Runco VX-5000d, VX-4000d manual Display Device on

Maintenance and Troubleshooting

Table 5-1. Troubleshooting Chart (continued)

Symptom	Possible Cause(s)		Solution
Image is too bright and/or	• Contrast is set too high.	• Lower the contrast setting.
lacks definition in the bright
areas of the image.
Image appears “washed out”	• Brightness is set too high.	•	Lower the brightness
and/or dark areas appear too			setting.
bright.
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) on	source are connected to		the correct DHD Controller
one or more sources.	the wrong inputs on the		input.
	DHD Controller.
Colors in the image are	• The Red, Green or Blue	• Ensure that the DHD
swapped on all sources.	outputs from the DHD		Controller outputs are
	Controller are connected		connected to the correct
	to the wrong inputs on the		projector input.
	projector.
The projected image is	• The projector is not	• Adjust the projection angle
trapezoidal in shape.	perpendicular to the		or apply keystone
	screen.		correction (refer to
			Display Device on
			page 52).
The projector will not turn	• The projector will not turn	• Wait two minutes until the
back on after it was powered	on for two minutes after		LED at the front of the
down, or the image	power-down, to protect		DHD Controller turns red.
disappears during operation.	the lamp.
	• The lamp has failed or	•	Replace the lamp.
	reached its usage limit of
	2000 hours.

Runco VX-4000d/VX-5000d Owner’s Operating Manual 59