MODEL REFERENCE

Brother HL-L2370DN

27 errors · 40 troubleshooting topics · 2 guides

Brother HL-L2370DN

The checks and guides below come from the official manuals for this model.

Errors and messages

Shown on the machine display
2-sided Disabledrear cover or two-sided tray open
2 checks
The back cover of the machine is not closed completely.
Close the rear cover until it locks.
The 2-sided tray is not installed completely.
Seat the two-sided tray firmly.
Cartridge Errortoner cartridge not seated
Remove the drum and toner assembly, reseat the toner cartridge in the drum, and reinstall the assembly. Contact Brother if the error remains.
Cooling Downprinter cooling down
Wait for the printer to cool and keep its vents clear. If the fan is not running, disconnect power for several minutes and reconnect it.
Cover is Openfront or rear fuser cover open
2 checks
The front cover is not completely closed.
Open and close the front cover firmly.
The fuser cover is not completely closed.
Close the fuser cover inside the rear cover.
Drum !drum wire or assembly needs attention
2 checks
The corona wire on the drum unit must be cleaned.
Clean the corona wire; replace the drum if the problem persists.
The drum unit or the toner cartridge and drum unit assembly is not installed correctly.
Reseat the cartridge and reinstall the drum assembly.
Related instructions: Clean the corona wire
Drum End Soondrum nearing end of life
Order a replacement drum before Replace Drum appears.
Jam 2-sidedpaper jam in two-sided path
Remove the two-sided tray, open the rear cover, clear the jammed paper, and reinstall the tray.
Jam Insidepaper jam inside printer
Open the front cover, remove the drum and toner assembly, clear the jam, reinstall the assembly, and close the cover.
Jam Rearpaper jam at rear fuser
Open the rear fuser cover, remove the jammed paper, and close the cover.
Jam Tray 1paper jam in tray 1
Pull out the tray shown on the display and remove the jammed paper.
Manual Feedmanual feed slot is empty
Place a sheet in the manual feed slot.
Media Mismatchdriver and tray paper types differ
Load the paper type specified by the driver and select that same type in the printer's Paper Type setting.
No Drum Unitdrum unit not installed correctly
Reinstall the drum and toner assembly.
No Paperpaper tray empty or loaded incorrectly
Refill or reload the tray, set the guides to the paper size, and keep the stack below the fill mark.
No Paper T1paper not fed from tray 1
Refill or reload the tray shown on the display, align its guides, and avoid overfilling it.
No Tonertoner cartridge not detected
Reseat the toner cartridge in the drum and reinstall the assembly. Replace the cartridge if the message persists.
Out of Memoryprinter memory full
Hold Go for about two seconds, then lower the print resolution.
Print Data Fullstored print data fills memory
Hold Go for about two seconds and delete previously stored print data.
Print Unable ##mechanical print fault
Restart the printer after a few minutes. Contact Brother if the fault returns.
Replace Drumdrum replacement or counter reset needed
2 checks
It is time to replace the drum unit.
Install a new drum unit.
The drum unit counter was not reset when a new drum was installed.
Reset the drum counter.
Replace Tonertoner cartridge exhausted
Install a new toner cartridge to resume printing.
Self-Diagnosticfuser temperature fault
2 checks
The temperature of the fuser unit does not rise to a specified temperature within the specified time.
Restart the machine, then leave it on for 15 minutes.
The fuser unit is too hot.
Restart the machine, then leave it on for 15 minutes.
Size Errordriver paper size unsupported by selected tray
Choose a paper size supported by the selected tray.
Size Error DXpaper size unsupported for two-sided printing
2 checks
The paper size specified in the machine's paper size setting is not available for automatic 2-sided printing.
If required, hold Go for about two seconds. Load A4 paper, which is the supported automatic two-sided size for this regional model, and set the tray and driver to match.
The paper in the tray is not the correct size and is not available for automatic 2-sided printing.
If required, hold Go for about two seconds. Load A4 paper, which is the supported automatic two-sided size for this regional model, and set the tray and driver to match.
Size Mismatchloaded paper size differs from tray setting
Load the size shown in the tray settings, update the tray paper-size setting, then press Go.
Toner Endedtoner cartridge exhausted
Install a new toner cartridge.
Toner Lowtoner cartridge nearly empty
Order a replacement cartridge so it is ready when Replace Toner appears.

Troubleshooting

Find the problem you are experiencing
No printout2 steps
  1. Check that the printer is powered on and online, that the Brother driver is selected, and that no error appears on its display.
  2. Check the network or USB cable at both ends and the Ethernet Link Status on the printed Network Configuration Report.
Printer stopped during a print jobView
Cancel the stalled job, clear it from printer memory, and send the document again.
Headers or footers are cut offView
Move the document’s top and bottom margins into the printable area.
Unexpected or garbled printoutView
Cancel the current job, check the application settings and selected Brother driver, then resend it.
Text disappears after the first printed pagesView
Check application settings and reconnect the interface cable so the printer receives all data.
Automatic two-sided printing does not workView
Choose A4 paper in the driver. This regional model supports automatic two-sided printing on A4; US Letter and Legal instructions from another edition do not apply.
Printing is slowView
Lower the driver resolution or turn Quiet Mode off to improve print speed.
Printer does not feed paperView
Straighten or reload the paper, reduce an overfilled stack, and clean the pickup rollers if feeding still fails.
Manual feed slot does not feed paperView
Feed one sheet firmly until the rollers catch it, and select Manual as the driver paper source.
Envelopes do not feedView
Feed one envelope at a time through the manual slot and select its size in the application.
Faint print3 steps
  1. Install a new toner cartridge if Replace Toner appears.
  2. Check temperature and humidity, turn Toner Save off on the machine or in the driver, and clean the corona wire.
  3. If quality stays faint, replace the toner, then the drum as needed.
Related instructions: Clean the corona wire
Gray shading behind printed textView
Check room heat and humidity, then clean the drum or replace worn toner and drum.
Repeated ghost images3 steps
  1. Check temperature and humidity, match the driver and machine’s media type to the paper, and return both green rear levers to their upward position.
  2. Clean the drum.
  3. Replace the drum or toner if required; contact Brother for a suspected contaminated fuser.
Toner specks on pageView
Match driver media type to paper, clean the drum, then replace damaged toner or drum.
Hollow or outlined printView
Choose Thick Paper or thinner stock, match Paper Type, and check humidity; replace a damaged drum.
Entire page prints blackView
Clean the drum’s corona wire and replace the drum if the page remains black. Related instructions: Clean the corona wire
White lines across pageView
Replace the drum unit.
Horizontal lines across pageView
Clean the drum unit and replace it if the lines persist.
White bands or ribbing across pageView
Check humidity and temperature, clean the drum, then replace it if several pages do not clear the pattern.
White and black spots every 94 mmView
Print a few pages first. If spots persist, use the drum-dot cleaning procedure to remove foreign material from the drum; replace a damaged drum.
Black toner marks across pageView
Clean adhesive from the drum if labels caused it, then replace damaged toner or drum.
Black vertical lines or toner stainsView
Clean the corona wire and return its green tab to Home. Replace a damaged toner cartridge or drum. Contact Brother if a contaminated fuser is suspected. Related instructions: Clean the corona wire
White vertical linesView
Remove scraps or dust near the toner and drum, then replace damaged toner or drum.
Image prints at an angle2 steps
  1. Load paper squarely, fit the guides, clear scraps, and check the two-sided path if skew occurs only there.
  2. For automatic two-sided printing, check the two-sided tray is fully inserted and the rear cover fully closed.
Printed page curls or wavesView
Check paper storage and quality, turn and fan the stack, then use the rear output tray if needed.
Printed page wrinkles or creasesView
Reload suitable paper and rotate or turn the tray stack.
Toner does not fuse to paper3 steps
  1. Return both green rear levers to their upward position.
  2. Match media type to the paper and choose Improve Toner Fixing in the driver.
  3. If that fails, select a thicker-paper media type.
Printed envelopes crease2 steps
  1. Lower both green rear levers for envelope printing and restore them afterward.
  2. Print with the back cover open as the output tray, and feed envelopes one at a time through the manual slot.
Printer does not appear in AirPrintView
Turn on the printer, check its Ethernet connection and network settings, and ensure the Apple device can reach the printer through the same network.
AirPrint job will not printView
Check that the printer is on and the network settings are correct.
AirPrint prints only the first pageView
Update the iOS device to a current operating-system version and retry.
Printer will not turn on3 steps
  1. Unplug the power cord and wait ten minutes, then reconnect and turn the printer on.
  2. If it remains off, bypass a suspect power breaker and try another working wall outlet.
  3. Try a different power cable if necessary.
Brother software installation failsView
Allow Brother setup in security software; on Mac, temporarily adjust firewall settings during installation.
Printer cannot print over the network5 steps
  1. Check whether security software blocks the printer and use its instructions or vendor support to allow access.
  2. Check the printer and computer have valid IP addresses and subnet masks on the same network.
  3. On Windows, the Network Connection Repair Tool can help.
  4. Delete the failed job or cancel all queued print documents in the operating system’s printer queue.
  5. Reseat the Ethernet cable and check Link Status in the Network Configuration Report.
Network devices do not appear connected5 steps
  1. Check power, installed toner and drum, closed covers, paper and removed packing.
  2. Print the Network Configuration Report and verify IP addressing.
  3. Reseat the network cable and check the link indicators.
  4. Ping the printer’s IP address or node name; check the computer and printer IP address and subnet mask if it fails.
  5. Use Brother’s Windows network connection repair tool if needed.
Paper jam in the paper trayView
Remove the tray and jammed sheet, fan the paper stack, align the guides, and keep the stack below the fill mark.
Paper jam at the back of the printerView
Leave the printer on for 10 minutes to cool. Open the rear and fuser covers, remove the paper gently, then close both covers.
Paper jam inside the printerView
Leave the printer on for 10 minutes to cool. Remove the drum and toner assembly, clear the jam, reinstall it, and close the front cover.
Paper jam in the two-sided trayView
Leave the printer on for 10 minutes to cool. Remove both trays, clear paper from the two-sided and rear paths, then reinstall them.
Reset the printer4 steps
  1. Back up network settings first.
  2. Choose the needed reset function in the Initial Setup menu; a network reset clears the print-server configuration.
  3. Confirm using the control-panel prompts.
  4. Resetting the drum counter is a separate operation and is only for a newly fitted drum.

Guides

Clean the corona wire

Instructions from the manual
Clean the corona wire2 steps
  1. Open the front cover and remove the toner/drum assembly.
  2. Slide the green corona-wire tab gently left and right several times, return it to Home, refit the assembly and close the cover.

Replace supplies

Instructions from the manual
Replace toner and drum4 steps
  1. Follow the guide’s replacement sequence for the correct regional supplies.
  2. Remove the toner/drum assembly, release the toner with its lock lever, fit the replacement securely and clean the corona wire.
  3. Return its tab to Home.
  4. For a new drum, reset the drum counter only after installation.
Related instructions: Clean the corona wire

Model details

Model and compatibility

Regional supplies
This UK/European guide lists TN-2410 standard toner, TN-2420 high-yield toner and DR-2400 drum. Verify the local model and region before buying. [1]
Two-sided printing
Automatic two-sided printing supports A4 in this regional edition. Do not apply Letter/Legal instructions from the US manual. [1]
Network connection
HL-L2370DN uses Ethernet or USB. WLAN and Wi-Fi Direct codes from the shared guide do not apply to this model. [1]

Manuals and sources

  1. Brother operation manual
  2. Brother model support and details
ManualGrid

Manuals, error messages and practical checks for the products you own.

An independent reference. Product names and trademarks belong to their respective owners.