Nozzles Missing

Symptom
  • NOZZLES MISSING
Cause
  • Nozzles clogged
  • Inksystem Assy failure
  • Air bubbles collected in ink tubes
  • Printhead failure
Troubleshooting
Step Check and measure Yes No
1

Check the nozzle check pattern

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

Nozzle condition is excellent?

  • Nozzle check pattern print method is belows.
    • Normal menu
      • [Setting] ⇒ [Maintenance] ⇒ [Print Head Nozzle Check]
  • Service Support Mode
End (No reproduction)

Obtain the information as follows from the service status sheet and execute head cleaning according to the nozzle missing state check matrix table.

  • Nozzle missing rank
  • Cleaning History

If nozzle missing is not improved after performing the above, go to step 2.
2

Check the Inksystem Assy

Check the following point about the Inksystem Assy.

Caution / 注意

From the service support mode (Service mode startup), execute "CR Unlock Power Off (Menu configuration)” in advance to release the CR lock.

Inksystem Assy is correct condition?

[Confirmation details]

  1. Check the cap parts
    • Check that the cap surfaces are not dirty.
    • Rotated the Inksystem Assy gears by hand and check that the cap moves up and down, and also capped correctly in the capping state.
  2. Check the wiper parts
      • Check that there is not soiling or damage to the wiper parts
      • Rotate the Inksystem Assy gears by hand and check that the wipers move back and forth.
 Go to step 3

If nozzle missing is not improved after performing the above, go to step 3.
3

Check the ink tubes

Visually check that air bubbles have not collected in the ink tubes. (If there are parts where the color is unmistakably pale in the supply system ink tubes, air bubbles may have collected.)

Ink tube is correct condition?

 Go to step 4

In the service support mode, execute C06 Strong head cleaning (C03 CL1/C04 CL2/C05 CL3/C06 STRONG CL/C07 (HEAD CLEANING)) to remove the bubbles in the tubes.

If nozzle missing is not improved after performing the above, go to step 4.
4

Replace the Printhead

Replace the Printhead.

Replace the Printhead. (Refer to Printhead (WF-C579R Series)/ Printhead (WF-C529R Series))

If the trouble is not resolved after replacing the Printhead, contact the Epson Service Support department.
Nozzle missing state check matrix table
Cleaning History
(Strongest CL within 3 days out of 5)


 Nozzle missing state

0(E0)*²
Nothing

1(E1)*²
Less than 5n in total

2(E2)*²
6～32n

3(E3)*²
33n or more

4(E4)*²*³
Failure nozzles 6n or more

A

 None A-0*¹ A-1 A-2 A-3 A-4
B CL/CL2 B-0*¹ B-1 B-2 B-3

B-4
C CL3 C-0*¹ C-1 C-2 C-3

C-4
D Power CL D-0*¹ D-1 D-2 D-3

D-4
  • *1: If nozzle check shows no missing dots, but printing quality is not good, run the cleaning (it is not necessary if there are no problems with printing quality)
  • *2: If nozzle check was not successfully performed, the number of the most recently successfully detected rank is displayed after "E". (E0, E1, etc.).
    If "E" is displayed continuously, the head may be malfunctioning.
  • *3: Rank 4 is also displayed if the work described in "B80 PRINT HEAD SEQ (ADJUSTMENT AFTER REPLACEMENT)" has not been done or if the adjustment has not been completed successfully after the head replacement.


    In that case, perform the adjustments related to the rank judgment [B26 NOZZLE NOISE CHECK], [B27 NOZZLE RANK CATEGORISE], and [B28 NOZZLE DETECT CHECK].

Examples of actions to be taken:
  • A-0, 1:  Running CL1 is recommended
  • A-2, 3:  Running CL2 is recommended
  • A-4, B-0~4:  Running CL3 is recommended
  • C-0~4:  Running Power CL is recommended
  • D-0~4:  Determining necessity of cleaning before head replacement is recommended
How to read the “Nozzle missing state check matrix table”
  1. Check the cleaning history and the nozzle missing dot rank.
    They can be checked on the Service Information Portal (only for Japan) or on the Service Status Sheet
  2. In the matrix table, find the intersection of the confirmed cleaning history and nozzle rank.
    See the description of the intersection and the example of action to be taken, and perform the recommended action.
    e.g.) If the strongest CL within 3 days is CL2 and the nozzle rank is 02, the intersection is B-2, so perform CL3 recommended for B-2.