BenQ Gl2023a User Manual

							  31   How to adjust your monitor
Color 
FormatDetermines the color space 
(RGB or YUV) based on the 
following detected video 
signal:
• D-Sub (VGA) from PC: The 
default Color Format is 
RGB.
• D-Sub (Component) from a 
video device: The default 
Color Format is YUV.
You might need to manually set 
the Color Format if colors 
shown on the monitor screen 
do not display properly.
• DVI (for models with DVI 
inputs): Color Format is 
automatically set to RGB.Press the 
ENTER key to 
select this option. Press the 
 or   keys to change 
the settings.• RGB
• YUV
ItemFunctionOperationRange
 
						

							32  How to adjust your monitor  
System menu
Available menu options may vary depending on the input sources, functions and settings. Menu 
options that are not available will become grayed out.
1.  Press the 
MENU key to display the main 
menu.
2.  Press the   or   keys to select 
SYSTEM and then press the ENTER 
key to enter the menu.
3.  Press the   or   keys to move the 
highlight to a menu item and then 
press the 
ENTER key to select that 
item.
4.  Press the   or   keys to make 
adjustments or selections.
5.  To return to the previous menu, press 
the 
MENU button.
ItemFunctionOperationRange
Input Use this to change the input 
to that appropriate to your 
video cable connection type.
Analog-only models do not 
have the Input function.
Press the   or   keys 
to change the settings. • DVI
• D-sub (VGA)
OSD Settings - Press ENTER to enter the OSD Settings menu.
ENTERMENUExitSelect Move
SYSTEMMODE:Standard
Input
OSD Settings
DDC/CI
Auto Power off
Information
Reset AllD-sub
 
						

							  33   How to adjust your monitor
Language Sets the OSD menu language.
Press the   or   keys 
to change the settings. 
The language options 
displayed on your OSD 
may differ from those 
shown on the right, 
depending on the product 
supplied in your region.
• English
• French
• German
• Italian
• Spanish
• Polish
• Japanese
• Czech
• Traditional 
Chinese
• Hungarian
• Simplified 
Chinese
• Serbo-Croatian
• Romanian
• Dutch
• Russian
• Swedish
• Portuguese
H. Position Adjusts the horizontal 
position of the OSD menu. Press the   or   keys 
to change the settings. 0 to 100
V. Position Adjusts the vertical position 
of the OSD menu.0 to 100
Display  Time Adjusts the display time of the 
OSD menu.• 5 Sec.
• 10 Sec.
• 15 Sec.
• 20 Sec.
• 25 Sec.
• 30 Sec.
ItemFunctionOperationRange
 
						

							34  How to adjust your monitor  
OSD Lock Prevents all the monitor 
settings from being 
accidentally changed. When 
this function is activated, the 
OSD controls and hotkey 
operations will be disabled.Press the   or   keys 
to change the settings. 
To unlock the OSD 
controls when the OSD is 
preset to be locked, press 
and hold the 
MENU key 
for 15 seconds to enter 
the 
OSD Lock option and 
make changes. 
Alternatively, you may use 
the  or  keys to select 
NO in the OSD Lock 
submenu from the 
OSD 
Settings
 menu, and all 
OSD controls will be 
accessible.
• YES
• NO
Press 
MENU to leave the OSD Settings menu.
DDC/CI* Allows the monitor settings 
to be set through the 
software on the PC.Press the 
ENTER key to 
select this option. Press 
the  or  keys to 
change the settings.• ON
• OFF
Auto Power 
offSets the time to power off the 
monitor automatically in 
power saving mode.Press the 
ENTER key to 
select this option. Press 
the  or  keys to 
change the settings.• OFF
• 10min.
• 20min.
• 30min.
Information Displays the current monitor 
property settings.• Input
• Current 
Resolution
• Optimum 
Resolution 
(best with the 
monitor)
• Model Name
Reset All Resets all mode, color and 
geometry settings to the 
factory default values.Press the   or   keys 
to change the settings. • YES
• NO
ItemFunctionOperationRange
*DDC/CI, short for Display Data Channel/Command Interface, which was developed by Video Electronics 
Standards Association (VESA). DDC/CI capability allows monitor controls to be sent via the software for remote 
diagnostics.
 
						

							  35   Troubleshooting
Troubleshooting
Frequently asked questions (FAQ)
The image is blurred:
Read the instructions on the link Adjusting the Screen Resolution on the CD, and then select 
the correct resolution, refresh rate and make adjustments based on these instructions.
How do you use a VGA extension cable?
Remove the extension cable for the test. Is the image now in focus? If not, optimize the image 
by working through the instructions in the Adjusting the refresh rate section on the link 
Adjusting the Screen Resolution. It is normal for blurring to occur due to conduction losses 
in extension cables. You can minimize these losses by using an extension cable with better 
conduction quality or with a built-in booster.
Does the blurring only occur at resolutions lower than the native (maximum) resolution?
Read the instructions on the link Adjusting the Screen Resolution on the CD. Select the 
native resolution.
Pixel errors can be seen:
One of several pixels is permanently black, one or more pixels are permanently white, one or 
more pixels are permanently red, green, blue or another color.
• Clean the LCD screen.
• Cycle power on-off.
These are pixels that are permanently on or off and is a natural defect that occurs in LCD 
technology.
The image has a faulty coloration:
It has a yellow, blue or pink appearance.
Select 
MENU > PICTURE > Color > Reset Color, and then choose “YES” in the “Caution” 
message box to reset the color settings to the factory defaults. 
If the image is still not correct and the OSD also has faulty coloration, this means one of the 
three primary colors is missing in the signal input. Now check the signal cable connectors. If 
any pin is bent or broken off, please contact your dealer to get necessary support.
No image can be seen:
Is the prompt on the display illuminated in green?
If the LED is illuminated in green and there is a message “
Out of Range” on the screen, this 
means you are using a display mode that this monitor does not support, please change the 
setting to one of the supported mode. Please read the “Preset display modes” section from 
the link Adjusting the Screen Resolution. 
 
						

							36 Troubleshooting  
Need more help?
If your problems remain after checking this manual, please contact your place of purchase or 
e-mail us at: [email protected].
Faint shadow from the static image displayed is visible on the screen:
• Activate the power management function to let your computer and monitor go into a low 
power sleep mode when not actively in use.
• Use a screensaver to prevent the occurrence of image retention.
Is the prompt on the display illuminated in orange?
If the LED is illuminated in orange, the power management mode is active. Press any button on 
the computer keyboard or move the mouse. If that does not help, check the signal cable 
connectors. If any pin is bent or broken off, please contact your dealer to get necessary 
support.
Is the prompt on the display not illuminated at all?
Check the power supply mains socket, the external power supply and the mains switch.
The image is distorted, flashes or flickers:
Read the instructions on the link Adjusting the Screen Resolution on the CD, and then select 
the correct resolution, refresh rate and make adjustments based on these instructions.
You are running the monitor at its native resolution, but the image is still distorted.
Images from different input sources may appear distorted or stretched on the monitor running 
at its native resolution. To have the optimal display performance of each type of input sources, 
you can use the Display Mode function to set a proper aspect ratio for the input sources. 
See Display Mode on page 30
 for details.
The image is displaced in one direction:
Read the instructions on the link Adjusting the Screen Resolution on the CD, and then select 
the correct resolution, refresh rate and make adjustments based on these instructions.
The OSD controls are inaccessible:
• To unlock the OSD controls when the OSD is preset to be locked, press and hold the 
“MENU” key for 15 seconds to enter the “OSD Lock” option and make changes. 
• Alternatively, you may use the   or   keys to select “NO” in the “OSD Lock” submenu 
from the “OSD Settings” menu (under 
SYSTEM), and all OSD controls will be accessible.