Runco CX-70DHD operation manual To Input Position on

Maintenance and Troubleshooting

Table 5-1. Troubleshooting Chart (continued)

Symptom		Possible Cause(s)	Solution
The CX-70DHD and DHD	•	Faulty or incorrect video	• Ensure that the HDMI
Controller are both on, but		connection between the	output from the DHD
there is no picture and		DHD Controller and the	Controller is properly
on-screen menus do not		CX-70DHD.	connected to the DVI IN
appear.			input on the CX-70DHD
			(see Figure 3-4).
The display is on and menus	•	Incorrect source selection.	• Select the correct source.
appear, but there is no	•	Source component is not	• Turn on the source
picture.		turned on.	component.
	•	Source component is	• Check connections from
		connected incorrectly or	source component to DHD
		not at all.	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.

Colors in the image are swapped; for example, reds appear blue or vice versa.

•Brightness is set too high.

•The Red/Pr, Green/Y or Blue/Pb outputs from the source are connected to the wrong inputs on the DHD Controller.

•Lower the brightness setting.

•Ensure that the source outputs are connected to the correct DHD Controller input.

RGB-HD images appear	•	Tracking and Phase	• Adjust Tracking and Phase
“noisy.”		settings need adjustment.	settings (refer to Input
			Position on page 45).
Computer images do not dis-	•	The resolution and	• Select a compatible
play correctly.		frequency of the video	resolution and vertical
		card in the computer are	frequency (refer to
		not compatible with the	Supported Timings on
		CX-70DHD.	page 70).
The image is too large or too	•	Image size needs	• Adjust the image size (refer
small.		adjusting.	to Input Position on
			page 45 or Output Shift
			on page 51).

58 CX-70DHD Installation/Operation Manual