101
General Troubleshooting Guide
202P4 M25P
Picture too dim
Note :
1. Sun light passing through a window is much brighter than monitor
luminance (Luminance is the measurable quantity which most closely
corresponds to brightness), therefore the two worst places for a monitor
is directly facing the window or directly behind the window.
Position the monitor away from these two areas.
2. External Anti-Glare screens or Mask
These external screens reduce overall monitor brightness and contrast
forcing the viewer to maximize too much front screen brightness.
Too much front screen brightness degrades focus and continuous use in this
manner will shorten CRT life by overdriving the CRT guns and phosphors.
3. Some models have a Video Input Select under Advanced Controls in the
Monitor's On-Screen Display. Most computers require it to be set at 0.7V.
Adjust Brightness and/or contrast
via the Monitor "On-Screen Display"
or "Front Control Knob".
END
Is picture displayed
normally?
YES
It is need to check and
repair the monitor.
NO
Is an external Anti-Glare screen
(like protective cover, touch
screen..etc.) being used ?
Remove any external
Anti-Glare screen.
NO
END
Is picture displayed
normally?
YES
* Reset the monitor via OSD manipulation.
(Select "
Reset to Factory settings
".)
*(or => Change the color temperature settings
to be 9300 color coordination from OSD menu.)
*(or => Set video input level to 0.7V on the OSD
menu for some models.)
* Try the monitor with another computer
(Video card could be defective.)
END
Is picture displayed
normally?
YES
NO
NO
9
Содержание 202P4
Страница 31: ...Terminal Schematic Diagram A1 Go to cover page ...
Страница 33: ......
Страница 34: ......
Страница 35: ...Go to cover page ...
Страница 37: ...Key Control Schematic Diagram 202P4 M25P 32 34 Go to cover page E ...
Страница 39: ...Go to cover page ...
Страница 41: ......
Страница 43: ...Power Schematic Diagram C C1 C6 C2 C7 C3 C4 C5 C9 C8 Go to cover page ...
Страница 45: ...Drive Schematic Diagram 202P4 M25P 32 38 D Go to cover page ...
Страница 91: ...83 202P4 M25P Repair Flow Chart Go to cover page 7 0 2 ...