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Maintenance and Troubleshooting
58 CX-70DHD Installation/Operation Manual
PRE
L
IMINAR
Y
The CX-70DHD and DHD
Controller are both on, but
there is no picture and
on-screen menus do not
appear.
• Faulty or incorrect video
connection between the
DHD Controller and the
CX-70DHD.
• Ensure that the HDMI
output from the DHD
Controller is properly
connected to the
DVI IN
input on the CX-70DHD
(see Figure 3-4).
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
source component to DHD
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
DHD Controller.
• Ensure that the source
outputs are connected to
the correct DHD Controller
input.
RGB-HD images appear
“noisy.”
• Tracking and Phase
settings need adjustment.
• Adjust Tracking and Phase
settings (refer to Input
Position on page 45).
Computer images do not dis-
play correctly.
• The resolution and
frequency of the video
card in the computer are
not compatible with the
CX-70DHD.
• Select a compatible
resolution and vertical
frequency (refer to
Supported Timings on
page 70).
The image is too large or too
small.
• Image size needs
adjusting.
• Adjust the image size (refer
to
Input Position on
page 45 or Output Shift
on page 51).
Table 5-1. Troubleshooting Chart (continued)
Symptom Possible Cause(s) Solution