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32 Troubleshooting 

 

7. 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". 

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.

Summary of Contents for GL2440HM

Page 1: ...Welcome LCD Monitor User Manual GL2440HM...

Page 2: ...a power disconnect device for pluggable equipment The socket outlet should be installed near the equipment and be easily accessible This product should be operated from the type of power indicated on...

Page 3: ...enQ monitor 11 How to install the monitor on a new computer 12 How to upgrade the monitor on an existing computer 13 How to install on Windows 7 system 14 How to install on Windows Vista systems 15 Ho...

Page 4: ...heck you have the following items If any are missing or damaged please contact the place of purchase for a replacement BenQ LCD Monitor Monitor Base Quick Start Guide CD ROM Power Cord Picture may dif...

Page 5: ...hen you may need to transport the monitor The fitted foam packing is ideal for protecting the monitor during transport Video Cable DVI D Optional accessory for models with DVI inputs sold separately V...

Page 6: ...ew 1 Speakers 2 Power button 3 Control buttons 4 AC Power Input jack 5 Line In 6 Headphone jack 7 HDMI socket 8 DVI D socket 9 D Sub socket 10 Lock switch 2 3 1 1 4 10 8 9 5 6 7 Above diagram may vary...

Page 7: ...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...

Page 8: ...DVI D Cable 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...

Page 9: ...of the power cord into the socket labelled POWER IN 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 powe...

Page 10: ...k 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 s...

Page 11: ...r 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...

Page 12: ...uld instead be following the instructions for How to upgrade the monitor on an existing computer 1 Follow the instructions in How to assemble your monitor hardware on page 7 When Windows starts it wil...

Page 13: ...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...

Page 14: ...er button 5 Insert the BenQ LCD Monitor CD ROM into a CD drive on the computer 6 In the Update Driver Software window select the option Browse my computer for driver software 7 Click Browse and naviga...

Page 15: ...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 Clic...

Page 16: ...ivers are already installed and you need do nothing further Cancel out of these property windows However if BenQ is not listed as the manufacturer or the correct model is not currently shown you will...

Page 17: ...avour 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 o...

Page 18: ...Volume 4 Mode key For Down Decrease adjustment The key is the hot key for Mode 5 ENTER key Enters sub menus and select items For models with DVI inputs this key is also the hot key for Input 6 Power...

Page 19: ...while the key will decrease the volume To Mute press the Volume hot key for 3 seconds To release Mute press the Volume hot key for 3 more seconds Press the key continually to switch between the 6 mode...

Page 20: ...on page 30 under OSD Settings for more details For more information on each menu please refer to the following pages Display menu on page 21 Picture menu on page 23 Picture Advanced menu on page 25 A...

Page 21: ...keys to make adjustments or selections 5 To return to the previous menu press the MENU button DISPLAY MODE Standard Auto Adjustment H Position V Position Pixel Clock Phase 10 12 1 12 ENTER MENU Exit S...

Page 22: ...n image 0 to 100 Pixel Clock Adjusts the pixel clock frequency timing to synchronize with the analog input video signal Not applicable to a digital input signal See also Picture optimization on page 1...

Page 23: ...N Item Function Operation Range Brightness Adjusts the balance between light and dark shades Press the key to increase the brightness and press the key to decrease the brightness 0 to 100 Contrast Adj...

Page 24: ...uce 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 tin...

Page 25: ...NU button Picture Mode Senseye Demo Dynamic Contrast Display Mode Color Format HDMI RGB PC Range 0 Standard OFF RGB RGB 16 235 ENTER MENU Exit Select Move Item Function Operation Range Picture Mode Se...

Page 26: ...y Mode This feature is provided to allow aspect ratios other than 16 9 to be displayed without geometric distortion Overscan Slightly enlarges the input image Use this feature to hide annoying edge no...

Page 27: ...splay properly DVI for models with DVI inputs Color Format is automatically set to RGB HDMI Color Format is not selectable In other words Color Format is automatically set depending on the input video...

Page 28: ...keys to make adjustments or selections 5 To return to the previous menu press the MENU button Item Function Operation Range Volume Adjusts the audio volume Press the key to increase the volume and pr...

Page 29: ...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 SYSTEM MODE...

Page 30: ...oduct 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 Po...

Page 31: ...essible 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 chan...

Page 32: ...er 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...

Page 33: ...e 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 thes...

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