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Mechanlcal
Nolse
When turn
panel,appear
cacophony
Caused by Mechanica noise of backlight
unit
Ripple Connectric
circle
Causeed by between mechanism and
Panel
B/L off
B/L lose action
*Connect badness between wire and
electrode
B/L dark
B/L brightness
darker than normal
*Connect badness
Short between wire and electrode
B/L wire
damaged
B/L wire damaged
Operation abnormal or systemic noise
B/L wire
open
Without backlight
Operation abnormal or systemic noise
B/L shut
down
B/L shutdown in
sometime
Short between lamp housing and wire, Because
consume power too much
F/M
F/M in B/L ,white,
back Rotundity or
wire like
F/M in B/L unit
Failure Mode
Part Name
Description Phenomena
Failure
cause
Light
leakage
Brightness at
bottom of LCM
brighter than
normal
B/L unit badness
Uniformity
B/L brightness
asymmetric
Sheet in B/L unit is uneven
Mechanlcal
or B/L
Mount hole
Lack screw or
screw damage
*Lack screw
Screw damage
Содержание HLC26B-B
Страница 8: ...3 2 2 Connector definition Power connector CNA1 MTk5380 ...
Страница 15: ......
Страница 16: ......
Страница 17: ......
Страница 18: ......
Страница 21: ...Power source Removing the table stand and installing a wall mount bracket ...
Страница 31: ...3 Audio 4 Channel 5 Gamma ...
Страница 32: ...6 BackLight 7 Function ...
Страница 33: ...8 BLOCK DIAGRAM AND CIRCUIT DIAGRAM 8 1 BLOCK DIAGRAM 8 2 CIRCUIT DIAGRAM MTK5380 ...
Страница 49: ...9 WIRING CONNECTION DIAGRAM 10 TROUBLE SHOOTING GUIDE 10 1 Simple check 10 1 1 LCD is not bright ...