Troubleshooting
SNLUS
800 Service
Manual
5.5 UNIT REPAIR - PRINTER MECHANISM (M-4810)
Troubles related to the printer mechanism should be repaired according to the troubleshooting
procedures in Table 5-7.
Table
5-7.
Repair of Printer Mechanism
Symptom
Condition
Cause
Checkpoint
Solution
Foreign
Manually drive the gear
substances are
Remove any
The pump
The
PF motor
train
conneoted
to the
foreign
mechanism
fails
to rotate at lodged in the gear
pump
meohanism
to check
sub~ance
does not
time of power
in the mechanism. if the motor rotates.
operate.
on.
The PF motor is
Check the coil resistance Replace the
defective. of the motor.
PF motor.
The tube is not
Check that the tube is
properly Set the tube
connected to the
properly connected to the
cap.
properly.
cap.
Used ink does
The ink tube is Replace the
damaged.
Cheek the ink tube visually.
tub
Ink is not
not go through
absorbed or
the used ink
The cap is
Cheek for any defective Replace the
poorly
tube during the defective.
part.
head cap.
absorbed.
cleaning
Replace the pump to see if
operation.
The pump is
this causes the ink to be
Replace the
defective.
absorbed normally.
pump unit.
The
printhead
is
Replace the
printhead
to
Replace the
defective.
see if this
oauses
the ink
to be absorbed normally.
printhead.
Foreign
substances are
Manualty
drive the timing
Remove any
The
carriage
The carriage
belt to see if the carriage
lodged in the gear
motor
~tates
foreign
motor does not
motor fails to
rotate at
time
of
in the mechanism.
substance.
rotate.
power on.
The carriage Measure the coil Replace the
motor is defective.
resistance of the CR motor.
csrriige
motor.
The pulley is Cheek for broken or worn Replace the
defective.
pulley.
driien pulley.
The carriage
The carriage
Check that the timing belt
does
not
motor rotates,
Reinsert the
but the carriage
The timing belt is
is properly inserted into
Jperate
the bottom of the carriage.
timing belt.
7ormally
at time
does
not
move”
defective.
Check the timing belt for
3f
power on.
Replace the
~after
the
any darnage.
timing belt.
>arriage
has
Check whether the
]een
manually
Clean and
The carriage
carriage moves smoothly
:entered
prior
Carriage
lubricate.
when moved manually.
o power on).
moves slightly
movement is not
and then stops. smooth.
Check tension of the
Adjust tension
timing
bett.
of the timing
belt.
(
‘
-----
,..
..-
(“
!.
‘\
.,
5-12
Rev.
A
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