TROUBLESHOOTING (continued)
Symptoms That Appear to be Failures (continued)
Symptom | Point to check | See page |
|
|
|
• The temperature of the display panel surface is high. | • The plasma display panel is lighting the phosphors by the |
|
| discharge of internal energy. In some cases, this may cause the | - |
| temperature of the panel surface to increase. Please note that this | |
|
| |
| is not a malfunction. |
|
|
|
|
• There are locations on the screen that are different from the | • |
|
periphery (*). | display panel. However in some cases, there are minor defects in |
|
*Points that do not light, points with brightness different | some parts of the screen. Please note that this is not a | - |
from that of the periphery, points with color different from | malfunction. |
|
that of the periphery, etc. |
|
|
•Vertical stripes appear, depending on the screen contents. • The plasma display panel is lighting the phosphors by the discharge of internal energy. Depending on the screen
| contents, in rare cases, this may cause vertical stripes to appear | - |
| because the phospors fail to light. Please note that this is not a |
|
| malfunction. |
|
|
|
|
• Coarse horizontal stripes appear in FULL display. | • Adjusting the Clock Phase will reduce the horizontal stripes. | 23 |
| (RGB input) | |
|
|
|
• Flickering in the form of horizontal lines oscillating up and | • If the direct frequency from the computer is below 85Hz, try a |
|
down. | higher frequency (upper limit 85Hz). There may be a slight | 23 |
(PC INPUT MODE only) | attenuation of the current image. | |
| • Try turning the Vertical Filter On. For this case however, the |
|
| vertical resolution will drop. |
|
|
|
|
• The fan motor is noisy. (Only for models with fan.) | • The fan lowers the temperature of this unit. If the ambient air |
|
| temperature increases, the fan RPMs increase and motor | - |
| noise increases. This is not a malfunction. | |
|
| |
|
|
|
• The top of the monitor heats up. | • When used for long periods of time, the top of the monitor may | - |
| heat up. This is not a malfunction. | |
|
|
|
• Text characters are displayed with varying thicknesses. | • The thicknesses of characters and lines may vary if images with a |
|
| vertical resolution greater than 512 lines are displayed. | - |
| This is not a malfunction. |
|
ViewSonic VPW4255 28
