LCD monitor
Edition 2 English - 9
Having this problem? Check the following points:
Picture is shaking Ź Check whether the data cable for the monitor is
correctly attached to the monitor port on the
computer.
Ź Carry out the auto-adjustment of the monitor (with
the AUTO button - if present - or via the OSD menu).
Picture disturbances (vertical lines) Ź Carry out the auto-adjustment of the monitor (with
the AUTO button - if present - or via the OSD menu).
Picture disturbances
(horizontal lines, picture noise)
Ź Carry out the auto-adjustment of the monitor (with
the AUTO button - if present - or via the OSD menu).
Picture too light or too dark
Ź Carry out the auto-adjustment of the monitor (with
the AUTO button - if present - or via the OSD menu).
Ź Correctly set the contrast and brightness with the
OSD menu if the auto-adjustment function does not
supply satisfactory results.
Permanently unlit or lit pixels
The standard of production techniques today cannot guarantee an absolutely fault-free screen
display. A few isolated constant lit or unlit pixels may be present. The maximum permitted number of
pixels faults is stipulated in the stringent international standard ISO 13406-2 (Class II).
Example: A 17"/19" flat-screen monitor with a resolution of 1280 x 1024 has 1280 x 1024 = 1310720
pixels. Each pixel consists of three subpixels (red, green and blue), so there are almost 4 million
subpixels (or dots) in total. According to ISO 13406-2 (Class II), a maximum of 6 pixels and 7
subpixels may be defective, i. e. a total of 25 defective dots.
A 22" wide flat-screen monitor with a resolution of 1680 x 1050 has 1680 x 1050 = 1764000 pixels.
Each pixel consists of three subpixels (red, green and blue), so there are almost 5 million subpixels
(or dots) in total. In accordance with ISO 13406-2 (Class II), a maximum of 8 pixels and an additional
10 subpixels may be defective.
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