Epson SQ-1170 Service Manual page 145

REV.-A
5.5 REPAIR OF THE PRINTER
Troubles related to the printer mechanism
procedures in Table 5-7.
Symptom
The pump motor
The pump motor
does not rotate. fails to rotate at
time of power on.
Ink is not absorbed
Used ink does not
or poorly absorbed. go through the
used ink tube dur-
ing the cleaning
operation.
The carriage motor
fails to rotate at
time of power on.
MECHANISM
should be repaired according to the troubleshooting
Table 5-7. Repair of Printer Mechanism
Condition Cause
Foreign substances
are lodged in the
gear in the
mechanism.
The pump motor is
defective.
The tube is not
properly connected
to the cap.
The ink tube is
damaged.
The cap is
defective.
The pump is
defective.
The printhead is
defective.
Foreign substances
are lodged in the
gear in the
mechanism.
The carriage motor
is defective.
Checkpoint
Remove any for.
Manually drive the
gear train connect-
ed to the pump
motor to check if
the motor rotates.
Check the coil re- Replace the pump
motor.
sistance of the
motor.
Check that the Set the tube
properly.
tube is properly
connected to the
cap.
Check the ink tube Replace the tube.
visually.
Check for any de- Replace the head
cap.
fective part.
Replace the pump Replace the pump
unit.
to see if this caus-
es the ink to be ab-
sorbed normally.
Replace the print- Replace the
head to see if this
causes the ink to
be absorbed
normally.
Remove any for-
Manually drive the
timing belt to see
if the carriage mo-
tor rotates.
Measure the coil Replace the car-
riage motor.
resistance of the
CR motor.
Solution