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Maintaining the Projector
40
English
Problem
When viewing text on the
projected image, some of the
characters seem darker or
thicker than others.
The image is noisy in video
mode.
The image lacks red, blue, or
green color.
The bottom of the projected
image is straight but the top
is crooked.
The remote control does not
work correctly.
The projected image is rolling
vertically or horizontally.
Table 7: Troubleshooting Procedures
Solution
The frequency of the projector does not match
the frequency of the computer.
1 Press the Menu button on the remote con-
trol or the keypad on the projector.
2 Select Picture from the menu.
3 Select Frequency from the menu.
4 Use the left and right direction keys on the
remote control or on the projector keypad
to adjust the frequency up or down until all
of the text characters are the same.
Use a continuity tester to check for poor or
open ground on the video cable.
Check the contrast adjustment. Also, check
the VGA cable for broken or bent pins.
Align the projector so that it directly faces the
screen. See "Leveling the Image" on page 13.
Check that the IR (infrared) window on the
front of the projector is not blocked. Check
that the red power LED is energized when any
button is pushed. If not, check the batteries in
the remote control.
Check for broken or bent pins on the VGA
cable. The problem may also be related to the
computer refresh rate. The projector is able to
synchronize with a refresh rate between
55.378 and 85Hz. Any refresh rate outside
these limits will cause problems with the pro-
jected image. Check the refresh rate of the
computer and adjust it if necessary.
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