Runco CX-57HD, CX-52HD manual Maintenance and Troubleshooting, Cleaning, Troubleshooting Tips

5. Maintenance and Troubleshooting

Regular cleaning will extend the life and performance of the Crystal Series LCD. Before cleaning, be sure to unplug the power cord from the power outlet.

Do not under any circumstances use solvents such as benzene or thinner to clean the Crystal Series LCD. Doing so may cause deterioration or peeling of paint from the display or remote control unit.

Wipe the display and remote control gently with a soft cloth. In case of excessive dirt buildup, dampen a soft cloth with a diluted neutral cleaning detergent. Wring the cloth thoroughly, then wipe the component and dry it with a dry soft cloth.

5.1 Cleaning

Cleaning the Display

Panel Body and Remote

Control

After dusting, wipe the screen gently using a soft cloth (cotton, flannel etc.). Do not use tissue or coarse fabric. The screen surface is easily scratched; do not rub it or hit it with a hard object.

If you clean the surface of the screen with a wet cloth, do not allow water droplets on the surface to enter into the product; this may cause a malfunction.

As a general rule, use a vacuum cleaner about once a month to clean the vents on the rear panel of the display of dust buildup (set the vacuum cleaner to its weakest setting when doing this). If not removed, accumulated dust can cause the internal temperature to increase, resulting in possible breakdown or fire.

Table 5-1provides some general guidelines for troubleshooting problems you may encounter with the Crystal Series LCD. If the suggested solutions fail to resolve the problem or if you encounter an issue not described here, please contact your Runco dealer or Runco Technical Support.

Table 5-1. Troubleshooting Chart

Symptom		Possible Cause(s)		Solution
The display does not turn on	•	The Crystal Series LCD is	• Ensure that the Crystal
after initial installation.		not plugged in or the AC		Series LCD is plugged in
		outlet is not active.		and that the AC outlet is
				active.
	•	The remote control	•	Replace the batteries.
		batteries have run out.
The display is on, but there is	•	Incorrect source selection.	• Select the correct source.
no picture.	•	Source component is not	• Turn on the source
		turned on.		component.
	•	Source component is	•	Check video connections
		connected incorrectly or		to source component.
		not at all.

Cleaning the Screen

Cleaning the Vents

5.2

Troubleshooting Tips

Runco CX-52HD/CX-57HD Owner’s Operating Manual 49