T
R
O
U
BLESHOOTI
N
G GUI
D
E
17 Januar
y,
2003
4-
50
4.
4.2
COLOR
SHI
FT
T
he
fo
llo
w
ing
br
ie
fly
expl
ai
n t
h
e
factor
s c
ausi
ng
col
o
r shi
fts a
nd w
h
at
to d
o
o
n
th
e
machi
ne t
o
cor
re
ct i
t:
•
T
emp
er
atur
e ch
ang
e c
auses
the
op
tical
co
mp
one
nts i
n
the
la
ser
opti
cs h
ousi
n
g u
n
it t
o
c
o
ntr
a
ct,
causi
n
g the
m
a
in
sca
n
mag
n
ifi
cati
on t
o
ch
ang
e.
T
o
c
o
rr
e
ct th
e l
in
e p
o
si
tion,
the
m
a
chi
ne
auto
m
at
ic
al
ly
does t
he
line posi
tion
adj
ust
m
en
t w
hen th
e
tem
per
at
ur
e ch
ang
e
s
by
5
°
C
si
nce th
e l
a
st
p
o
si
tion
adj
ust
m
en
t.
If th
e l
ine
posi
tio
n a
d
ju
stme
nt
functi
on
s pr
ope
rl
y,
no col
o
r s
h
ift
occur
s. I
f
the
li
ne
posi
tion a
d
ju
st
me
nt
fai
ls
(
re
sul
t: SP
5-
99
3-
00
7)
,
col
o
r l
ines
may
shi
ft
an
yw
her
e on th
e o
u
tp
uts.
•
T
he pr
oc
ess sp
ee
d at
each s
tag
e (
re
gi
str
a
tio
n
r
o
lle
r,
tr
ans
fer
b
e
lt,
and
fusi
ng
b
e
lt/r
ol
le
r)
a
ffects t
he
pa
per
tr
an
sp
or
t spe
ed.
If
the
pap
er
tr
ans
por
t sp
ee
d
chang
es
dur
in
g i
m
ag
e
tr
ans
fer
o
f a
col
o
r,
the c
o
lo
r l
ine
bei
ng
tr
an
sf
er
red s
h
ifts w
ith r
e
spect t
o
th
e c
o
lo
r l
in
e
al
ready
tr
ans
fer
red t
o
the p
a
pe
r.
T
h
e r
e
gi
str
a
tion r
o
lle
r sp
eed
(adj
uste
d by
col
o
r d
e
ve
lo
pm
en
t mot
o
r spe
e
d)
and
fusi
ng
bel
t/r
ol
le
r
spee
d (
adj
us
ted
by
bl
ack dev
el
op
men
t mot
o
r spee
d)
ar
e
adj
u
st
ed
b
y t
h
e
ma
nuf
a
ctu
re
r.
Paper
s
p
ee
d
may
sl
ig
htl
y chang
e du
e to
th
e t
ype o
f p
aper
used
or
af
ter
r
epl
aci
n
g th
e p
a
rt
s r
e
la
ted
to
the
dr
iv
e secti
ons
of
th
e
re
gi
str
a
tion secti
on, tr
an
spor
t uni
t,
an
d
fu
si
ng
uni
t. (
A
fter
r
e
pl
aci
n
g
the
fusi
ng
uni
t, th
e sp
eed a
d
ju
st
me
nt sh
oul
d
be d
o
ne
in
the U
ser
Pr
og
ra
m m
o
de
.)
Al
so,
the
posi
tio
n w
her
e col
or
shi
ft
occur
s
dep
ends
on
w
h
ic
h sect
ion star
ts
m
o
vi
ng
at th
e i
n
cor
re
ct s
p
ee
d.
•
Paper
sk
ew
di
re
ctl
y affects th
e col
o
r shi
ft
bet
w
e
en the
fr
ont
an
d
rear
si
des.
Ther
e
ar
e s
e
ve
ra
l f
a
ct
or
s. O
ne
of
them
is
th
e p
o
si
tion
of
t
he
s
ide
f
en
ce
s.
G080T
90
2.
W
M
F
T
he c
olor
de
ve
lopm
ent m
otor
dr
iv
es
the r
eg
is
tr
at
ion r
o
ller
s,
an
d
the
m
otor
s
peed is
adj
us
ta
bl
e i
n S
P
m
ode.
T
he blac
k deve
lopm
ent m
otor
dr
iv
es
the r
eg
is
tr
at
ion r
o
ller
s,
an
d
the m
otor
speed
is
adj
us
ta
ble
in
S
P
m
ode.
T
he blac
k dr
um
m
otor
dr
ive
s
the r
eg
is
tr
at
ion r
o
ller
s,
an
d
the m
otor
s
peed
is
no
t
adj
us
tab
le.