Why Does My Xprinter XP-420B Skip Labels or Feed Multiple Labels?
Exact model: Xprinter XP-420B
Safety: Disconnect the relevant power source and isolate moving, hot or pressurized components before service.
A.
Start with the accessible checks
What this suggests: Skipping one or more labels is usually a media-gap setting, label pitch or sensor-detection problem, not random firmware failure.
What to do
- Measure the physical label length INCLUDING gap and check whether media is gap or black-mark type.
- Select the matching sensor/media type and exact size in the XP-420B driver, align the media guides and run its sensor calibration with a clean, correctly threaded roll. Remove adhesive scraps obscuring the sensor.
Still not fixed? Continue to the next check.
↑ Back to the repair pathsB.
If the problem remains after the first checks
What to do
- If it still skips, compare the printer self-test feed with host-program output to decide between defective sensing and incorrect host page dimensions.
Confirm the repair
Repeated feeding stops at one successive label boundary without wasting labels.