Benq T720 User Manual

Troubleshooting

Troubleshooting

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Troubleshooting  
Troubleshooting
Frequently Asked Questions (FAQ)
The image is blurred:
Read the Installation/Application section, 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 Installation/Adjustment section 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 Installation/Adjustment section. 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.
Read the Pixel error rates section.
The image has a faulty coloration:
It has a yellow, blue or pink appearance.
On the monitor, press “Enter” key and press 
 or 
 key to move to the “Recall” icon and press 
“Enter” key to enter “Recall” sub menu. Press 
 or 
 key to select “Color Recall” and select 
“Yes” in “Color Recall” sub menu, then press “Enter” key to recall to factory settings. 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 “Supported operating modes” section.
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.
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