T
R
O
U
BLESHOOTI
N
G GUI
D
E
17 Januar
y,
2003
4-
48
S
ubje
ct
Sy
mptom
Ca
us
e
A
ction
Im
age dens
ity
c
ha
nge
(2
)
Im
age dens
ity
is
t
oo
lo
w
or
hig
h.
If
the m
ac
hine has
n
ev
er
b
een t
ur
ned
of
f
and Ener
g
y Sa
ver
2
(A
u
to O
ff
m
ode)
is
dis
ab
led
, th
e m
ac
hine has
nev
er
per
fo
rm
ed the i
nit
ia
l pr
oc
es
s c
ontr
ol s
e
lf-
chec
k,
c
aus
ing the
im
age d
ens
ity
to
bec
om
e lo
w
or
h
ig
h.
Chan
ge t
he s
ett
in
gs
of
the f
oll
o
w
ing
SP
m
odes
:
SP
3-
906-
0
03 N
on-
us
e T
im
e 1
0 (D
ef
ault) t
o 50
0
SP
3-
906-
0
04 N
on-
us
e T
im
e 2
3
0 (Def
ault)
to 4
80
•
If
Ener
g
y S
av
er
1
is
ac
tivat
ed (
D
ef
aul
t: O
ff
), the
non-
us
e t
im
e pr
oc
es
s c
ontr
ol s
e
lf-
check
w
ill
n
ot
func
tion. T
her
ef
or
e, m
ak
e sur
e tha
t E
ner
g
y
Sa
ver
1
is
O
ff
(
SP5-
101-
3
or
UP m
ode)
.
•
W
ith the a
bo
ve s
ett
in
g, th
e
se
lf-
check
autom
atic
al
ly
s
tar
ts
af
ter
50
0 pr
in
ts
and
af
ter
no
pr
ints
h
av
e be
en m
ade f
or
480 m
inutes
(
8
hour
s)
. Bas
e
d o
n th
e a
ver
a
ge d
ai
ly
pr
int
in
g
vo
lum
e of
500 pr
in
ts
, s
elf
-c
hec
k w
ou
ld b
e
per
fo
rm
ed f
irs
t thing
ev
er
y
m
or
ning. T
hes
e
se
ttin
gs
ar
e s
ui
tab
le f
or
m
ac
hines
,
whic
h
ar
e
us
ed d
ur
ing
the
da
y a
nd t
h
en k
ept O
n i
n Re
ad
y
st
atus
thr
ou
gho
ut t
he n
ig
ht.
T
her
ef
or
e, this
S
P
m
ode s
hould
be s
et
bas
ed
on th
e p
ar
tic
ul
ar
w
a
y
the c
us
tom
er
us
es
the pr
int
er
.
Dir
ty
bac
kg
round
Dir
ty
bac
kg
round
m
a
y
contin
uous
ly
app
ear
o
n th
e
lef
t s
ide (
re
lat
iv
e to
pa
per
feed)
under
ver
y l
o
w
tem
per
atur
e and
hum
idit
y
condit
io
ns
.
W
hen the d
ev
elo
per
h
as
de
ter
ior
at
ed
or
when pr
ints
ar
e
m
ade
in a ver
y lo
w
hum
idit
y c
o
nd
iti
on,
dir
ty
b
a
ck
gr
ound m
a
y
appe
ar
c
ont
inu
ous
ly
.
Per
for
m
f
or
ced toner
r
ef
res
h m
ode (
SP3-
9
21-
0
01
or
002)
.
T
he
m
ac
hine a
utom
atic
all
y
does
th
is
in
th
e
fo
llo
wing s
e
que
nc
e. (
It t
ak
es
about
20 m
inutes
t
o
co
m
plete t
his
m
ode.)
1.
Cons
um
es
toner
in
the
de
ve
lo
pm
ent unit
with
out t
oner
s
u
ppl
y
unt
il t
o
ner
en
d is
d
etec
te
d.
2.
Star
ts
to
ner
r
ec
o
ver
y m
ode
.
3.
Star
ts
pr
oc
es
s c
ontr
o
l s
e
lf-
chec
k.
NOT
E
:
It tak
es
about 2
0 m
inutes
t
o c
om
plete th
is
m
ode, to pr
e
vent
c
ar
rier
f
lo
w
ing
out
.