Lines not smooth and ruled-line deviation

Occurrence condition
  • Printed lines are not smooth.
  • Lines printed in double in parts
  • Color deviation of part of mixed colors

Suspected cause
  • The paper that is being used is inappropriate.
  • Paper settings of main unit or printer driver settings are inappropriate.
  • Nozzle failure (nozzles missing or deflection)
  • CR Scale reading failure
  • Foreign matter on CR scanning lines
  • Overload when CR operation
  • PG right and left difference
  • Adjustment value failure

Related parts
  • CR Scale
  • CR Unit
  • Printer Mechanism
  • Printhead


Troubleshooting
ProcedureCheck and measureYesNo
1

Check the paper.

  • Check that the paper surface is flat.
  • Is a paper with a flat surface being used?

Go to step 2

  • Change to the standard paper, or a paper without any folds or creases.

When the phenomenon is improved, explain that the phenomenon is caused due to the paper, and make sure the standard paper free of any folds or creases is used.

If the symptom continues to occur, go to step 2.

2

Check the settings

  • Check that the paper settings of the main unit/printer driver are appropriate.
  • Make sure the print quality is set to Standard, or Quality First.
Go to step 3
  • Change the settings.

If the symptom continues to occur, go to step 3.

3

Check the nozzle check pattern.
Print nozzle check patterns and check whether there are nozzles missing or deflection.

Nozzle condition is excellent?

Go to step 4
  • Carry out head cleaning following the nozzle missing table below.
StrengthNumber of missing nozzles
CL11 to 5
CL26 to 20
CL321 or more
Note / 補足

*If nozzle missing is not resolved, refer to nozzle missing.

If the symptom continues to occur, go to step 4.

4

Check the CR Scale.
Visually check the CR Scale to confirm that it is not dirty or damaged.

Is the CR Scale normal.

Go to step 5
  • If the CR Scale is dirty, clean the CR Scale with a dust-free cloth.
  • If the CR Scale is scratched, replace it

If the symptom continues to occur, go to step 5.

5

Check the CR operation
Check the following CR operation.

Caution / 注意

* Unlock the CR Unit before the following checks.

  1. Move the CR left and right while holding the belt and check that it moves smoothly.
  2. Check that there is no foreign object on or damage to the CR Guide Frame.
  3. Check that the CR Timing Belt is not damaged or worn out.

Is there any problem with the check results of the above three points?


Go to step 6

  • When load is applied in the CR operation, clean the CR Guide Frame and apply grease to it.
  • When foreign objects are adhering on the CR Guide Frame, remove the foreign object.
  • If there are scratches or damage to the CR guide frame that impede CR operation, replace the Printer Mechanism.
  • If there are scratches or wear on the CR Timing Belt, replace the CR Unit (CR Timing Belt).


6

Check the PG
Check the PG  with the thickness gauge and check that it is within the specified value range (1.55 ±0.10 mm).


Go to step 7
  • Perform PG adjustment.

If the symptom continues to occur, go to step 7.




Perform the adjustments.
Perform the adjustments listed below.

  • Head angular mecha adjustment
  • Head angular adjustment
  • Bi-D Adjustment
  • Paper skew adjustment

Has the phenomenon been improved upon?

End
  • Replace the Printer Mechanism.

Does the error occur after replacing the Printer Mechanism?

Contact the EPSON Service Department.End