are not using an extension cable or switch box. We
recommend plugging the monitor directly to the video card output connector
on the back.
Picture Bounces, Flickers Or
Wave Pattern Appears In The
Picture
Move electrical devices that may cause electrical interference as far away
from the monitor as possible.
Use the maximum refresh rate your monitor is capable of at the resolution
you are using.
Monitor Is Stuck In Active Off-
Mode”
The Computer Power Switch should be in the ON position.
The Computer Video Card should be snugly tted in its slot.
Make sure the monitor’s video cable is properly connected to the computer.
Inspect the monitor’s video cable and make sure no pin is bent.
Make sure your computer is operational by hitting the CAPS LOCK key on
the keyboard while observing the CAPS LOCK LED. The LED should either
turn ON or OFF after hitting the CAPS LOCK key.
Missing one of the primary
colors (RED, GREEN, or
BLUE)
Inspect the monitor’s video cable and make sure that no pin is damaged.
Make sure the monitor’s video cable is properly connected to the computer.
Screen image is not centered
or sized properly Adjust H-Position and V-Position or press hot-key (AUTO).
Picture has color defects
(white does not look white) Adjust RGB color or select desired color temperature.
Horizontal or vertical
disturbances on the screen
Use Windows 7/8/10 shut-down mode to adjust CLOCK and FOCUS.
Press to auto-adjust.
22
Specification
General Specification
Panel
Model name CQ27G3SU
CQ27G3SU/BK
Driving system TFT Color LCD
Viewable Image Size 68.5 cm diagonal
Pixel pitch 0.2331mm(H) x 0.2331mm(V)
Display Color 16.7M Colors
Others
Horizontal scan range 30k-230kHz (HDMI)
30k-250kHz (DP)
Horizontal scan Size(Maximum) 596.736mm
Vertical scan range 48-144Hz (HDMI)
48-165Hz (DP)
Vertical Scan Size(Maximum) 335.664mm
Optimal preset resolution 2560x1440@60Hz
Max resolution 2560x1440@144Hz (HDMI)
2560x1440@165Hz (DP)
Plug & Play VESA DDC2B/CI
Power Source 100-240V~, 50/60Hz, 1.5A
Power Consumption
Typical(Default brightness and contrast) 46W
Max. (brightness = 100, contrast =100) ≤88W
Standby mode ≤0.3W
Physical
Characteristics
Connector Type HDMI/DP/Earphone out/USB
Signal Cable Type Detachable
Environmental
Temperature Operating 0°~ 40°
Non-Operating -25°~ 55°
Humidity Operating 10% ~ 85% (non-condensing)
Non-Operating 5% ~ 93% (non-condensing)
Altitude Operating 0~ 5000 m (0~ 16404ft )
Non-Operating 0~ 12192m (0~ 40000ft )
CQ27G3SU/BK
23
Preset Display Modes
STANDARD RESOLUTION HORIZONTAL
FREQUENCY(kHz)
VERTICAL
FREQUENCY(Hz)
VGA
640x480@60Hz 31.469 59.94
640x480@72Hz 37.861 72.809
640x480@75Hz 37.5 75
640x480@100Hz 50.313 99.826
640x480@120Hz 60.938 119.72
SVGA
800x600@56Hz 35.156 56.25
800x600@60Hz 37.879 60.317
800x600@72Hz 48.077 72.188
800x600@75Hz 46.875 75
800x600@100Hz 62.76 99.778
800x600@120Hz 76.302 119.972
XGA
1024x768@60Hz 48.363 60.004
1024x768@70Hz 56.476 70.069
1024x768@75Hz 60.023 75.029
1024x768@100Hz 80.448 99.811
1024x768@120Hz 97.551 119.989
SXGA
1280x1024@60Hz 63.981 60.02
1280x1024@75Hz 79.976 75.025
WXGA+
1440x900@60Hz 55.935 59.887
1440x900@60Hz 55.469 59.901
WSXGA
1680x1050@60Hz 65.29 59.954
1680x1050@60Hz 64.674 59.883
FHD
1920x1080@60Hz 67.5 60
1920x1080@120Hz 139.1 119.93
QHD
2560x1440@60Hz 88.787 59.951
2560x1440@120Hz 182.997 119.998
2560x1440@144Hz 222.056 143.912
2560x1440@165Hz(DP) 242.55 165
IBM MODES
DOS 640x350@70Hz 31.469 70.087
DOS 720x400@70Hz 31.469 70.087
MAC MODES
VGA 640x480@67Hz 35 66.667
SVGA 832x624@75Hz 49.725 74.551
XGA 1024x768@75Hz 60.241 74.927
24
Pin Assignments
19-Pin Color Display Signal Cable
Pin No. Signal Name Pin No. Signal Name Pin No. Signal Name
1. TMDS Data 2+ 9. TMDS Data 0- 17. DDC/CEC Ground
2. TMDS Data 2 Shield 10. TMDS Clock + 18. +5V Power
3. TMDS Data 2- 11. TMDS Clock Shield 19. Hot Plug Detect
4. TMDS Data 1+ 12. TMDS Clock-
5. TMDS Data 1Shield 13. CEC
6. TMDS Data 1- 14. Reserved (N.C. on device)
7. TMDS Data 0+ 15. SCL
8. TMDS Data 0 Shield 16. SDA
20-Pin Color Display Signal Cable
Pin No. Signal Name Pin No. Signal Name
1 ML_Lane 3 (n) 11 GND
2 GND 12 ML_Lane 0 (p)
3 ML_Lane 3 (p) 13 CONFIG1
4 ML_Lane 2 (n) 14 CONFIG2
5 GND 15 AUX_CH(p)
6 ML_Lane 2 (p) 16 GND
7 ML_Lane 1 (n) 17 AUX_CH(n)
8 GND 18 Hot Plug Detect
9 ML_Lane 1 (p) 19 Return DP_PWR
10 ML_Lane 0 (n) 20 DP_PWR
25
Plug and Play
Plug & Play DDC2B Feature
This monitor is equipped with VESA DDC2B capabilities according to the VESA DDC STANDARD. It allows the monitor
to inform the host system of its identity and, depending on the level of DDC used, communicate additional information
about its display capabilities.
The DDC2B is a bi-directional data channel based on the I2C protocol. The host can request EDID information over the
DDC2B channel.