White lines (Colored lines) / Banding

Assumed cause
  • Poor print quality due to cockling (wrinkling) or curl of paper
  • Head nozzle clogging
  • Foreign objects on Nozzle surface
Defect-related parts
  1. Head Unit
    Head nozzle clogging
  2. Wiper Unit
    Wiping failure on nozzle surface
  3. Cap Unit
    Cleaning failure on nozzle surface
Troubleshooting
Step Confirmation and action YES NO
1

Check the condition of the paper loaded in the tray.

If the paper is wavy, curled, or otherwise in poor condition, replace it with paper taken out of a newly opened pack or stored in a humidity-controlled storage.

  • Has the defect been improved?
 End of work Go to step 2
2

Check the symptom

Print the color gradation pattern in the service support mode.（20103 Color Gradation Pattern (AM-M5500: Gradation Pattern))

  • When streaks appear at regular intervals: Go to step 4
  • If the streaks are not evenly spaced : go to step 3.
 Go to step 4 Go to step 3
3

Run the head cleaning (CL2)

Run the CL2 cleaning from service support mode.（40103 CL2)

  • Has the defect been improved?
 End of work Go to step 4
4

Replace the paper currently used with different type of paper.

Use paper taken out of a newly opened pack or stored in a humidity-controlled storage.

  • Has the defect been improved?

End of work
* If replacing paper is not allowed, go to step 5

 Go to step 5
5

Perform Image quality adjustment

Run the Head Angular Adjustment from service support mode.（60110 Head Angular Adjustment)
* This adjustment should be made using the actual paper to be used.
* If there is no improvement, perform special print adjustment.（60114 Special Print Adjustment)

  • Has the defect been improved?
 End of work Go to step 6
6

Replace the Head Unit

  • Has the defect been improved?
 End of work Go to step 7
7

Replace the Wiper Unit

  • Has the defect been improved?
 End of work Go to step 8
8

Replace the Cap Unit

  • Has the defect been improved?
 End of work

Contact Epson local service representatives.