Videocon LEDTVVKC22FH-ZMA, Руководство по обслуживанию

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***VIDEOCON CONFIDENTIAL***
Part Name Description Phenomena Failure cause
Circuit
White Screen B/L normal,
only white screen
display
M a y b e c a u s e d
by surge current
and EDS
Black Screen B/L normal,
only Black screen
display
FIIcker Crosstalk
LCD
Vcom imbalance
Abnormal Color Only
color abormal
Capacitance
i m p r o p e r b r i n g
crosstalk inside
LCD pannel
Abnormal Color
Only
color abnormal
1.Chip
lose action
2 . I C s h o r t o r
jointion bad
3.Pannel and vsc
connect bad
Part Name Description Phenomena Failure cause
Mechanlcal
Nolse When
turn panel,appear
cacophony Caused
b y M e c h a n i c a
noise of backlight
unit
Ripple Connectric circle Causeed by
between
mechanism and
pannel
B/L off B/L lose action *Connect
badness
between wire and
electrode
B/L dark B / L b r i g h t n e s s
darker than
normal *Connect
b a d n e s s S h o r t
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 S h o r t b i t w e e n
lamp housing and
w i r e , B e c a u s e
consume power
too much
F/M F/M
inB/L ,white,balck
Rotundity
or wirelike F/M in B/L unit
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