Yamaha PDM-4210E Manuel Utilisateur page 26

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TROUBLESHOOTING (continued)
Symptoms That Appear to be Failures (continued)
Symptom
• The temperature of the display panel surface is high.
• There are points (*) on the screen that differ in colour from
the periphery of the screen.
*Points that do not light, points with brightness different
from that of the periphery, points with color different from
that of the periphery, etc.
• Vertical stripes appear, depending on the screen contents.
• Coarse horizontal stripes appear in FULL display.
• Flickering in the form of horizontal lines oscillating up and
down.
(PC INPUT MODE only)
• The fan motor is noisy. (Fan application model only)
• The top of the monitor heats up.
• Text characters are displayed with varying thicknesses.
Point to check
• 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.
• High-precision technology is used to manufacture the plasma
display panel, However in some cases, there are minor defects in
some parts of the screen. Please note that this is not a
malfunction.
• 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.
• Adjusting the Clock Phase will reduce the horizontal stripes.
(RGB input)
• If the direct frequency from the computer is below 85Hz, try a
higher frequency (upper limit 85Hz). There may be a slight
attenuation of the current image.
• Try turning the Vertical Filter On. For this case however, the
vertical resolution will drop.
• Use the fan that controls the temperature in the main body to lower
the temperature of this unit. If the ambient air temperature
increases, the fan will start, the RPMs will increase and motor
noise will grow louder. This is not a malfunction though.
• When used for long periods of time, the top of the monitor may
heat up. This is not a malfunction.
• 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.
See page
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