Runco D-73d Ultra, Installation & Operation Manual

Page: 117 / 152

Maintenance and Troubleshooting
D-73d Series Installation/Operation Manual 101
The “right-eye” optical engine
does not turn on or respond
to user commands. The vac-
uum fluorescent display on
the Dimension Digital Control-
ler front panel displays the fol-
lowing message:
Secondary Display Error
Communication Failure
• The serial connection from
the Dimension Digital
Controller to the “right-eye”
optical engine on the
display is incorrect or the
cable is faulty.
• Ensure that the
Sec. Display Control
(RS-232) output from the
Dimension Digital
Controller is properly
connected to the display
(see Figure 3-14).
The display and Dimension
Digital Controller both turn on,
but there is no picture and
on-screen menus do not
appear. • Faulty or incorrect video
connection from the
Dimension Digital
Controller to the display.
• Ensure that the HDMI
output from the Dimension
Digital Controller is
properly connected to the
display (see Figure 3-14).
• Try a known-good and/or
shorter HDMI cable.
The display is on and menus
appear, but there is no
picture. • Incorrect source selection.
• Source component is not
turned on.
• Source component is
connected incorrectly or
not at all.
• Select the correct source.
• Turn on the source
component.
• Check connections from
the source component to
the Dimension Digital
Controller.
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
Dimension Digital
Controller.
• Ensure that the source
outputs are connected to
the correct Dimension
Digital Controller input.
RGB-HD or Component HD
images appear “noisy” or
drop out intermittently. • Tracking and Phase
settings need adjustment.
• The Dimension Digital
Controller is having
difficulty detecting sync
pulses from the source.
• Adjust Tracking and Phase
settings (refer to Input
Position on page 76).
• Adjust the Sync Threshold
setting (refer to Sync
Threshold on page 95).
Computer images do not dis-
play correctly. • The resolution and
frequency of the video
card in the computer are
not compatible with the
D-73d.
• Select a compatible
resolution and vertical
frequency (refer to
Supported Timings on
page 130).
Table 5-1. Troubleshooting Chart (continued)
Symptom Possible Cause(s) Solution