ViewSonic PT770 User Guide - Page 35

Troubleshooting, Cont.

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Troubleshooting Cont. Problem... Black text on a white background has color edges Possible Cause... Misalignment of the RGB displayed video Remedy... Adjust the Horizontal Convergence & Vertical Convergence Controls. E N Image is scrolling Signal connector pin G or unstable assignments incorrect? Use correct signal connector. L Signal cable properly connected? Connect signal cable properly. Color is abnormal Magnetic object nearby? Reorient object or monitor. Signal connector pin assignments incorrect? Use correct signal connector. Signal cable properly connected? Connect signal cable properly. Control Buttons do not work Are you pressing two or more control buttons simultaneously? Press only one button at a time. Image is distorted Is the earth's magnetic field interfering with display? Face monitor east for best image quality. 2 8 Troubleshooting ViewSonic PT770

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Troubleshooting
Cont.
E
N
G
L
Problem...
Possible
Cause...
Remedy...
Black
text
on
a
white
background
has
color
edges
Misalignment
of
the
RGB
displayed
video
Adjust
the
Horizontal
Convergence
&
Vertical
Convergence
Controls.
Image
is
scrolling
or
unstable
Signal
connector
pin
assignments
incorrect?
Signal
cable
properly
connected?
Use
correct
signal
connector.
Connect
signal
cable
properly.
Color
is
abnormal
Magnetic
object
nearby?
Signal
connector
pin
assignments
incorrect?
Signal
cable
properly
connected?
Reorient
object
or monitor.
Use
correct
signal
connector.
Connect
signal
cable
properly.
Control
Buttons
do
not
work
Are
you
pressing
two
or
more
control
buttons
simultaneously?
Press
only
one
button
at
a
time.
Image
is
distorted
Is
the
earth's
magnetic
field
interfering
with
display?
Face
monitor
east
for
best
image
quality.
2
8
Troubleshooting
ViewSonic
PT770