Failure Mode
Part
Name
Description
Phenomena
Failure cause
Mech
a
nlc
a
l
Nolse
When
turn p
a
nel,
a
ppe
a
r
c
a
cophony
C
a
used
b y M e c h
a
n i c
a
noise o
f
b
a
c
k
light
unit
Ripple
Connectric circle
C
a
useed by
between
m
ech
a
nis
m
a
nd
p
a
nnel
B/L o
ff
B/L
lose
a
ction
*Connect
b
a
dness
between wire
a
nd
electrode
B/L d
a
r
k
B / L b r i g h t n e s s
d
a
r
k
er th
a
n
nor
ma
l
*Connect
b
a
d n e s s
S
h o r t
between wire
a
nd
electrode
B/L
wire d
ama
ged
B/L
wire d
ama
ged
Oper
a
tion
a
bnor
ma
l
or syste
m
ic noise
B/L wire open
Without b
a
c
k
light
Oper
a
tion
a
bnor
ma
l
or syste
m
ic noise
B/L shut down
B/L shutdown in
so
m
eti
m
e
S
h o r t b i t w e e n
l
am
p housing
a
nd
w i r e , B e c
a
u s e
consu
m
e power
too
m
uch
F/M
F/M
inB/L ,white,b
a
lc
k
Rotundity
or wireli
k
e
F/M in B/L unit
S
ervice M
a
nu
a
l
Model No.:
- 53 -
