Hitachi P50H4011 Operating Manual page 57

1. Plasma Television Troubleshooting
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Items
Buzzing sound from Plasma
display panel.
Infrared interference
Bright and dark spots
Picture Image
Display panel surface
temperature is too high.
Plasma Surface
Notes
A buzzing sound may be heard when the plasma television is turned on in a very quiet
room. This is due to the plasma panel drive circuit when it is functioning. The buzzing
sound is normal and is not a malfunction.
Some infrared rays are emitted from the plasma television panel that might affect the
operation of other infrared controlling equipment.
High precision technology is used to manufacture the plasma television. But there
maybe points that do not illuminate, points that are too bright, and points with color
different from that of the periphery. Please note that this is not a malfunction.
In some cases, residual images may remain after the short term display of still images
when the picture changes.
The plasma display panel display images by means of electrical discharges inside the
3anel. This may cause the temperature of the panel surface to increase. Please note that
this is not a malfunction.
A reinforced glass filter is installed over the plasma panel surface. A strong impact to
the front panel risk a danger of glass breakage.
Please transport the plasma television in it's packing box and placed in an upright
Transportation 3osition. Do not transport the plasma television in a horizontal position. This increases
the posibility of panel breakage and pixel failure.
When a screen is seen at point-blank range, a random fine grain may be visible in the
Granular spots dark areas of the picture.
High temperature High temperature affect the electric discharge/luminescence characteristic of the PDP
environment 3anel. Do not place the plasma television in high temperature environments.
Operating altitude: 700 to 1,114hPa (9,676ft to -2,484ft). Operating temperature: 41°F
Operation to 95°F.
Storage altitude: 300 to 1,114hPa (31,912ft to -2,484ft). Storage temperature: 5°F to
Storage 140°F
Repeatedl_ turningthe plasma television Power ON and OFF at short intervals may
Power ON or OFF result in failure of the television.
The on-screen motion of an actor's lips or other moving object may not be in sync with
Lip sync the associated audio heard from the TV's speakers. This is caused by timing differences
in the broadcast signal or DVD content and is not caused by a defect in the television.
Control Buttons There's a few seconds response delay on the control buttons (Control panel or R/C) after
Response Delay the TV is turned ON; due to TV start-up routine. Please note that this is not a TV malfunction.
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