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
Missing bands repeat in the same colors on reference pagesPrinter-side ink/nozzle path is more likely than the document.Use Epson's nozzle-check/cleaning workflow rather than repeatedly changing apps.
Color blocks are complete but lines are offsetAlignment/mechanical calibration is higher priority.Run the documented alignment procedure.
Only one app/file looks wrongSource/profile/app becomes more likely.Compare another known reference file/app.
Sequence
Work from reversible checks to escalation
- 01
Print DeviceOK color/fine-line reference.
- 02
Run Epson nozzle check.
- 03
Use normal documented cleaning/alignment as indicated.
- 04
Retest before repeating maintenance cycles.
Likely areas
Keep these branches separate
Nozzle clog/ink deliveryAlignmentLow/incorrect inkPaper/media settingSource/app
Repair boundary
When to stop changing settings
If documented maintenance does not restore the nozzle/alignment pattern, use Epson support rather than excessive cleaning cycles.