HP P1230 Users Guide CRT Monitor p1230 - Page 22

Troubleshooting, User's Guide, Use the OSD Geometry - crt monitor monitor

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Troubleshooting Problem Possible Cause Solution Edges of the display Geometry settings are not Use the OSD Geometry image are not square. adjusted correctly. Controls to straighten the edges. If possible, position the front of the monitor facing east. Thin horizontal lines Thin horizontal lines are No action needed. appear on your screen. normal for an aperture grille CRT and are not a malfunction. These are shadows from the damper wires used to stabilize the aperture grille and are most noticeable when the screen's background is light (usually white). Black vertical lines are Grille element overlap Position an open white window visible on the screen. occurred during shipping. over the affected area of the screen and maximize the brightness and contrast controls for a few minutes. Readjust the brightness and contrast controls back to the normal viewing level after this procedure. User's Guide A-3

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Troubleshooting
Problem
Possible Cause
Solution
Edges of the display
image are not square.
Geometry settings are not
adjusted correctly.
Use the OSD Geometry
Controls to straighten the
edges.
If possible, position the front of
the monitor facing east.
Thin horizontal lines
appear on your screen.
Thin horizontal lines are
normal for an aperture
grille CRT and are not a
malfunction. These are
shadows from the damper
wires used to stabilize the
aperture grille and are
most noticeable when the
screen’s background is
light (usually white).
No action needed.
Black vertical lines are
visible on the screen.
Grille element overlap
occurred during shipping.
Position an open white window
over the affected area of the
screen and maximize the
brightness and contrast controls
for a few minutes. Readjust the
brightness and contrast controls
back to the normal viewing
level after this procedure.
User’s Guide
A-3