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Maintenance and Troubleshooting
86 Vision Model 140/150 Installation/Operation Manual
PRE
L
IMINAR
Y
The display is jittery or
unstable.
• Poor-quality or improperly
connected source.
• The horizontal or vertical
scan frequency of the input
signal may be out of range
for the projector.
• Ensure that the source is
properly connected and of
adequate quality for
detection.
• Correct at the source.
Image is too bright and/or
lacks definition in the bright
areas of the image.
• Contrast is set too high. • Lower the contrast setting.
Image appears “washed out”
and/or dark areas appear too
bright.
• Brightness is set too high. • Lower the brightness
setting.
Colors in the image are
swapped; for example, reds
appear blue or vice versa.
• The Red/Pr, Green/Y or
Blue/Pb outputs from the
source are connected to the
wrong inputs on the VHD
Controller.
• Ensure that the source
outputs are connected to
the correct VHD Controller
input.
The display freezes suddenly. • Excessive voltage noise on
the AC or ground input has
interrupted the projector’s
ability to lock on to a signal.
• Power down the projector
and disconnect from AC.
Then, plug in again and
power up as usual.
The projector will not turn
back on after it was powered
down, or the image disappears
during operation.
• The projector will not turn
on for two minutes after
power-down, to protect the
lamp.
• The lamp has failed.
• Wait until the LED at the
front of the VHD Controller
turns red.
• Replace the lamp.
AutoScope lens motor does
not work.
• The motor is not plugged in
or the AC outlet is not
active.
• The motor is not connected
to a trigger output on the
VHD Controller.
• Incorrect trigger
assignment.
• Ensure that the motor is
plugged in and that the AC
outlet is active.
• Check the trigger
connection between the
lens motor and VHD
Controller (
Figure 3-15).
• Correct the trigger
assignment (refer to
Configure Lens Motor
Trigger (CineWide with
AutoScope) on page 41).
Table 5-1. Troubleshooting Chart (continued)
Symptom Possible Cause(s) Solution