29

Failure Mode Of Panel

240PW9 LCD

Failure description Phenomenon
Vertical block defect
Vertical dim lines
Vertical lines defect
(Always brightor dark)
Horizontal block defect
Horizontal dim lines
Horizontal lines defect
(Always brightor dark)
Has brightor dark pixel
Polarizer has bubbles
Polarizer has bubbles
Foreign material inside
polarizer. Itshows liner or
dotshape.
Concentric circle formed
Bottomback light of LCD is
brighterthan normal
Back lightun-uniformity
Backlight has foreign material.
Black or whitecolor, liner or
circular type
Quick reference for failure mode ofLCD panel
this page presents problems thatcould be made by LCD panel.
Itis notnecessary torepair circuit board. Simply follow the mechanical
instruction on this manual to eliminate failure by replace LCD panel.