marathon
/llutti6oo
"SE" displayed
C
h
ec
k if
the
m
oto
r k
eeps
running
eve
n
after
turning
off
the
run
sw
it
c
h
.
Turn
off
and then
o
n
again the power.
If
th
e
same error
is
still
displa
y
ed
,
r
epa
ir it.
Th
e
foot pedal does
n
ot
wo
rk.
Make sure rhar
the
foot
pedal
co
rd i
s
properly plugged.
Plug the foot
p
e
dal
co
rd
correc
tl
y.
Check
if the
auto
c
ruis
e
switch
LED i
s o
n.
If
not turned
on, then repair
it.
Make
s
ur
e
in
the
maint
e
nan
ce
mod
e
char the
"Fe"
for
th
e
foot
pedal
c
h
ec
k i
s
appropriate.
If
the pedal
i
s
defective,
r
epa
ir
o
r
replace
w
ith ne
w
one.
The knee
co
ntrol panel
does not work properly.
Make sure
in
the maintenance
m
ode
that the "nc"
fo
r th
e
knee
co
ntrol panel is proper.
If
the knee control
panel is not
working properly,
r
eset
it in th
e
magnet sensor
res
et
mod
e.
If
th
e
sa
m
e e
rr
o
r i
s st
ill di
s
pla
ye
d
,
then
repair
th
e contro
l unit.
The motor
handpiece
i
s over
h
eate
d
while
in
operation.
The ball
b
ear
in gs
are defective.
Repa
ir
the motor
handpie
ce.
Th
e
m
oto
r handpi
ece
is
exces
i
sv
el
y
v
ibrat
e
d
a
nd
with
se
ri
o
u
s
nois
e.
Make
s
ur
e
that the
co
ll
et c
huck
is
free from dirt.
Th
oro
u
g
hl
y
clean
th
e ca
ll
er c
huck
after
disasembled.
Check
if the
specified
test
bur/
polishing point
i
s
u
sed.
For
high
speed, use
the
specified
test
bur/p
o
li
s
hin
g
point
o
nl
y.
Check
if
the test
bur
/po
lishing
p
o
int i
s
bent.
Replace with
ne
w
one.
Make
s
ur
e
that
th
e
ball
beating
is in
good
con
diti
o
n.
R
epa
ir th
e
m
oto
r h
a
ndpi
ece.
The test bur/polishing
p
o
int is rel
eased.
C
h
ec
k if
the
co
ll
et c
hu
c
k i
s
lo
ose
.
Ifl
oose,
tighten the
co
ll
et c
hu
c
k.
