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-18-
CAUSE
LEVEL
CHECK POINT & METHOD
REPAIR METHOD
The
power
suppl
y
input
to the
carri
a ge
B
•
Referring to
Fi
g
.
2-9 (Page 16),
•
Check the
input
side of the power
motor or paper feeding motor is
faulty.
check the
input
voltage, conduction
supply and perform
repair.
pulsewidth,
and
cycle.
7) SYMPTOM:
Imperfectl
y
formed characters
STATUS:
Plotted images or characters are disorderly and
deformed.
CAUSE
LEVEL
CHECK POINT & METHOD
REPAIR METHOD
1.
The power
suppl
y
i
n put to a dot
B
•
Referring
to
Fig.
2-8
(Page 16),
•
Replace the
head
unit
.
head is abnormal.
check the conduction
pulsewidth,
voltage,
and cycle of the pertinent
dot head.
2.
The platen
gap
is incorrectly
adjust-
c
•
Check if the
gap between
the head
•
Re-adjust the platen gap
.
ed.
and platen is the correct
distance.
3.
A head wire is worn or
damaged.
B
•
Perform a visual check of the
pertin-
•
Replace the head unit
.
ent head
wire.
4. The
ink
supply
has
run out.
A
•
Plot
a
few lines
and
check
if normal
•
Repl
a
ce
the ink cartridge
unit .
printing
is
restored.
6) SYMPTOM:
Missing
dots
STATUS:
There are missing
dots within the
plotted
image.
~··
CAUSE
LEVEL
CHECK POINT & METHOD
REPAIR METHOD
1.
An FPC lead is
broken.
B
•
Referring to
Fig.
2-8 (Page 16),
•
Replace
the head unit.
check the conductivity between the
pertinent head
coil
terminal
s
.
2.
A head coil lead is
broken.
B
•
Check
the
conductivity
between the
•
Replace the head unit.
pertinent head
coil
terminals.
3. The ink supply has run out.
A
•
Plot a few l
i
n es to check if the dark-
•
Replace the i
n
k cartridge
unit.
ness of the
pl
o tting
returns
to nor-
mal.
4. The ink
supply
is stopped
up.
A
•
Check if paper
dust
or other
parti
-
•
Mount the recovery cartridge
on the
cles have collected
on
the
i
n k
adhe-
head unit, then perform printing un-
sion guide section of the head
unit.
til
pri
n ting
returns to normal.
5.
The ink
of
the head
uni
t
has
dried
A
•
lnslall a new ink cartridge
unit,
plot
•
Perform recovery using the recovery
up.
a few lines and check if normal
cartridge.
printing is
restored.
5) SYMPTOM:
A
specifi
c
color is not printed
STATUS: Despite normal operation of the motor and
carriage,
a specific
color
is not printed or plotting is
faint.
CAUSE
LEVEL
CHECK
POINT
&
METHOD
REPAIR METHOD
1.
A lead of the reset detector unit is
B
•
Referring to
Fig.
2-9 (page 16).
•
Repl
a ce the reset detector unit.
broken or the conductivity to the
check both the input voltage
bet-
connector section is
faulty.
ween the
terminal
s of the reset
de-
tector and the
conducti
v ity to the
connector
section.
2. The contact of a reset detector ter-
B
•
Check the
conductivi
t y between re-
•
Clean
the reset detector terminals
minal is faulty due to
dirt,
lint or de-
set detector
terminal
s
.
or replace the reset
decector.
formation.
4) SYMPTOM:
Head
unit does
not stop at
home
posit
ion
STATUS: When the printer
is powered,
the head
unit
moves
in
the
positive x-axis
direction
but does
not stop at home posi-
tion.
..
CE-140P
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