Hitachi CLE-971 User Manual page 38

TROUBLESHOOTING (continued)
Symptoms That Seemingly Appear to be Failures (continued)
Symptom
• There are locations on the screen that are different from the
periphery (*).
*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. • The plasma display panel is lighting the phosphors by the
• Coarse horizontal stripes appear in FULL display.
• Flickering in the form of horizontal lines oscillating up and
down. (PC RGB input only)
• The top of the monitor heats up.
• Text characters are displayed with varying thicknesses.
• The screen becomes dark and the images can not be seen
during VTR special playback (fast forward, rewind)
• During PIP mode, sub pictures are not displayed.
• The screen display sizes are not switched.
• Images from HDMI are not displayed.
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Point to check
• 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.
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.
(PC 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.
• 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.
• This sometimes occurs when a component output VTR
such as the 480i is connected.
This is not a malfunction; therefore, please take note that
this may occur. When it does occur, change to composite
output, or S-video output.
• Sub pictures image might not be able to be displayed,
depending on the combination.
(Refer to the table of PIP input table)
• The screen display size is fixed at "Full" as receiving VGA
signal.
• Check the cable and output format of connecting device.
(Refer to "Connecting to an Audio Visual Device".)
See page
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