Epson SQ-1170 Service Manual page 147

Symptom
Abnormal printing. A particular dot is
not printed.
A dot is not print-
ed occasionally.
Printed characters
are not aligned.
The intervals be-
tween the charac-
ters are irregular.
Print at the sides is
abnormal.
Vertical line is not
aligned.
Table 5-7. Re~air of Printer Mechanism (Cont.)
Cause
Condition
Front of the print-
head is not clean.
The head cable is
disconnected.
The printhead is
defective.
Front of the print-
head is not clean.
The expiration of
the ink cartridge.
Insufficient contact
of the head cable.
The printhead is
defective.
Ink is poorly
absorbed.
The platen gap is
not adjusted.
Head inclination is
not adjusted.
The timing belt is
defective.
The paper gu de is
damaged.
Head inclination is
not adjusted.
5-20
Checkpoint
Perform the clean- Clean.
Check the head ca- Replace the cable.
ble for
disconnection.
Replace the Replace the
Check front of the Clean.
Check the ink car- Replace the ink
expiration.
Check whether the Plug the cale into
cable is properly the connector
properly.
plugged into the
connector.
Check the Clean.
cleanliness.
Replace.
Replace the print-
head to see if this
causes printing to
be performed
normally.
Check whether the See "Ink is not
Absorbed".
used ink goes
through the used
ink tube.
Adjust the gap.
Check the platen
gap.
Adjust the head
inclination.
Set the timing belt
Check that the tim-
properly.
inserted into the
bottom of carriage.
Tension of the tim- Adjust the tension.
adjusted.
Replace or reset
Check the paper
guide. the paper guide.
Adjust the head Adjust the head
inclination.
inclination.
Solution