Runco D-73d Ultra, Installation & Operation Manual

Page: 118 / 152

Maintenance and Troubleshooting
102 D-73d Series Installation/Operation Manual
Images from an HDMI source
do not display. • The resolution and
frequency of the video
card in the computer are
not compatible with the
D-73d.
• EDID compatibility issue.
• HDMI cable from source to
Dimension Digital
Controller is either
defective or too long.
• Select a compatible
resolution and vertical
frequency (refer to
Supported Timings on
page 130).
• Set HDMI EDID Extension
to “Off” (refer to HDMI
EDID Extension on
page 95).
• Try a known-good and/or
shorter HDMI cable.
Video from an HDMI source
lags behind audio. • Refer to Audio/Video
Synchronization Issues
on page 29.
• Use an external A/V
receiver with audio delay
capability to synchronize
the audio signal with the
video signal.
The image is too large or too
small. • Image size needs
adjusting.
• Adjust the image size
(refer to Input Position on
page 76).
When displaying 3D content,
crosstalk or “ghosting” can be
seen — that is, the left eye is
perceiving some of what the
right eye should be seeing or
vice versa. • Primary and Secondary
images are not properly
aligned.
• Rear-projection installation
uses second-surface
mirrors that are producing
faint, secondary
reflections.
• Screen is not
3D-compatible (refer to
Choosing A Screen on
page 24).
• Refer to Power-Up
Sequence and Optical
Alignment Procedure
on
page 51.
• Always use first-surface
mirrors in your
rear-projection installation.
• Install a 3D-compatible
screen.
AutoScope lens motor
doesn’t work. • The motor is not plugged
in or the AC outlet is not
active.
• The motor is not
connected to the trigger
output on the projector.
• Ensure that the motor is
plugged in and that the AC
outlet is active.
• Check the trigger
connection between the
lens motor and projector
(Figure 3-8).
Table 5-1. Troubleshooting Chart (continued)
Symptom Possible Cause(s) Solution