Hitachi CMP4212 Owners Guide - Page 28
TROUBLESHOOTING continued, Symptoms That Seemingly Appear to be Failures continued
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TROUBLESHOOTING (continued) Symptoms That Seemingly 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 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 locations on the screen that are different from the • High-precision technology is used to manufacture the plasma 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 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. (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 (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. (Fan application model only) • 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. • 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.