BenQ G2255a User Manual

							  41   Appendix: Assembling your monitor with a height adjustment stand (HAS)
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.
2
1
3
 
						

							42 Appendix: Assembling your monitor with a height adjustment stand (HAS)  
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.
 
						

							  43   Appendix: Assembling your monitor with a height adjustment stand (HAS)
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 operating system on your PC, different procedures should be followed to adjust the screen 
orientation. Refer to the help document of your operating 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 the 
monitor to rotate from landscape to portrait mode. 
3. Rotate the monitor 90 degrees clockwise as 
illustrated. 
 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.
90
 
						

							44 Appendix: Assembling your monitor with a height adjustment stand (HAS)  
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.
4. Adjust the monitor to the desired viewing 
angle.
-5-5O O ~ +15~ +15O-5O ~ +15O
-45-45O O ~ +45~ +45O-45O ~ +45O
11 0  m m
 
						

							  45   Appendix: Assembling your monitor with a height adjustment stand (HAS)
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 base.
Lay the screen face down on a clean and well-padded 
surface. Detach the monitor base as instructed in How to 
detach the base on page 41.
2. Remove the monitor stand.
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.
3. Follow the instruction manuals of the wall 
mount bracket you purchased to complete 
the installation.
 
						

							46 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. 
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.
 
						

							  47   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] 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 32
 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.
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.)
No sound can be heard from the connected external speakers (for models with speakers 
only):
• 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.