If your Brother MFC-L5700DW laser all-in-one printer is displaying an error code, you're not alone. This workgroup monochrome laser printer—known for its 42 ppm print speed and 300-sheet paper capacity—can develop issues ranging from simple paper jams to complex fuser malfunctions. Whether you're seeing a two-digit display code, a "Replace Drum" message, or a persistent red error light, this guide walks you through proven troubleshooting steps to get your office printer back online. Our printer repair specialists have resolved thousands of Brother MFC-L5700DW error code issues, and the fixes below address the most common causes.
Common Error Codes on the MFC-L5700DW
The Brother MFC-L5700DW uses a combination of LCD display messages and LED indicators to communicate problems. Error codes typically fall into four categories: paper handling errors (Jam 0A, Jam 02), consumable issues (Drum End Soon, Replace Toner), hardware failures (Fuser Error, Laser Error), and connectivity problems. Identifying your specific code is the first step toward an effective fix printer solution.
Step-by-Step Troubleshooting
1
Power Cycle and Reset the Printer: Unplug the power cord from the rear of the MFC-L5700DW while the printer is powered on. Wait at least 60 seconds—this allows the internal capacitors to fully discharge and clears temporary memory glitches. Press and hold the power button for 10 seconds while unplugged, then reconnect the power cord and turn the printer back on. Check if the Brother MFC-L5700DW error code clears. This simple reset resolves approximately 30% of transient error conditions caused by power fluctuations or firmware hiccups.
2
Clear All Paper Jams Completely: Open the front cover and remove the toner cartridge and drum unit assembly. Check the entire paper path: the standard 250-sheet lower tray, the 50-sheet multipurpose tray, the rear output door (accessible by opening the back panel), and the optional 500-sheet lower paper tray if installed. Remove any visible paper fragments carefully—torn pieces left behind cause recurring Jam 0A and Jam 02 errors. Rotate the green tab on the drum unit several times to free hidden debris, then reinstall firmly until you hear both sides click into place.
3
Inspect and Replace Consumables: The MFC-L5700DW uses TN-850 toner cartridges and DR-820 drum units. Error codes "Replace Toner," "Toner Ended," or "Drum End Soon" indicate consumable exhaustion. For toner-related errors, remove the cartridge and shake it gently side-to-side to redistribute remaining toner—this may yield several hundred additional pages. If the error persists, install a genuine Brother TN-850 cartridge. For drum errors, reset the drum counter by opening the front cover, pressing and holding the OK button for 2 seconds, then selecting the drum unit and pressing the * key. Replace the DR-820 drum unit after approximately 30,000 pages.
4
Address Fuser and Hardware Error Codes: Fuser Error (typically displayed as E50, E51, E52, or E54) indicates the fuser unit—the component that bonds toner to paper using heat—is malfunctioning. The MFC-L5700DW's fuser operates at approximately 180°C and requires replacement after 100,000 pages under normal conditions. Turn off the printer and allow 30 minutes for the fuser to cool. If the error returns after cooling and restart, the fuser assembly (LU9215001 or LU8568001 depending on revision) needs professional replacement. Laser Error (E31-E37) and Main Motor Error (E60) similarly require internal hardware service beyond typical user troubleshooting.
5
Update Firmware and Check Network Settings: Connectivity-related errors and some display anomalies resolve with firmware updates. Connect the MFC-L5700DW to your network via Ethernet, then access the web interface by entering the printer's IP address in a browser. Navigate to Machine Settings > Firmware Update, or download the latest firmware from Brother's support site and apply via USB. Current firmware versions address known issues with Sleep Mode errors, scanning interruptions, and certain Wi-Fi Direct connection failures. For "Connection Error" or "Offline" status, verify the network cable, reset the network settings to factory defaults through the control panel menu, and reconfigure with a static IP if DHCP conflicts are suspected.
6
Perform Factory Reset for Persistent Errors: When a Brother MFC-L5700DW error code remains after all other troubleshooting, reset to factory defaults. Press Menu, navigate to Initial Setup, select Reset, then choose Machine Reset or Network Reset depending on the error type. Machine Reset restores all settings including date/time, fax settings, and address book entries—back these up first if possible. Network Reset clears all wireless and wired configurations. After reset, reconfigure the printer and test with a simple print job. If the error code displays immediately after reset without any consumables installed, the main PCB likely requires replacement.
⚠️ Important: Never force open covers or use sharp metal tools to remove paper jams—this can damage the delicate photoconductor drum or scratch the fuser rollers, causing permanent print quality defects. If you smell burning plastic or see smoke, immediately disconnect power and do not attempt further troubleshooting; contact professional printer support. Using non-Brother toner cartridges may void your warranty and can trigger false "Replace Toner" errors that standard resets cannot clear.
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What does "Drum Error" mean on my Brother MFC-L5700DW?
The Drum Error indicates the DR-820 drum unit has reached its end of life (approximately 30,000 pages) or the corona wire needs cleaning. Open the front cover, remove the drum unit, and slide the green tab back and forth several times to clean the corona wire. If the error persists after reinstallation, replace the drum unit with a genuine Brother DR-820. After replacement, reset the drum counter through the printer menu to clear the error display.
Why does my MFC-L5700DW show "Jam 02" when there's no paper visible?
Jam 02 indicates a paper jam in the fuser area or rear output path. Small torn pieces often remain hidden behind the fuser cover or in the duplex unit. Open the rear output door (the back panel that flips down), remove the fuser cover if accessible on your revision, and carefully remove all debris. Check the duplex path by removing the paper tray and looking upward into the chassis. Even a 5mm paper fragment can trigger this sensor-based error.
How do I fix a "Fuser Error" that keeps returning after cooling?
Intermittent Fuser Errors that resolve temporarily with cooling typically indicate the fuser thermistor is failing or the heating element has developed a hot spot. The MFC-L5700DW fuser assembly (part LU9215001) is a field-replaceable unit but requires partial disassembly. Professional installation is recommended due to high-voltage components and precise torque specifications on mounting screws. Continuing to operate with a failing fuser risks damaging the main PCB or causing thermal damage to surrounding components.