Runco CX-52HD, CX-57HD manual Computer Signal

Maintenance and Troubleshooting

Table 5-1. Troubleshooting Chart (continued)

Symptom	Possible Cause(s)		Solution
Picture is okay, but there is no •	Audio output is muted.	• Press the MUTE button
sound.			on the remote control.
• Volume setting is too low.		• Turn up the volume.
•	Source component is	•	Check audio connections
	connected incorrectly or		to source component.
	not at all.
•	Speakers are connected	•	Check speaker
	incorrectly or not at all.		connections (Figure 3-8).
•	Audio settings are	•	Check the following
	incorrect.		settings: Digital Audio Out
			(page 34), TV Speaker
			(page 34) and HDMI Audio
			(page 39).

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.

Black or white dots appear on all channels or a specific channel.

•Brightness is set too high.

•Antenna or cable TV source is connected incorrectly or not at all.

•Broadcast signal is weak.

•Lower the brightness setting.

•Check the antenna or cable TV connection.

•If using an off-air antenna, adjust its position or location.

Colors in the image are	• The Red/Pr, Green/Y or	• Ensure that the source
swapped; for example, reds	Blue/Pb outputs from the	outputs are connected to
appear blue or vice versa.	source are connected to	the correct Crystal Series
	the wrong inputs on the	LCD input.
	Crystal Series LCD.
RGB-HD images appear	• Clock and Phase settings	• Manually adjust Clock and
“noisy.”	need adjustment.	Phase settings, or perform
		an Auto-Adjust (refer to PC
		Mode Adjust on
		page 36).
“Invalid mode” appears	• The resolution and	• Select a compatible
on-screen.	frequency of the video	resolution and vertical
	card in the computer are	frequency (refer to
	not compatible with the	Computer Signal
	Crystal Series LCD.	Compatibility on
		page 61).

The image is too large or too	• Image size needs
small.	adjusting.
Poor broadcast sound quality.	• The sound quality of a
	stereo broadcast may be
	unstable in an area with a
	weak signal.

•Adjust the image size (refer to PC Mode Adjust on page 36).

•Use the MTS/SAP button on the remote control to select mono.

50 Runco CX-52HD/CX-57HD Owner’s Operating Manual