Hitachi 42PD580DTA user manual Symptom Point to check See

TROUBLESHOOTING (continued)

Symptoms That Seemingly Appear to be Failures (continued)

Symptom	Point to check	See page
• There are locations on the screen that are different from the • High-precision technology is used to manufacture the
periphery (*).	plasma display panel, However in some cases, there are
*Points that do not light, points with brightness different from	minor defects in some parts of the screen. Please note that	-
that of the periphery, points with color different from that of	this is not a malfunction.
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.	31
	(PC RGB input)
• Flickering in the form of horizontal lines oscillating up and	• If the direct frequency from the computer is below 85Hz, try
down. (PC RGB input only)	a higher frequency (upper limit 85Hz). There may be a	51
	slight attenuation of the current image.
• 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.
• The screen becomes dark and the images can not be seen • This sometimes occurs when a component output VTR
during VTR special playback (fast forward, rewind)	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.
• During PIP mode, sub pictures are not displayed.	• Sub pictures image might not be able to be displayed,
	depending on the combination.	15
	(Refer to the table of PIP input table)
• The screen display sizes are not switched.	• The screen display size is fixed at “Full” as receiving VGA	-
	signal.
• Images from HDMI are not displayed.	• Check the cable and output format of connecting device.	20
	(Refer to “Connecting to an Audio Visual Device”.)	21
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