Start with evidence
Run the tests that separate the likely branches
Printer Grayscale Test PagePrint a stepped grayscale to inspect tonal separation, color casts, and blocked shadows or highlights.
Run →Printer Small Text Test PagePrint small text at several sizes to inspect sharpness, edge quality, smearing, and readability.
Run →Printer Fine Line TestPrint fine horizontal and vertical line patterns to inspect broken lines, doubling, registration and feed consistency.
Run →Decision table
What the observation changes
ObservationWhat it meansNext action
Controlled page is also fadedProblem is not limited to the original document.Check toner/drum status and Brother print-quality maintenance.
Controlled page is normalPrinter engine can produce normal density in this path.Inspect document/app/driver/economy settings.
Repeatable bands/spots at same positionA physical print-process/consumable pattern is more likely.Follow Brother model-specific print-quality/service guidance.
Sequence
Work from reversible checks to escalation
- 01
Print DeviceOK grayscale and small-text references.
- 02
Check toner/drum messages separately.
- 03
Disable unusual economy/toner-save setting for comparison.
- 04
Replace only the consumable supported by evidence/status.
Likely areas
Keep these branches separate
TonerDrum/print processEconomy/driver settingDocument-specific output
Repair boundary
When to stop changing settings
If defects persist with correct consumables and Brother maintenance steps, use Brother service.