BenQ Computer Monitor RL2455HM User Manual

RL2450H / RL2450HT  
RL2455HM  
User Manual  
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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.  
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Table of Contents  
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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  
RL2450H / RL2455HM  
RL2450HT  
Monitor Stand  
(for RL2450H / RL2455HM)  
Monitor Base  
(for RL2450H / RL2455HM)  
Monitor Base  
(for RL2450HT)  
Quick Start Guide  
6
Getting started  
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CD-ROM  
Power Cord  
(Picture may differ from product supplied  
for your region.)  
Video Cable: D-Sub  
Video Cable: DVI-D  
Video Cable: HDMI  
(Optional accessory, sold separately)  
Audio Cable  
(Optional accessory, sold separately)  
• Available accessories and the pictures shown here may differ from the actual contents and the product  
supplied for your region. 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.  
Always keep the product and accessories out of reach of small children.  
Getting started  
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Getting to know your monitor  
Front view  
1. Control buttons  
2. Power button  
1
2
Back view  
3. Input and output ports (vary by  
4. Kensington lock slot  
5. Release button  
6
6. Wall mount holes  
5
3
4
Above diagram may vary depending on the model.  
Picture may differ from the product supplied for your region.  
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Getting to know your monitor  
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Input and output ports  
Available input and output ports may vary depending on your purchased model. Check the  
Specification document on the provided CD for details.  
RL2455HM  
1. AC power input jack  
2. Audio Line In  
3. Headphone jack  
4. HDMI socket  
5. HDMI socket  
6. DVI-D socket  
7. D-Sub socket  
1
2 3  
4
5
6
7
RL2450H / RL2450HT  
1
3
5
6
7
Getting to know your monitor  
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How to assemble your monitor hardware (RL2450H /  
RL2455HM)  
• If your model came with a height adjustment stand (HAS), refer to Assembling your monitor with a height  
adjustment stand (RL2450HT) on page 16 for details on hardware installation.  
• 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 following illustrations are for your reference only. Available input and output jacks may vary depending on  
the purchased model.  
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 until it locks in place.  
Gently attempt to pull them back apart to check that  
they have properly engaged.  
Orient and align the stand arm with the monitor, then  
push them together until they click and lock into place.  
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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 should position the monitor and angle the screen to  
minimize unwanted reflections from other light sources.  
O
O
15  
~ ++15  
-5  
2. Connect the PC video cable  
Either  
Do not use both DVI-D cable and D-Sub cable on the same  
PC. The only case in which both cables can be used is if they  
are connected to two different PCs with appropriate video  
systems.  
To Connect the D-Sub Cable  
Connect the plug of the D-Sub cable (at the end  
without the ferrite filter) to the monitor video socket.  
Connect the other end of the cable (at the end with the  
ferrite filter) to the computer video socket.  
Tighten all finger screws to prevent the plugs from  
accidently falling out during use.  
How to assemble your monitor hardware (RL2450H / RL2455HM)  
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To Connect the DVI-D Cable  
Or  
Connect the plug of the DVI-D cable (at the end  
without the ferrite filter) to the monitor video socket.  
Connect the other end of the cable (at the end with the  
ferrite filter) to the computer video socket.  
Tighten all finger screws to prevent the plugs from  
accidently falling out during use.  
To Connect the HDMI Cable  
Or  
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.  
If there is more than one video transmission method  
available to you, you might want to take the picture quality  
of each video cable into consideration before making the  
connection.  
- Better quality: HDMI / DVI-D  
- Good quality: D-Sub  
The video cables included in your package and the socket  
illustrations on the right may vary depending on the product  
supplied for your region.  
3. Connect the audio cable (for models with  
speakers).  
Connect the audio cable between the socket on the  
rear of the monitor (Line In) and your computer audio  
outlet.  
You may connect headphones to the headphone jack  
found on the back side of the monitor.  
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4. Connect the power cable to the monitor.  
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 follow the instructions  
23 to install the monitor software.  
To extend the service life of the product, we recommend  
that you use your computer's power management function.  
How to assemble your monitor hardware (RL2450H / RL2455HM)  
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How to detach the stand base  
1. Prepare the monitor and area.  
Turn off the monitor and the power before unplugging  
the power cable. Turn off the computer before  
unplugging the monitor signal cable.  
Protect the monitor and screen by clearing a flat open  
area on your desk and placing a soft item like a towel on  
the desk for padding, before laying the screen face down  
on a flat clean padded surface.  
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.  
2. Push the locking clips upward to detach the  
monitor base from the monitor stand arm.  
1
While pushing the locking clips upward, detach the  
stand base from the stand arm.  
2
3. Remove the monitor stand.  
Insert a pointed object such as a screwdriver to the  
hole above the monitor stand arm, and then push  
the screwdriver against the release button inside  
the hole. Then pull the monitor stand backward  
away from the monitor.  
1
Release  
button  
2
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Using the monitor wall mounting kit  
The back of your LCD monitor has a VESA standard mount with 100mm pattern, allowing the  
installation of a wall mount bracket. Before starting to install a monitor wall mounting kit,  
please read the precautions carefully.  
Precautions  
• Install your monitor and monitor mounting kit on a wall with flat surface.  
• Ensure that the wall material is stable to support the weight of the monitor.  
Turn off the monitor and the power before disconnecting the cables from the LCD monitor.  
1. Remove the monitor stand.  
Lay the screen face down on a clean and  
well-padded surface.  
Detach the monitor base as instructed in How to  
1
Release  
button  
2
2. Follow the instruction manuals of the wall  
mount bracket you purchased to complete  
the installation.  
How to assemble your monitor hardware  
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Assembling your monitor with a height adjustment stand  
(RL2450HT)  
How to attach the monitor base  
• 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 following illustrations are for your reference only. Available input and output jacks may vary depending on  
the purchased model.  
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.  
While holding the monitor firmly against the desk, pull  
the monitor stand arm upwards clear of the monitor.  
Orient and align the stand base socket with the end of  
the stand arm, then push them together. Tighten the  
thumbscrew on the bottom of the monitor base as  
illustrated.  
2
3
1
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.  
16  
Assembling your monitor with a height adjustment stand (RL2450HT)  
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Extend the monitor to the maximum extended position.  
Then tilt the monitor. And rotate the monitor 90  
degrees counterclockwise as illustrated.  
-90  
You might want to adjust the monitor stand height. See  
information.  
You should position the monitor and angle the screen to  
minimize unwanted reflections from other light sources.  
O
O
-5  
5
~ +15  
+
1
5
Assembling your monitor with a height adjustment stand (RL2450HT)  
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How to detach the base  
To move the monitor properly, you should extend the monitor to its maximum  
height, then place one hand on the upper part of the monitor stand and the other  
hand on the lower part of the stand as illustrated.  
1. Prepare the monitor and area.  
Turn off the monitor and the power before unplugging  
the power cable. Turn off the computer before  
unplugging the monitor signal cable.  
Gently lift the display up and extend the stand to the  
maximum extended position.  
Protect the monitor and screen by clearing a flat open  
area on your desk and placing a soft item like a towel on  
the desk for padding, before laying the screen face down  
on a flat clean padded surface.  
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.  
2. Release the thumbscrew on the bottom of  
the monitor base and detach the monitor  
base as illustrated.  
1
2
18  
Assembling your monitor with a height adjustment stand (RL2450HT)  
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Adjusting the monitor height  
To adjust the monitor height, hold both the left and the  
right sides of the monitor to lower the monitor or lift it  
up to the desired height.  
• Avoid placing hands on the upper or lower part of the  
height-adjustable stand or at the bottom of the monitor, as  
ascending or descending monitor might cause personal  
injuries. Keep children out of reach of the monitor while  
performing this operation.  
• If the monitor has been rotated to portrait mode and height adjustment is desired, you  
should be noted that the wide screen will keep the monitor from being lowered to its  
minimum height.  
Assembling your monitor with a height adjustment stand (RL2450HT)  
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Rotating the monitor  
1. Pivot the display.  
Before rotating the monitor with a portrait viewing orientation, the display has to be rotated 90 degrees.  
Right-click the desktop and select Screen resolution from the popup menu. Select Portrait in  
Orientation, and apply the setting.  
Depending on the operation system on your PC, different procedures should be followed to adjust the screen  
orientation. Refer to the help document of your operation system for details.  
2. Fully extend the monitor and tilt it.  
Gently lift the display up and extend it to the maximum  
extended position. Then tilt the monitor.  
The monitor should be vertically extended to allow to rotate  
from landscape to portrait mode.  
3. Rotate the monitor 90 degrees clockwise as  
illustrated.  
90  
To avoid the edge of the LCD display hitting the monitor base  
surface while it is being rotated, do tilt and extend the  
monitor to the highest position before you start to rotate the  
display.  
You should also make sure there are no obstacles around the  
monitor and there is enough room for cables. You might need  
to route the cables again via the cable clip after the rotation.  
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4. Adjust the monitor to the desired viewing  
angle.  
Viewing angle adjustment  
You may position the screen to the desired angle with -5° to +15° monitor tilt, 90° (left and  
right total) monitor swivel, and 110 mm monitor height.  
O
O
-5  
5
~ +15  
O
+
1
O
5
-45  
5
~ +45  
+
4
5
110 mm  
Assembling your monitor with a height adjustment stand (RL2450HT)  
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Using the monitor wall mounting kit  
The back of your LCD monitor has a VESA standard mount with 100mm pattern, allowing the  
installation of a wall mount bracket. Before starting to install a monitor wall mounting kit,  
please read the precautions carefully.  
Precautions:  
• Install your monitor and monitor mounting kit on a wall with flat surface.  
• Ensure that the wall material is stable to support the weight of the monitor.  
Turn off the monitor and the power before disconnecting the cables from the LCD monitor.  
1. Remove the monitor stand.  
Lay the screen face down on a clean and well-padded  
surface.  
Use a a cross-pointed screwdriver to release the screws  
that fixing the monitor stand to the monitor.The use of a  
magnetic-head screwdriver is recommended to avoid of  
losing the screws.  
Then pull the monitor stand backward away from the  
monitor.  
In case you intend to use your monitor on the stand in the  
future, please keep the monitor base, monitor stand, and  
screws somewhere safe for future use.  
2. Follow the instruction manuals of the wall  
mount bracket you purchased to complete  
the installation.  
22  
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Getting the most from your BenQ monitor  
To gain the most benefit from your new BenQ LCD monitor, you should install the custom  
BenQ LCD Monitor driver software as provided on the BenQ LCD Monitor CD-ROM.  
The circumstances under which you connect and install your BenQ LCD Monitor will  
determine which process you need to follow to successfully install the BenQ LCD Monitor  
driver software. These circumstances relate to which version of Microsoft Windows you are  
using, and whether you are connecting the monitor and installing the software onto a new  
computer (without existing monitor driver software), or whether you are upgrading an existing  
installation (which already has existing monitor driver software) with a newer monitor.  
In either case however, the very next time you turn on your computer (after connecting the  
monitor to your computer), Windows will automatically recognize the new (or different)  
hardware, and will launch its Found New Hardware wizard.  
Follow the wizard instructions until it asks you to select a monitor model. At that point, click  
the Have Disk button, insert the BenQ LCD Monitor CD-ROM and select the appropriate  
monitor model. Further details and step-by-step instructions for either an automatic (new) or  
upgrade (existing) installation, see:  
• If you require a User Name and Password to login to your Windows computer, you must be logged on as an  
Administrator or as a member of the Administrators group in order to install the monitor driver software.  
Furthermore, if your computer is connected to a network which has security access requirements, network  
policy settings may prevent you from installing software on your computer.  
To check the name of the purchased model, refer to the specification label on the back of the monitor.  
Getting the most from your BenQ monitor  
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How to install the monitor on a new computer  
This instruction details the procedure for selecting and installing the BenQ LCD Monitor driver  
software on a new computer which has never had a monitor driver installed before. This  
instruction is only suitable for a computer which has never been used before, and for which the  
BenQ LCD Monitor is the first ever monitor to be connected to it.  
If you are adding the BenQ LCD Monitor to an existing computer that has already had another monitor  
connected to it (and has monitor driver software installed), you should not be following these instructions. You  
should instead be following the instructions for How to upgrade the monitor on an existing computer.  
1. Follow the instructions in Getting the most from your BenQ monitor on page 23.  
When Windows starts, it will automatically detect the new monitor and launch the Found New  
Hardware Wizard. Follow the prompts until it displays the option to Install Hardware Device  
Drivers.  
2. Insert the BenQ LCD Monitor CD-ROM into a CD drive on the computer.  
3. Check Search for a suitable driver for my device option, and click Next.  
4. Check the option for CD-ROM drives (uncheck all others) and click Next.  
5. Look to confirm that the wizard has selected the correct name of your monitor and click  
Next.  
6. Click Finish.  
7. Restart the computer.  
To find the suitable driver files for the purchased model, refer to the following table.  
Driver files  
RL2450H  
Suitable models  
RL2450H /RL2450HT  
RL2455HM  
RL2455  
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How to upgrade the monitor on an existing computer  
This instruction details the procedure for manually updating the existing monitor driver  
software on your Microsoft Windows computer. It is currently tested as compatible for  
Windows 8, Windows 7, and Windows Vista Operating System (OS).  
The BenQ LCD Monitor driver for your model may well function perfectly with other versions of Windows,  
however, as at the time of writing, BenQ has done no testing of this driver on other versions of Windows and  
cannot guarantee its operation on those systems.  
Installing monitor driver software involves selecting an appropriate information file (.inf) on the  
BenQ LCD Monitor CD-ROM for the particular model monitor you have connected, and  
letting Windows install the corresponding driver files from the CD. You need only steer it in  
the right direction. Windows has an Upgrade Device Driver Wizard to automate the task and  
guide you through the file selection and installation process.  
See:  
Getting the most from your BenQ monitor  
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How to install on Windows 8 system (selected models only)  
1. Open Display Properties.  
Move the cursor to the lower-right of the screen or press the Windows + C buttons on the  
keyboard to bring up the Charm bar. Go to Settings, Control Panel, Devices and Printers  
and right-click the name of your monitor from the menu.  
Alternatively, right-click the desktop and select Personalize, Display, Devices and Printers,  
and right-click the name of your monitor from the menu.  
2. Select Properties from the menu.  
3. Click the Hardware tab.  
4. Click Generic PnP Monitor, and then the Properties button.  
5. Click the Driver tab and the Update Driver button.  
6. Insert the BenQ LCD Monitor CD-ROM into a CD drive on the computer.  
7. In the Update Driver Software window, select the option Browse my computer for  
driver software.  
8. Click Browse and navigate to the following directory: d:\BenQ_LCD\Driver\ (where d is  
the drive letter designator for the CD-ROM drive).  
The drive letter for your CD drive may differ from the example above depending upon your system - it may be  
'D:' or 'E:' or 'F:' etc.  
9. Select the correct folder name of your monitor from provided driver list, and click Next.  
This will copy and install the appropriate monitor driver files to your computer.  
10. Click Close.  
You may be prompted to restart your computer after the driver update is complete.  
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How to install on Windows 7 system  
1. Open Display Properties.  
Go to Start, Control Panel, Hardware and Sound, Devices and Printers and right-click the  
name of your monitor from the menu.  
Alternatively, right-click the desktop and select Personalize, Display, Devices and Printers,  
and right-click the name of your monitor from the menu.  
2. Select Properties from the menu.  
3. Click the Hardware tab.  
4. Click Generic PnP Monitor, and then the Properties button.  
5. Click the Driver tab and the Update Driver button.  
6. Insert the BenQ LCD Monitor CD-ROM into a CD drive on the computer.  
7. In the Update Driver Software window, select the option Browse my computer for  
driver software.  
8. Click Browse and navigate to the following directory: d:\BenQ_LCD\Driver\ (where d is  
the drive letter designator for the CD-ROM drive).  
The drive letter for your CD drive may differ from the example above depending upon your system - it may be  
'D:' or 'E:' or 'F:' etc.  
9. Select the correct folder name of your monitor from provided driver list, and click Next.  
This will copy and install the appropriate monitor driver files to your computer.  
10. Click Close.  
You may be prompted to restart your computer after the driver update is complete.  
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How to install on Windows Vista systems  
1. Open Display Settings.  
Right-click the desktop and select Personalize from the popup menu.  
Select Display Settings from the Personalize appearance and sounds window.  
The Display Settings window will display.  
2. Click the Advanced Settings button.  
The Generic PnP Monitor Properties window will display.  
3. Click the Monitor tab and the Properties button.  
4. Click Continue in the prompted User Account Control window.  
5. Click the Driver tab and the Update Driver button.  
6. Insert the BenQ LCD Monitor CD-ROM into a CD drive on the computer.  
7. In the Update Driver Software window, select the option Browse my computer for  
driver software.  
8. Click Browse and navigate to the following directory: d:\BenQ_LCD\Driver\ (where d is  
the drive letter designator for the CD-ROM drive).  
The drive letter for your CD drive may differ from the example above depending upon your system – it may be  
‘D:’ or ‘E:’ or ‘F:’ etc.  
9. Select the correct folder name of your monitor from provided driver list, and click Next.  
This will copy and install the appropriate monitor driver files to your computer.  
10. Click Close.  
You may be prompted to restart your computer after the driver update is complete.  
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How to adjust your monitor  
The control panel  
1
2
No.  
1.  
Name  
Description  
Control keys  
Accesses the functions or menu items displayed on the screen,  
right next to each key.  
2.  
Power key  
Turns the power on or off.  
How to adjust your monitor  
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Basic menu operation  
All OSD (On Screen Display) menus can be accessed by the control keys. You can use the OSD  
menu to adjust all the settings on your monitor.  
1
2
Picture Mode  
Display Mode  
Smart Scaling  
Menu  
Exit  
4
3
Picture Mode  
Display Mode  
Smart Scaling  
Menu  
Exit  
1. Press any of the control keys.  
2. The hot key menu is displayed. The top three controls are custom keys and are designated  
for particular functions.  
3. Select Menu to access the main menu.  
4. In the main menu, follow the icons next to the control keys to make adjustments or  
selection. See Navigating the main menu on page 34 for details on the menu options.  
OSD icon  
in main  
menu  
OSD in hot key  
No.  
Function  
menu  
Custom Key 1  
• By default, the key is the hot key for Picture Mode.  
To change the default settings, see Customizing the  
• For Up/Increase adjustment.  
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OSD icon  
in main  
menu  
OSD in hot key  
menu  
No.  
Function  
Custom Key 2  
• By default, the key is the hot key for Display Mode.  
To change the default settings, see Customizing the  
• For Down/Decrease adjustment.  
Custom Key 3  
• By default, the key is the hot key for Smart Scaling.  
To change the default settings, see Customizing the  
/
• Enters sub menus.  
• Selects menu items.  
MENU  
Exit  
• Activates the main menu.  
• Returns to the previous menu.  
Exits OSD menu.  
• OSD = On Screen Display.  
The hot keys only operate while the main menu is not currently displaying. Hot key displays will disappear after  
a few seconds of no key activity.  
To unlock the OSD controls, press and hold any key for 10 seconds.  
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Picture optimization  
The default picture mode is RTS, which is designed for RTS games. If you prefer other picture modes, go to  
Picture Advanced and change setting in Picture Mode.  
The easiest way to obtain an optimal display from an analog (D-Sub) input is to use the Auto  
Adjustment function. Go to Display and Auto Adjustment to optimize the currently displayed  
image to the screen.  
When you connect a digital video output using a digital (DVI or HDMI) cable to your monitor, the Auto  
Adjustment function will be disabled, because the monitor will automatically display the best image.  
Please ensure that the connected graphic card on your computer is set to the native resolution of the monitor  
when you use the Auto Adjustment function.  
If you wish, you can always adjust the screen geometric settings manually using geometry menu  
items. To assist you in this endeavour, BenQ has provided a screen test image utility which you  
can use to check for screen color, grayscale and line gradient display.  
1. Run the test program auto.exe from CD-ROM. You could also use any other image, such as  
the desktop of your operating system. However, we recommend that you use auto.exe. As  
you run auto.exe, a test pattern displays.  
2. Press any of the control keys to bring up the hot key menu. Select Menu to enter the main  
menu.  
3. Go to Display and Auto Adjustment.  
4. If you notice a vertical noise (like a curtain effect-shimmering of vertical lines), select Pixel  
Clock and adjust the monitor until the noise disappears.  
5. If you notice a horizontal noise, select Phase and adjust the monitor until the noise  
disappears.  
Customizing the hot keys  
The top 3 control keys (also called custom keys) perform as hot keys to provide direct access  
to pre-defined functions. You can change the default setting and designate different functions for  
these keys.  
1. Press any of the control keys to bring up the hot key menu, and press Menu to access the  
main menu.  
2. Go to System.  
3. Select the custom key you want to change.  
4. In the sub menu, select a function that can be accessed by this key. A pop-up message will  
appear, showing that the setup is complete.  
Setting up your own game mode  
There are several preset picture modes on your monitor that are suitable for games. To better  
suit your needs, you can change and save the related display settings, and switch to your own  
game mode easily.  
1. Adjust the related display settings in different OSD menus. Settings that can be customized  
for game mode are:  
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2. After all settings are done, go to Save Settings and save as one of the game modes.  
3. If you want to switch to your game mode at any time, go to Picture Advanced and  
Picture Mode, and select the game mode you saved in Step 2. Your preferred display  
settings will be applied all at once.  
Adjusting display mode  
To display images of aspect ratio other than 16:9 and size other than 24", you can adjust the  
display mode on the monitor.  
1. Press any of the control keys to bring up the hot key menu, and press Menu to access the  
main menu.  
2. Go to Picture Advanced and Display Mode.  
3. Select an appropriate display mode. The setting will take effect immediately.  
Switch to the desired display mode first, and follow the instructions in Using Smart Scaling on page 33 to adjust  
the display size to precisely suit your needs.  
Using Smart Scaling  
You can resize your display by Smart Scaling.  
1. Go to Picture Advanced and Smart Scaling.  
2. Adjust the value.  
• If one of the custom keys is preset for Smart Scaling, you can press the custom key and adjust the value  
directly.  
Your display may become unstable temporarily when being resized. This is a normal phenomenon and should  
not be considered as manufacturing defect.  
• For more information on Smart Scaling, go to Smart Scaling on page 41.  
How to adjust your monitor  
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Navigating the main menu  
You can use the OSD (On Screen Display) menu to adjust all the settings on your monitor.  
Press any of the control keys to bring up the hot key menu, and press Menu to access the main  
menu. See Basic menu operation on page 30 for details.  
Available menu options may vary depending on the input sources, functions and settings. Menu  
options that are not available will become grayed out. And keys that are not available will be  
disabled and the corresponding OSD icons will disappear.  
The OSD menu languages may differ from the product supplied to your region, see Language on page 45 under  
System and OSD Settings for more details.  
For more information on each menu, please refer to the following pages:  
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Display menu  
Available menu options may vary depending on the input sources, functions and settings. Menu  
options that are not available will become grayed out. And keys that are not available will be  
disabled and the corresponding OSD icons will disappear.  
Mode: Standard  
Display  
Auto Adjustment  
H.Position  
V.Postion  
50  
Picture  
Picture Advanced  
Save Settings  
Audio  
Pixel Clock  
Phase  
System  
1. Select Menu from the hot key menu.  
2. Use  
3. Select  
4. Use  
or  
to go to a sub menu, and then use  
or to make adjustments, or use  
to select Display.  
or  
to select a menu item.  
to make selection.  
5. To return to the previous menu, select  
.
6. To exit the menu, select  
.
Item  
Function  
Range  
Auto Adjustment  
Optimizes and adjusts the screen settings  
automatically for you.  
Not applicable to a digital input signal.  
H. Position  
V. Position  
Pixel Clock  
Adjusts the horizontal position of the screen image. 0 to 100  
Adjusts the vertical position of the screen image.  
0 to 100  
0 to 100  
Adjusts the pixel clock frequency timing to  
synchronize with the analog input video signal.  
Not applicable to a digital input signal.  
Navigating the main menu  
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Item  
Function  
Range  
Phase  
Adjusts the pixel clock phase timing to synchronize 0 to 63  
with the analog input video signal.  
Not applicable to a digital input signal.  
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Picture menu  
Available menu options may vary depending on the input sources, functions and settings. Menu  
options that are not available will become grayed out. And keys that are not available will be  
disabled and the corresponding OSD icons will disappear.  
Mode: Photo  
Display  
Brightness  
Contrast  
Normal  
Bluish  
R
G
B
100 100 100  
Picture  
Picture Advanced  
Save Settings  
Audio  
Sharpness  
Black eQualizer  
Gamma  
Reddish  
User Mode  
System  
ColorTemperature  
Hue  
Saturation  
1. Select Menu from the hot key menu.  
2. Use  
3. Select  
4. Use  
or  
to go to a sub menu, and then use  
or to make adjustments, or use  
to select Picture.  
or  
to select a menu item.  
to make selection.  
5. To return to the previous menu, select  
.
6. To exit the menu, select  
.
Item  
Function  
Range  
0 to 100  
0 to 100  
Brightness  
Contrast  
Adjusts the balance between light and dark shades.  
Adjusts the degree of difference between darkness and  
lightness.  
Sharpness  
Adjusts the clarity and visibility of the edges of the subjects 1 to 10  
in the image.  
Black  
eQualizer  
Brings out the dark shades by increasing the brightness  
without changing those of the light shades.  
0 ~ 20  
If the image is too bright or barely contains any dark shades,  
adjusting the value of Black eQualizer may not show much change  
to the image.  
Navigating the main menu  
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Item  
Function  
Range  
Gamma  
Adjusts the tone luminance. The default value is 3 (the  
standard value for Windows).  
Gamma 1  
Gamma 2  
Gamma 3  
Gamma 4  
Gamma 5  
Color  
Temperature  
Normal  
Allows video and still photographs to be viewed  
with natural coloring. This is the factory default  
color.  
Bluish  
Applies a cool tint to the image and is factory  
pre-set to the PC industry standard white color.  
Reddish  
Applies a warm tint to the image and is factory  
pre-set to the news print standard white color.  
User  
Mode  
The blend of the Red, Green and Blue primary R (0~100)  
colors can be altered to change the color tint of  
the image. Go to the succeeding R (red), G  
G (0~100)  
B (0~100)  
(green), and B (blue) menus to change the  
settings.  
Decreasing one or more of the colors will  
reduce their respective influence on the color  
tint of the image. (e.g. if you reduce the Blue  
level the image will gradually take on a yellowish  
tint. If you reduce Green, the image will become  
a magenta tint.)  
Hue  
Adjusts the degree of how we perceive colors.  
Adjusts the purity degree of colors.  
0 ~ 100  
0 ~ 100  
Saturation  
Reset Color  
Resets the custom color settings to the factory defaults.  
YES  
NO  
AMA  
Improves the gray level response time of the LCD panel.  
ON  
OFF  
Instant  
Mode  
Adjusts the image processing to diminish input lag. You can ON  
have a real-time experience while playing games.  
OFF  
To optimize the picture quality, disable Instant Mode if the source  
is interlaced video. To check the resolution of the video source,  
go to System and Information on the monitor.  
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Picture Advanced menu  
Available menu options may vary depending on the input sources, functions and settings. Menu  
options that are not available will become grayed out. And keys that are not available will be  
disabled and the corresponding OSD icons will disappear.  
Mode: RTS  
Display  
Picture Mode  
Standard  
Movie  
Photo  
sRGB  
Picture  
Senseye Demo  
Dynamic Contrast  
Over-scan  
Picture Advanced  
Save Settings  
Audio  
Display Mode  
Eco  
System  
Smart Scaling  
RTS 1  
RTS 2  
Gamer1  
Color Format  
HDMI RGB PC Range  
1. Select Menu from the hot key menu.  
2. Use  
3. Select  
4. Use  
or  
to go to a sub menu, and then use  
or to make adjustments, or use  
to select Picture Advanced.  
or  
to select a menu item.  
to make selection.  
5. To return to the previous menu, select  
.
6. To exit the menu, select  
Item  
.
Function  
Range  
Picture  
Mode  
Select a picture mode that best suits the type of images shown  
on the screen.  
The default setting is RTS. Change the setting if needed.  
Standard  
Movie  
For basic PC application.  
For viewing videos.  
Photo  
For viewing still images.  
sRGB  
For better color matching representation with  
the peripheral devices, such as printers, digital  
cameras, etc.  
Eco  
For saving electricity with low power  
consumption by providing minimum brightness  
for all running programs.  
Navigating the main menu  
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Item  
Function  
Range  
RTS 1  
For playing RTS (Real-time strategy) games.  
For playing DOTA2 games.  
RTS 2  
Gamer1  
Gamer2  
Gamer3  
Applies customized display settings.  
For details on setting up a game mode, see Setting  
Senseye  
Demo  
Displays the preview of screen images under the selected  
mode from Picture Mode. The screen will be divided into two  
windows; the left window demonstrates images of Standard  
mode, while the right window presents the images under the  
specified mode.  
ON  
OFF  
Dynamic  
Contrast  
The function is to automatically detect the distribution of an 0 to 5  
input visual signal, and then to create the optimal contrast.  
Overscan  
Slightly enlarges the input image. Use this feature to hide  
annoying edge noise if present around your image.  
ON  
OFF  
Available only when the input source is HDMI or D-Sub (VGA  
converted from Component).  
Display  
Mode  
This feature is provided to allow aspect ratios other than 16:9  
to be displayed without geometric distortion.  
The options under Display Mode will be different depending on the  
input signal sources.  
Depending on your selection of Picture Mode, different Display  
Mode option is pre-set. Change the setting if needed.  
Full  
Scales the input image to fill the screen. Ideal  
for 16:9 aspect images.  
Aspect  
The input image is displayed without geometric  
distortion filling as much of the display as  
possible.  
1:1  
Displays the input image in its native resolution  
without scaling.  
17" (4:3)  
19" (4:3)  
Displays the input image as if on a 17" monitor  
of 4:3 aspect ratio.  
Displays the input image as if on a 19" monitor  
of 4:3 aspect ratio.  
19"W  
(16:10)  
Displays the input image as if on a 19"W  
monitor of 16:10 aspect ratio.  
21.5" (16:9)  
Displays the input image as if on a 21.5"  
monitor of 16:9 aspect ratio.  
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Item  
Function  
Range  
22"W  
(16:10)  
Displays the input image as if on a 22"W  
monitor of 16:10 aspect ratio.  
23"W (16:9)  
Displays the input image as if on a 23"W  
monitor of 16:9 aspect ratio.  
Smart  
Scaling  
Adjusts the display size to best suit your needs.  
0 ~ 100  
If the Display Mode is 17", 19" (4:3), 21.5", or 19"W, the last 4  
scaling settings (in different resolutions of the input source) will be  
saved for quick access.  
If the Display Mode is 1:1 (and the resolution of the input source is  
lower than 1920 x 1080), the last 3 scaling settings (in different  
resolutions of the input source) will be saved for quick access.  
Color  
Format  
Determines the color space (RGB or YUV) based on the  
detected video signal.  
You might need to manually set the Color Format if colors shown on  
the monitor screen do not display properly.  
If the input source is HDMI, color format is not selectable. In other  
words, Color Format is automatically set depending on the input  
video source.  
RGB  
• For D-Sub (VGA) input source from PC.  
• For DVI input source.  
YUV  
For D-Sub (Component converted from VGA)  
input source from a video device.  
HDMI RGB  
PC Range  
Determines the range of color scales. Select an option that  
matches the RGB range setting on the connected HDMI  
device.  
RGB (0 ~  
255)  
RGB (16 ~  
235)  
Smart  
Focus  
This feature provides a highlight area to focus on certain  
content, e.g. a YouTube video or an online game.  
Size  
Determines the size of the highlight area.  
Small  
Large  
OFF  
H. Position  
V. Position  
Scaling  
Adjusts the horizontal position of the highlight 0 ~ 100  
area.  
Adjusts the vertical position of the highlight  
area.  
0 ~ 100  
Scales the highlight area.  
0 ~ 100  
Navigating the main menu  
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Save Settings menu  
Available menu options may vary depending on the input sources, functions and settings. Menu  
options that are not available will become grayed out. And keys that are not available will be  
disabled and the corresponding OSD icons will disappear.  
Mode: RTS  
Display  
Gamer 1  
Gamer 2  
Gamer 3  
Picture  
Picture Advanced  
Save Settings  
Audio  
System  
1. Select Menu from the hot key menu.  
2. Use  
3. Select  
4. Use  
or  
to select Save Settings.  
to go to a sub menu, and then use  
to make selection.  
or  
to select a menu item.  
5. To return to the previous menu, select  
.
6. To exit the menu, select  
.
Item  
Function  
Range  
Gamer 1  
Gamer 2  
Gamer 3  
Saves a new set of customized display settings.  
-
information on applying the game mode.  
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Audio menu  
Available menu options may vary depending on the input sources, functions and settings. Menu  
options that are not available will become grayed out. And keys that are not available will be  
disabled and the corresponding OSD icons will disappear.  
Mode: Standard  
Display  
Volume  
50  
Picture  
Mute  
Picture Advanced  
Save Settings  
Audio  
Audio Select  
System  
1. Select Menu from the hot key menu.  
2. Use  
3. Select  
4. Use  
or  
to go to a sub menu, and then use  
or to make adjustments, or use  
to select Audio.  
or  
to select a menu item.  
to make selection.  
5. To return to the previous menu, select  
.
6. To exit the menu, select  
.
Item  
Function  
Range  
0 ~ 100  
Volume  
Mute  
Adjusts the audio volume.  
Mutes the audio input.  
ON  
OFF  
Audio Select  
(for models with  
more than 2 audio  
sources)  
Allow users to select the audio source or let the  
monitor detect it automatically.  
PC Audio  
HDMI Audio  
Auto Detect  
Navigating the main menu  
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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. And keys that are not available will be  
disabled and the corresponding OSD icons will disappear.  
Mode: Standard  
D-Sub  
DVI  
Display  
Input  
Picture  
OSD Settings  
Custom Key 1  
Custom Key 2  
Custom Key 3  
Auto Power Off  
DDC/CI  
HDMI  
Picture Advanced  
Save Settings  
Audio  
System  
HDMI Auto Switch  
1. Select Menu from the hot key menu.  
2. Use  
3. Select  
4. Use  
or  
to go to a sub menu, and then use  
or to make adjustments, or use  
to select System.  
or  
to select a menu item.  
to make selection.  
5. To return to the previous menu, select  
.
6. To exit the menu, select  
.
Item  
Function  
Range  
Input  
Use this to change the input to that appropriate to your  
video cable connection type.  
(For RL2450T /  
RL2450HT)  
D-Sub  
DVI  
HDMI  
(For RL2455HM)  
D-Sub  
DVI  
HDMI1  
HDMI2  
44  
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Item  
Function  
Range  
OSD  
Settings  
Language  
• English  
Sets the OSD menu language.  
• Français  
• Deutsch  
• Italiano  
Español  
• Polski  
The language options displayed on your OSD may  
differ from those shown on the right, depending  
on the product supplied in your region.  
Česky  
• Magyar  
• Serbo-croatia  
• Română  
• Nederlands  
Русский  
• Svenska  
• Português  
日本語  
繁體中文  
简体中文  
Display  
Time  
Adjusts the display time of the OSD menu.  
5 Sec.  
10 Sec.  
15 Sec.  
20 Sec.  
25 Sec.  
30 Sec.  
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.  
To unlock the OSD controls, press and hold any  
key for 10 seconds.  
Customer  
Key 1  
Sets the function to be accessed by custom key 1.  
Sets the function to be accessed by custom key 2.  
Sets the function to be accessed by custom key 3.  
Picture mode  
Display Mode  
Smart Scaling  
Brightness  
Contrast  
Customer  
Key 2  
Customer  
Key 3  
Smart Focus  
Volume  
Mute  
Input  
Black  
eQualizer  
Navigating the main menu  
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Item  
Function  
Range  
OFF  
Auto Power  
Off  
Sets the time to power off the monitor automatically in  
power saving mode.  
10min.  
20min.  
30min.  
DDC/CI  
Allows the monitor settings to be set through the software ON  
on the PC.  
OFF  
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.  
HDMI Auto  
Switch  
When this function is activated, HDMI port will be in the ON  
input auto select loop. Otherwise, HDMI can only be  
OFF  
selected by input select or by hot key.  
Resolution  
Notice  
Sets whether to display the resolution notice of the  
recommended resolution when a new input source is  
detected by the monitor.  
ON  
OFF  
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.  
YES  
NO  
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Troubleshooting  
Frequently asked questions (FAQ)  
The image has a faulty coloration.  
• The default Picture Mode is RTS, which is designed for RTS games. If you prefer other  
picture modes, go to Picture Advanced and change setting in Picture Mode.  
• If the image has a yellow, blue or pink appearance, go to Picture and Reset Color, and then  
choose YES 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.  
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.  
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".  
Troubleshooting  
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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  
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 it is preset to be locked, press and hold any key for 10  
seconds.  
No sound can be heard from the built-in speakers (for models with speakers only):  
• Check whether Line In is properly connected.  
• Increase the volume (volume may be muted or too low).  
• Remove your headphone and/or external speakers. (If they are connected to the monitor,  
the built-in speakers are automatically muted.)  
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No sound can be heard from the connected external speakers.  
• Remove your headphone (if the headphone is connected to the monitor).  
• Check whether the headphone jack is properly connected.  
• If the external speakers are USB-powered, check whether the USB connection is OK.  
• Increase the volume (volume may be muted or too low) on the external speakers.  
Need more help?  
If your problems remain after checking this manual, please contact your place of purchase or  
e-mail us at: [email protected].  
Troubleshooting  
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