TROUBLESHOOTING (continued)

Symptoms That Appear to be Failures (continued)

Symptom

Point to check

See page

 

 

 

• The temperature of the display panel surface is high.

• Plasma display panel is lighting the phosphors in the display

 

 

panel by the discharge of internal radiation. In some cases, this

 

 

may cause the temperature of the panel surface to increase.

-

 

Please note that this is not a malfunction.

 

 

 

 

• There are points (*) on the screen that differ in color from

High-precision technology is used to manufacture the plasma

 

the periphery of the screen.

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 radiation. Depending on the screen

 

contents, in rare cases this may cause vertical stripes to appear

-

 

because of failure 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.

21

 

(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

21

(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 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; however,

-

 

this is not a malfunction.

 

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Yamaha pdm-4210 user manual Troubleshooting Symptoms That Appear to be Failures