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Failure Mode
Part
Name
Description
Phenomena
Failure cause
Mechanlcal or B/
L
Light leakage
Brightness
at bottom of LCM
brighter
than normal
B/L unit badness
Uniformity
B / L b r i g h t n e s s
asymmetric
Sheet in B/L unit
is uneven
Mount hole
Lack screw
or screw damage
*Lack screw
Screw damage