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18
3 TROUBLESHOOTING
Points to check with possible solutions
These are dampening wires. Dampening wires are used
to support the CRT’s aperture grille, and are visible as
thin dark lines across the screen. All EIZO aperture-
grille type CRTs include two such
horizontal wires.
The aperture grille itself is a grid of taut metal filaments
that spans the entire screen from top to bottom.
The aperture grille may be misaligned. Shock or
vibration during transport may, in some cases, cause the
aperture grille to fall out of alignment. The problem
will appear as one or more faint black lines across the
screen.
If this problem occurs, it may be able to solved by:
• degaussing the screen, or
• lightly tapping (do not hit) the side of
the monitor.
If neither of these methods works, try executing the
following procedure.
1) Display a bright white field over the area where
the black line(s) appear, with a black field over
the unaffected areas. (Do this by opening a
bright-white window on top of a black desktop
or wallpaper background. Position the window
so that it just covers the area of misalignment.)
2) Set brightness and contrast to maximum values,
and keep the display ON until the problem is
corrected. Try tapping the side of the display
lightly to help expedite realignment. The white
field will heat up the misaligned area of the
grille, returning it to proper alignment.
Problems
13)Two horizontal hairlines are
visible on the screen.
14)Faint black vertical lines are
visible on the screen.