0x61000021OfficeJet Pro 8135e Business

HP OfficeJet Pro 8135e Business Error 0x61000021: Fix

The HP OfficeJet Pro 8135e Business error 0x61000021 indicates an input paper feed failure. The machine tries to pick up paper, but the internal sensor fails to confirm the entry. Common causes include worn rubber rollers, debris, or paper loaded improperly in the tray.

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Common causes

  • 1Accumulation of paper fibers on feed rollers.
  • 2Improper alignment of paper guides.
  • 3Use of paper media outside the supported grammage specs.
  • 4Sensor failure due to accumulation of fine dust.

Solutions

Diagnóstico rápido

If the motor sounds like it's trying to grab paper but stops, the issue is friction. Check the tray path for any small debris that might be interfering with the paper sensing mechanism.

Solución paso a paso

  1. Pull out the input tray completely to examine the internal paper path.
  2. Check for debris like torn labels or scrap paper hiding in the rollers.
  3. Wipe the rollers with distilled water on a lint-free cloth to restore grip.
  4. Refill and reset by aligning the paper guides perfectly to the paper stack.

Prevención y mantenimiento

Keep the paper path clean of dust. Periodically clean the rollers and ensure paper is stored in a dry place to prevent moisture causing paper to stick together. Proper guide adjustment is crucial for consistent intake.

Cuándo llamar a un técnico

If the rollers appear permanently glazed or if the mechanical movement is accompanied by loud, abnormal noises, internal gear damage might be present.

Ficha técnica del equipo

  • Technology: Thermal Inkjet.
  • Speed: 20 ppm.
  • Input: 225 sheets.
  • Connectivity: Wi-Fi, Ethernet.
  • Consumables: HP 922/923 series.
  • Recommended Use: Business usage.
  • Official drivers / firmware

Steps to follow

  1. 1

    Clear paper

    Remove the input tray and clear any jammed sheets.

  2. 2

    Clean rollers

    Wipe the rubber rollers with a lightly damp cloth.

  3. 3

    Adjust guides

    Ensure guides are snug against the paper stack.

  4. 4

    Restart

    Close the tray and retry the print job.

Frequently asked questions

This error occurs when the printer fails to pull paper from the tray, usually due to a mechanical obstruction or dirty rollers.

If the tray is forced with misaligned paper, the paper presence sensor can become misaligned.

Standard 80g paper ensures the rollers maintain proper grip and prevent slippage.

Use a lint-free cloth with distilled water and gently rub the surface of the rollers to remove paper dust.