AOC CU34V5C/BK User manual

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©
www.aoc.com
2022 AOC.All Rights Reserved ®
LCD Monitor
User Manual
CU34V5C/BK

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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...........................................................................................................................................................11
Adjusting ............................................................................................................................................................................. 14
Hotkeys ................................................................................................................................................................... 14
OSD Setting ............................................................................................................................................................ 15
Luminance ................................................................................................................................................... 16
Color Setup .................................................................................................................................................. 17
Picture Boost ............................................................................................................................................... 18
OSD Setup ................................................................................................................................................... 19
PIP Setting ................................................................................................................................................... 20
Game Setting ............................................................................................................................................... 21
Extra ............................................................................................................................................................ 22
Exit ............................................................................................................................................................... 23
LED Indicator .......................................................................................................................................................... 24
Troubleshoot ....................................................................................................................................................................... 25
Specification ....................................................................................................................................................................... 26
General Specification .............................................................................................................................................. 26
Preset Display Modes ............................................................................................................................................. 27
Pin Assignments ...................................................................................................................................................... 28
Plug and Play .......................................................................................................................................................... 29
AMD FreeSync function (Available for selective models) ....................................................................................... 12
Adaptive-Sync function (Available for selective models) ......................................................................................... 13

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 specific 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 fit
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 fire or electric shock.
To ensure satisfactory operation, use the monitor only with UL listed computers which have appropriate configured
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 fire or electric
shock. Never spill liquids on the monitor.
Do not place the front of the product on the floor.
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 fire 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 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 microfiber 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.
Excessive 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
*
HDMI Cable DP Cable
CD Manual Warranty Card Stand Base Screwdriver
Monitor
Power Cable
*
Not all signal cables will be provided for all countries and regions. Please check with the local dealer or AOC branch
office for confirmation.
*
USB C-C Cable USB C-C/A
Cable
*

7
Setup Stand & Base
Please setup or remove the base following the steps as below.
Setup:
4
Remove:
4
5

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°
130mm
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 and Computer:
21
4
6 7
3
5
1. HDMI
2. DP
3. USB-C
4. Earphone
5. USB3.2 Gen1+chargingx1
USB3.2 Gen1x1
6. USB3.2 Gen1x2
7. 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 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(Screw diameter is M4 and length is 10mm).
4
5
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 official
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.

13
AMD FreeSync function (Available for selective models)
1. AMD FreeSync function is working with DP/HDMI/USB C
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

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Adaptive-Sync function (Available for selective models)
1. Adaptive-Sync function is working with HDMI/DP/USB C
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
4
1
3
5
2
1 Source/Exit/Up
2 Eco/DCR/Down
3 Clear Vision/Left
4 Volume/Right
5 Power/ Menu/Enter
Menu/Enter
When there is no OSD, Press to display the OSD or confirm the selection. Press about 2 second to turn off the monitor.
Power
Press the Power button to turn on the monitor.
Volume/Right
When there is no OSD, Press Volume button to active volume adjustment bar, Press Left or Right to adjust volume.
Source/Exit
When the OSD is closed, press Source/Exit button will be Source hot key function.
Eco /DCR/Down
When there is no OSD, Press this button to enter Eco/DCR adjustment. Then press Left or Right button to choose
different Eco/DCR.

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Clear Vision
1. When there is no OSD, Press the “Left” button to activate Clear Vision.
2. Use the “Left” or “Right” buttons to select between weak, medium, strong, or off settings. Default setting is always “off”.
3. Press and hold “Left” 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 and hold “Left” button for 5 seconds again, Clear
Vision Demo will be off.
Clear Vision function provides the best image viewing experience by converting low resolution and blurry images into
clear and vivid images.
Clear Vision
Off
Adjust the Clear Vision
Weak
Medium
Strong
Clear Vision Demo On or Off Disable or Enable Demo

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OSD Setting
Basic and simple instruction on the control keys.
Luminance Color Setup Picture Boost OSD Setup ExitExtra
Contrast 50
Brightness 90
Eco mode Standard
Gamma Gamma 1
DCR Off
HDR Mode Off
Game Setting
PIP Setting
PIP
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 Right to change the settings of the selected function. Press Exit–button to exit. If you want to adjust
any other function, repeat steps 2-3.
4). OSD Lock/Unlock Function: To lock or unlock the OSD, press and hold the Down–button for 10s while OSD function
is not active.
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), Clear vision, DCR, DCB mode and Picture Boost, for these states that only one
state can exist.

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Luminance
Luminance Color Setup Picture Boost OSD Setup ExitExtra
Contrast 50
Brightness 90
Eco mode Standard
Gamma Gamma 1
DCR Off
HDR Mode Off
Game Setting
PIP Setting
PIP
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
Uniformity Uniformity 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 Mode Off / HDR Picture / HDR
Movie / HDR Game Disable or Enable HDR Mode
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.

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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
PIP Setting
PIP
LowBlue 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.
sRGB Recall SRGB Color Temperature from EEPROM.
User
Red Gain from Digital-register
Green Gain Digital-register.
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
Auto Detect Disable or Enable AutoDetect Mode
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.
LowBlue
Mode
Reading / Office
/ Internet /
Multimedia / Off
Decrease blue light wave by controlling color
temperature.

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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
PIP Setting
PIP
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:
Adjust the brightness, contrast, and position of the Bright Frame for better viewing experience.