Problems | Possible cause and remedy |
8.The screen is too bright or too dark.• Adjust <Brightness>. (The LCD monitor backlight has a fixed life span. When the screen becomes dark or begins to flicker, contact your local dealer.)
9. | Afterimages appear. | • | Use a screen saver or off timer function for a | |||||
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| image display. | |||
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| • Afterimages are particular to LCD monitors. Avoid | ||||
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| displaying the same image for a long time. | |||
10. Green/red/blue/white dots or defective dots remain | • | This is due to LCD panel characteristics and is not a | ||||||
| on the screen. |
| failure. |
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11. | Interference patterns or fingerprints remain on the | • | Leave the monitor with a white screen. The symptom | |||||
| screen. |
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| may disappear. | ||||
12. Noise appears on the screen. | • | Select 1 to 4 in <Signal Filter> from the <Screen> menu | ||||||
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| to change the mode. | |||
13. The [Smoothing] icon on the Adjustment menu | • | <Smoothing> is disabled with a resolution of 1600 × | ||||||
| [Screen] cannot be selected. |
| 1200 or 800 × 600 | |||||
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| • | <Smoothing> cannot be selected when the resolution is | |||
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| doubled with <Screen Size> menu. (Example: 640 × 480 | |||
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| is enlarged to 1280 × 960) | |||
14. The Main menu of Adjustment menu does not start. • | Check for Adjustment Lock function. | |||||||
15. The |
| button does not function. | • | The |
| button does not function when digital signal is | ||
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| input. |
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| • | Check whether the buttons are lockd. | |||
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| • | This function works correctly when an image is fully | |||
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| displayed over the Windows or Macintosh display area. | |||
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| It does not work properly when an image is displayed | |||
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| only on a part of the screen (DOS prompt window, for | |||
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| example) or when a black background (wallpaper, etc.) is | |||
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| in use. |
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| This function does not work correctly with some graphics | |||
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| boards. |
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16. Frequency does not change after the utility disk is | • | Change the input signal frequency using the graphics | ||||||
| installed on Windows 98/Me/2000/XP. |
| board’s utility software. | |||||
17. USB function cannot be set up. | • | Check whether the USB cable is connected correctly. | ||||||
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| • | Check whether the PC and OS are USB compliant. (For | |||
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| USB compliance of the respective devices, consult their | |||
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| manufacturers.) | |||
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| • | Check the PC’s BIOS setting for USB when using | |||
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| Windows 98/Me/2000/XP. Refer to the manual of the PC | |||
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| for details.) | |||
18. The PC does not work/USB devices connected to | Check whether the USB cable is connected correctly. | |||||||
| the monitor do not work. | • | Change the cable connection to another USB port. If the | |||||
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| PC works normally with this port change, contact your | |||
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| local dealer. (Refer to the manual of the PC for details.) | |||
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| • | Try the following: | ||
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| • | Reboot the PC. | ||
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| Connect the PC directly to the peripheral devices. | ||||
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| When the devices work normally without being connected | ||||
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| to the monitor (USB hub), contact your local dealer. | ||||
24 Chapter 4 Troubleshooting