077-101WorkCentre 7855

Error 077-101 Xerox WorkCentre 7855: Tray Fix

The Xerox WorkCentre 7855 error 077-101 means tray sensors do not match the paper size defined in the control panel. To solve the 077-101 error on your WorkCentre 7855, re-adjust the tray guides and confirm size settings on screen.

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Common causes

  • 1Incorrect paper guide adjustment.
  • 2Panel paper size setting mismatch.
  • 3Curled paper failing to trigger edge sensors.
  • 4Dirt buildup in the tray size sensor.

Solutions

Diagnóstico rápido

The 077-101 occurs due to guide misalignment. If paper shifts laterally, the edge sensor will not trigger correctly.

Solución paso a paso

  1. Adjust guides: Remove the tray and adjust guides precisely to the paper size loaded.
  2. Check stack: Ensure paper is flat, fanned, and below the height limit mark.
  3. Reset tray: Close the tray firmly; the sensor will detect the change automatically.

Prevención y mantenimiento

Avoid curled paper. Keep guides snug but not tight. Use only certified Xerox paper.

Cuándo llamar a un técnico

If the code persists after aligning guides and settings, a tray size sensor might be physically broken.

Ficha técnica del equipo

  • Technology: Color multifunction laser
  • Print Speed: 50/55 ppm
  • Connectivity: USB, Ethernet, Cloud
  • Paper Capacity: up to 5,140 sheets
  • Compatible Consumable: Xerox WorkCentre 78xx series toner
  • Recommended Use: Corporate production
  • Official drivers / firmware

Steps to follow

  1. 1

    Adjust guides

    Remove the tray and adjust guides precisely to paper size.

  2. 2

    Check stack

    Ensure paper is flat and below the limit.

  3. 3

    Reset tray

    Close the tray for sensor detection.

Frequently asked questions

This code indicates a discrepancy between configured paper size and the physical size detected in the tray.

No, the system halts printing to prevent paper jams caused by incorrect registration.

Low-quality paper that curls easily can trigger size detection errors.

Cleaning tray size sensors with compressed air once a month is recommended.