Epson STYLUS COLOR 3000 Service Manual page 147

Troubleshooting
Condition
Vertical lines don't Bi-D is not
align. properly adjusted.
White banding The printhead is
occurs. defective.
Paper feed
mechanism does
not operate
normally.
Outline of the image Printhead angle is
is not clear. not properly
Color ink doesn'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
properly positioned. collected micro
pearl powder from
glossy paper 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.
5-18
Table 5-7 M-4J60 Printer Mechanism Repair (continued)
Cause
Symptom: Abnormal printing (continued)
Use the driver to clean the printhead at
least 3 times. Run a nozzle test after
each cleaning. If there's no
improvement, 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 Ω ± 10% at 25 °C per phase
(Refer to Table 5-1.)
Check if micro pearl powder is
remaining on the PF roller.
Load the paper and check Pins 24 and
25 on CN21 for a change in the HIGH
and LOW signals.
Checkpoint
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EPSON Stylus Color 3000 Service Manual
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.