Service manual

Failure Mode
Part Name Description Phenomena Failure cause
Mechanlcal
Nolse
When
turn panel,appear
cacophony
Caused
by Mechanica
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 brightness
darker than
normal
*Connect
badnessShort
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 bitween
lamp housing and
wire, Because
consume power
too much
F/M F/M
inB/L ,white,balck
Rotundity
or wirelike
F/M in B/L unit
Service Manual
Model No.:
- 62 -