Epson STYLUS 3000 Service Manual page 144

Troubleshooting
Table 5-11. Repair of M-4I60 Printer Mechanism(continued)
Condition
Vertical lines don't Bi-
align. properly adjusted.
White banding The printhead is
problem occurs. defective.
Paper feed
mechanism does
not operate
normally.
Outline of the image Head angular is
is not clear. not properly
Color inks don't print
adjusted.
properly. Head gap is not
properly adjusted.
Black and color
printheads are not
vertically aligned.
The printhead is
defective.
Paper is not fed. Foreign objects
are lodged in the
edge guide, PF
roller, paper guide
unit, or paper
eject drive unit.
The PF motor is
defective.
The top edge of the The PF roller
loaded paper is not surface has micro
properly positioned. pearl of the glossy
film and doesn't
grip paper
properly.
Symptom : The printer detects paper size incorrectly.
The printer prints
CR PW sensor is
beyond the printing
defective.
area.
5-16
Cause
Symptom : Abnormal printing (continued)
is not
$
Repeat cleaning at least 3 times and
check if the condition is improved.
If not, replace the printhead and run the
Self-test.
Symptom : Paper is fed abnormally.
Turn the knob and check if the paper
feed mechanism is normally
functioning.
Check if the resistance of the motor
coil is as follows;
10
(Refer to Table 5-1.)
Check if micro powder is remaining on
the PF roller.
Load the paper and check the Pin 24
and Pin 25 on the CN21 for the change
in the signal HIGH and LOW.
Checkpoint
± 10% at 25 °C per phase
Solution
Perform necessary
adjustments.
(Refer to Chapter 4.)
Replace the printhead.
Replace the PF motor.
Perform necessary
adjustment.
(Refer to Chapter 4.)
Perform necessary
adjustment.
(Refer to Chapter 4.)
Perform necessary
adjustment.
(Refer to Chapter 4.)
Replace the printhead.
Remove the foreign
objects.
Replace the PF motor.
Clean the PF roller.
Rev. A