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Abnormal
Color
Abnormal
Color
Failure Mode
Part
Name
Mechanlcal
Nolse
Ripple
B/L off
B/L dark
B/L
wire
damaged
B/L
wire
open
B/L
shut
down
F/M
Failure Mode
Part
Name
Only
color
abormal
Only
color
abnormal
Description
When
turn
panel,appear
cacophony
Connectric circle
B/L lose action
B/L
brightness
darker than normal
B/L wire damaged
Without backlight
B/L shutdown in
sometime
F/M
in
B/L
,white,balck
Rotundity
or
wirelike
Description
Capacitance improper bring crosstalk inside LCD
pannel
1. Chip lose action
2. IC short or jointion bad
3. Pannel and vsc connect bad
Phenomena
Caused by Mechanica noise of backlight
unit
Causeed by between mechanism and
pannel
*Connect badness between wire and
electrode
*Connect badness
Short between wire and electrode
Operation abnormal or systemic noise
Operation abnormal or systemic noise
Short bitween lamp housing and wire, Because
consume power too much
F/M in B/L unit
Phenomena
46
Failure cause
Failure cause
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