Read Sharp LC-40LU700E (serv.man9) Service Manual online
LC-32/40/46LE700E/RU/S,LU700E/S,LX700E/RU,LC-52LE700E/RU/S
6 – 18
LCD failure (1)
Does a single or several
vertical stripes appear
on the LCD screen?
vertical stripes appear
on the LCD screen?
Does a single or several
horizontal stripes appear
on the LCD screen?
horizontal stripes appear
on the LCD screen?
Do luminescent or black
dots appear on the
screen?
dots appear on the
screen?
Is the on-screen image
rippling or distorted?
rippling or distorted?
Is there any portion
which some screens
were darkish or
became whitish?
which some screens
were darkish or
became whitish?
Replace the LCD panel.
LCD failure (2)
The backlight func-
tions. Does not the
image come out in the
LCD screen
(screen black)?
tions. Does not the
image come out in the
LCD screen
(screen black)?
Does the entire LCD
screen look whitish all
over?
screen look whitish all
over?
Does the QS drive func-
tion?
tion?
Are the data bit drop-
out?
(No solution even when
turning on and off the QS
drive)
out?
(No solution even when
turning on and off the QS
drive)
Is the gamma correc-
tion as specified?
tion as specified?
Replace the LCD_CONT_UNIT.
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