Start with evidence
Run the tests that separate the likely branches
Printer Color Test PagePrint CMYK and RGB reference blocks to inspect missing colors and obvious print-quality problems.
Run →Printer Fine Line TestPrint fine horizontal and vertical line patterns to inspect broken lines, doubling, registration and feed consistency.
Run →Printer Alignment Test PagePrint fine lines and alignment references to inspect registration and obvious misalignment.
Run →Decision table
What the observation changes
ObservationWhat it meansNext action
Same color/line dropout repeats on test referencesPrinter/ink/nozzle path is more likely than one document.Use Epson nozzle-check/cleaning sequence.
Only one document shows bandsFile/app/driver is higher priority.Print the same DeviceOK reference from another app/device.
Cleaning helps briefly then defect returnsRepeated heavy cleaning is not a permanent diagnosis.Follow Epson maintenance/service guidance and ink-level requirements.
Sequence
Work from reversible checks to escalation
- 01
Print color and fine-line references.
- 02
Run Epson nozzle check before heavy cleaning.
- 03
Use normal cleaning as documented.
- 04
Only use Power Cleaning under Epson's stated ink-level/timing conditions.
Likely areas
Keep these branches separate
Clogged nozzlesAlignmentLow/air-affected ink pathDocument/driver
Repair boundary
When to stop changing settings
If nozzle checks remain defective after the documented maintenance sequence, use Epson support rather than repeating Power Cleaning continuously.