31-01MB2135

Lexmark MB2135 Error 31-01: Paper Jam

The Lexmark MB2135 error 31-01 flags an obstruction in the entry zone, preventing the printer from feeding pages into the drum unit. This is one of the most common alerts for this office model and is typically caused by loading issues, damp paper, or accumulated dust on the rollers. Careful removal of the trapped sheet is the primary remedy.

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Common causes

  • 1Overloaded tray: Forcing rollers to pick up too much weight.
  • 2Humidity: Paper sticking together due to moisture.
  • 3Worn rollers: Lack of rubber friction on the feed rollers.
  • 4Internal debris: Small bits of labels or staples triggering sensor false positives.

Solutions

Quick Diagnosis

If you hear a dragging sound followed by immediate stoppage, check if the leading edge of the page is skewed or stuck near the rollers.

Step-by-Step Solution

  1. Pull out the main input tray completely.
  2. Scan for tiny scraps or debris near the intake sensor.
  3. Ensure paper is neat, aligned, and not curled from humidity.
  4. Firmly push the tray back into place.

Prevention and Maintenance

Do not exceed the tray's maximum paper limit. Monthly cleaning of feed rollers preserves friction for smooth operation.

When to Call a Technician

If you have cleared the area and verified paper loading, but the 31-01 code persists, the physical sensor may be faulty.

Technical Specifications

  • Technology: Monochrome Laser
  • Speed: 35 ppm
  • Connectivity: USB, Ethernet, WiFi
  • Capacity: 250 sheets
  • Compatible consumable: MB2135 series cartridges
  • Recommended use: Small office
  • Drivers / official firmware

Steps to follow

  1. 1

    Tray removal

    Remove the main input tray completely to access the roller assembly.

  2. 2

    Jam removal

    Gently extract the jammed paper trying not to tear it, ensuring no scraps are left behind.

  3. 3

    Verification

    Reinstall the tray and restart the printer by pressing the OK button.

Frequently asked questions

Locate the jam in the input tray, remove the paper carefully, and check for any remaining fragments.

It often occurs if paper is misloaded or if the feed rollers are dusty and losing grip.

It uses MB2135 family high-yield cartridges. Avoid low-quality compatibles to prevent residue buildup.

Clean the rollers monthly with distilled water and a lint-free cloth to keep them from slipping.