Epson 4003353 - Manual (Page 110)

5.5 UNIT REPAIR -PRINTER MECHANISM (M-4A1O)
Any problems related to printer should be repaired
troubleshooting in Table
Table 5-7. Repair of the Mechanism
Symptom Condition cause
solution
Foreign drive the gear
The pump The PF motor
substances are
mechanism
to lodged in the gear pump mechanism to check
does not time of power
of 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
connected to the
properly connected to the
.
The ink tube is Replace the
the ink tube
Ink is not
damaged.
not through
or the used ink Check for any defective Replace
is poorly tube during the defective. head cap.
absorbed. cleaning
Replace the pump to
operation. The pump is
defective.
causes the ink to be
normally.
pump unit.
The is
Replace the to
see if this causes the ink to
Replace
defective.
be absorbed normally.
Foreign
Manually drive the timing Remove any
The carriage
substances are
belt to see if the carriage foreign
fails lodged in the gear
rotate at time of
.
not rotate.
power on.
The carriage Measure the coil Replace the
motor is defective. resistance the CR motor .
The pulley is Check for broken or worn Replace the
defective. pulley. driven
The
does not the timing
operate
motor rotates,
inserted into*
but the is carriage.
normally at
defective.
time of power
Check the timing belt for
on (after the
Replace the
carriage has
any damage. timing belt.
been Check whether the
manually moves smoothly lubricate the
centered The carriage Carriage
when moved manually.
prior to slightly movement is not
power on). and then stops. smooth.
Check tension of the
Adjust tension
timing belt.
of the timing
belt.
.,
-.’
Rev. A