Is your Brother HL-L2320D slow printing every document, leaving you waiting far longer than expected for even simple pages? This compact monochrome laser printer is designed to deliver up to 30 pages per minute, so when performance drops, it usually points to specific configuration or maintenance issues. In this printer repair guide, our technicians walk through proven steps to fix printer speed problems and restore the fast, reliable output this model was built for.
Common Causes of Slow Printing on the HL-L2320D
The Brother HL-L2320D slow printing issue typically stems from one of several areas: incorrect driver settings, USB connection limitations, outdated firmware, or the printer operating in a degraded toner-saving mode. Because this model lacks wireless connectivity and relies solely on USB 2.0, connection quality plays a major role. Understanding where the bottleneck occurs helps you apply the right troubleshooting step without wasting time.
Step-by-Step Troubleshooting
1
Verify You're Using the Correct Brother Printer Driver: Many users accidentally install a generic "Microsoft IPP Class Driver" or "USB Printing Support" driver instead of Brother's official PCL6 driver. Open Control Panel > Devices and Printers, right-click your HL-L2320D, select Printer Properties, and check the driver name. If it doesn't say "Brother HL-L2320D" specifically, download the full driver package from Brother's support site (version R1.11 or later for Windows 10/11). The correct driver enables bidirectional communication and optimized print spooling, which directly affects speed.
2
Switch from Spooling to "Print Directly to the Printer": For users experiencing Brother HL-L2320D slow printing with small documents, Windows print spooling can create unnecessary delays. In Printer Properties > Advanced tab, select "Print directly to the printer" instead of "Spool print documents." This bypasses the spooler and sends jobs immediately. Note: this works best for single-user setups; re-enable spooling if you experience print queue conflicts in multi-user environments.
3
Check USB Connection Quality and Port Selection: The HL-L2320D requires a direct USB 2.0 connection—avoid USB 3.0 hubs, extension cables, or front-panel ports that may negotiate at slower speeds. Use the original Brother USB cable (or a certified 6-foot cable maximum) and connect directly to a rear motherboard USB 2.0 port. In Device Manager, expand "Universal Serial Bus controllers" and verify the port isn't showing errors. A degraded USB connection forces the printer to buffer excessively, causing visible slowdowns on every job.
4
Disable Toner Save Mode and Adjust Print Quality: Open the Brother printer driver preferences (BrMain410.exe or via Printing Preferences), navigate to the Advanced tab, and set "Toner Save Mode" to Off. While this feature extends cartridge life, it processes pages differently and can reduce throughput by 40% or more. Simultaneously, verify "Print Quality" is set to 600 DPI rather than 1200 HQ; the HL-L2320D's 1200 HQ mode uses smoothing algorithms that require additional processing time per page with minimal visible improvement on standard documents.
5
Update Firmware and Clear the Printer Memory: Outdated firmware on the HL-L2320D can cause inefficient memory management during complex print jobs. With the printer powered on, press the Go button three times within two seconds to print a configuration page. Check the Firmware Version line—if it's below 1.23, update using Brother's Firmware Update Tool. After updating, power cycle the printer: hold the power button for 10 seconds, unplug for 60 seconds, then reconnect. This clears any corrupted job data lingering in the 32MB onboard memory.
6
Optimize Document Complexity and Application Print Settings: The HL-L2320D's 266 MHz processor handles basic text efficiently but struggles with image-heavy PDFs or documents with embedded fonts. In your application (Adobe Reader, Word, etc.), enable "Print as Image" only when necessary—otherwise disable it. For PDFs, select "Fast Web View" optimization before printing. In the Brother driver, under the Basic tab, choose "Graphics" mode for mixed documents instead of "Text," which forces unnecessary re-rendering. These printer support adjustments reduce processing overhead and restore near-rated speeds.
⚠️ Important: Never interrupt a firmware update on the Brother HL-L2320D by disconnecting power or the USB cable. An incomplete firmware flash can corrupt the printer's NVRAM, rendering the device unresponsive and requiring manufacturer service recovery. Ensure stable power and an uninterrupted USB connection throughout the entire update process.
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Why is my Brother HL-L2320D slow printing only with PDF documents?
PDFs often contain embedded fonts, vector graphics, and transparency layers that require significant rasterization processing on the HL-L2320D's limited 266 MHz processor. To fix printer performance with PDFs, open Adobe Reader, go to Edit > Preferences > Security (Enhanced), and disable "Protected Mode at startup." Then in the print dialog, click "Advanced" and uncheck "Let printer determine colors." These changes reduce pre-processing overhead and typically restore normal print speeds.
Can a nearly empty toner cartridge cause Brother HL-L2320D slow printing?
Yes, though less directly than inkjet models. When Brother TN-660 or TN-630 toner cartridges run low, the printer's density control sensor works harder to maintain consistent output, occasionally adding micro-pauses between pages. If you notice slower printing combined with faint output, shake the toner cartridge side-to-side five times to redistribute remaining toner, or replace it. The drum unit (DR-630) should also be checked—at end-of-life it can cause similar throughput degradation.
Does the HL-L2320D support faster printing with a different connection type?
No—the HL-L2320D is USB-only with no Ethernet or wireless option. This makes USB troubleshooting critical for resolving speed issues. If you need network printing, Brother offers the HL-L2350DW or HL-L2370DW models with built-in Wi-Fi and Ethernet, which handle spooling and job management more efficiently in multi-user environments. For HL-L2320D users, ensuring optimal USB 2.0 connectivity is the only path to maximum rated speed.