buffer-full-09DL7400 Pro

Fix Fujitsu DL7400 Pro Error Buffer-Full-09

The Fujitsu DL7400 Pro error buffer-full-09 signals that the printer's internal RAM is overflowing with incoming data. This happens when the volume or complexity of the print task exceeds the small memory footprint of the device, halting further operation. To clear it, users must empty the queue and reset the memory cache.

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Common causes

  • 1Sending high-resolution images to the printer.
  • 2Printer memory saturation.
  • 3Driver/Spooler data transfer mismatch.
  • 4Interrupted network communication.

Solutions

Quick Diagnosis

This error is standard for dot matrix printers when overloaded with high-density data. If it happens frequently, verify if the current document contains heavy graphics.

Step-by-Step Fix

  1. Delete all jobs from your PC print queue.
  2. Power off the printer and disconnect the data cable for 30 seconds.
  3. Restart the Windows Print Spooler service.
  4. Reconnect and send documents one by one.

Prevention and Maintenance

Use simple text formats. Ensure your drivers are updated to the latest official version to handle complex documents efficiently.

When to Call a Technician

If the error appears consistently even with basic, low-memory text documents, the printer's RAM chip might be malfunctioning.

Equipment Data Sheet

  • Technology: Impact Dot Matrix
  • Speed: Up to 720 cps
  • Connectivity: USB/Parallel/LAN
  • Consumable: DL7400 Ribbon Series
  • Buffer: Standard 128KB
  • Use Case: Heavy industrial printing
  • Official Drivers / firmware

Steps to follow

  1. 1

    Cancel Print Queue

    Clear all pending tasks from your PC's print spooler.

  2. 2

    Power Reset

    Power down the printer and unplug for 30 seconds to flush the RAM.

  3. 3

    Restart Spooler

    Restart the system print spooler service to establish a clean connection.

Frequently asked questions

This code indicates the internal memory of the printer has reached maximum capacity and cannot accept new data.

Avoid sending highly complex graphics or massive PDF files directly to the dot matrix port.

Always use original ribbons to keep printing performance optimized and prevent buffer buildup.

Yes, updates often include improvements for data handling and interface communication.

Fix Fujitsu DL7400 Pro Error Buffer-Full-09 | Vimazdev