Haier HL22FG1 Service Manual page 49

B/L wire
open
B/L shut
down
F/M
Failure Mode
Part Name
Light
leakage
Mechanlcal
Uniformity
or B/L
Mount hole
Without backlight
B/L shutdown in
sometime
F/M in
B/L ,white,balck
Rotundity or
wirelike
Description
Brightness at
bottom of LCM
brighter than
normal
B/L brightness
asymmetric
Lack screw or
screw damage
Operation abnormal or systemic noise
Short bitween lamp housing and wire, Because
consume power too much
F/M in B/L unit
Phenomena
B/L unit badness
Sheet in B/L unit is uneven
*Lack screw
Screw damage
49
Failure cause