49
B/L wire
open
Without backlight
Operation abnormal or systemic noise
B/L shut
down
B/L shutdown in
sometime
Short bitween lamp housing and wire, Because
consume power too much
F/M
F/M in
B/L ,white,balck
Rotundity or
wirelike
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 HL42XK1
Страница 10: ...CON3 CON4 CON5 ...
Страница 11: ...3 4 LCD Panel 3 4 1 Function Description Display the signal 3 4 2 Connector definition AU T420HW02 V4 ...
Страница 12: ...4 Disassemble and assemble ...
Страница 26: ...7 Electrical parts 7 1 Block diagram 7 2 Circuit Diagram MTK5380L MT8292 TPA3101 ...
Страница 48: ...42 Clean Storage The function could make the model turn back to the factory default setting ...
Страница 54: ......
Страница 56: ...50 Sincere Forever ...