5. Maintenance and Troubleshooting
Regular cleaning will extend the life and performance of the Crystal Series LCD Display. 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 Display. 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
Table 5-1. Troubleshooting Chart
Symptom |
| Possible Cause(s) | Solution |
|
|
|
|
The display does not turn on | • | The Crystal Series LCD | • Ensure that the Crystal |
after initial installation. |
| Display is not plugged in or | Series LCD Display is |
|
| the AC outlet is not active. | plugged in 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 or sound. | • | Source component is not | • Turn on the source |
|
| turned on. | component. |
| • | Source component is | • Check video and/or audio |
|
| connected incorrectly or | connections to source |
|
| not at all. | component. |
|
|
|
|
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. | |
|
|
|
|
Cleaning the Screen
Cleaning the Vents
5.2
Troubleshooting Tips
Runco | 47 |