Epson Stylus 1500 - Page 146

Table 5-7. Repair of the Printer Mechanism (Continued)
Symptom Condition Cause Checkpoint Solution
Abnormal
printing.
A dot is not
printed
occasionally.
The printhead is
defective.
Replace the printhead to
see if this causes printing
to be performed normally.
Replace.
Ink is poorly
absorbed.
Check whether the used
ink goes through the waste
ink tube.
See "Ink is not
absorbed."
Printhead
characters are
not aligned.
The platen gap is
not adjusted.
Check the platen gap. Adjust the gap.
The intervals
between the
characters are
irregular.
The timing belt is
defective.
Check that the timing belt
is properly inserted into
the bottom of the carriage.
Install the
timing belt
properly.
A vertical line is
not aligned.
Bidirectional
alignment is not
adjusted.
Check the printer with the
bidirectional alignment
program.
Adjust the
bidirectional
alignment.
Paper is not
fed normally.
Character or
dot pitch is
abnormal.
Character or dot
pitch is abnormal.
Check the head
inclination, distance, and
front/rear position.
Make each
adjustment.
Paper is not
fed normally.
Paper is not fed.
Foreign
substances are
lodged in the
paper path.
Visually check the paper
path.
Remove any
foreign
substance.
Paper feed gears
are defective.
Visually check the gears,
rotating the gears with the
knob.
Replace
defective gears.
The paper feed
motor is defective.
Measure the coil
resistance of the PF motor.
Replace the PF
motor.
Troubleshooting
5-16 EPSON Stylus 1500 Service Manual