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Error and Maintenance Messages
- MFC-L3770CDW
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As with any sophisticated office product, errors may occur and supply items may have to be replaced. If this happens, your machine identifies the error or required routine maintenance and shows the appropriate message. The most common error and maintenance messages are shown in the table.
Follow the instructions in the Action column to solve the error and remove the message.
You can correct most errors and perform routine maintenance by yourself. If you need more tips: Visit support.brother.com, and click the FAQs & Troubleshooting page.
HL-L3290CDW/DCP-L3551CDW
| Error Message | Cause | Action |
|---|
| 2-sided Disabled | The back cover of the machine is not closed completely. | Close the back cover of the machine until it locks in the closed position. |
| Access Denied | The function you want to use is restricted by Secure Function Lock 3.0. | Ask your administrator to check your Secure Function Lock Settings. |
| Belt End Soon | The belt unit is near the end of its life. | Order a new belt unit before the LCD displays Replace Belt. |
| Calibrate | Calibration failed. |
|
| Cartridge Error | The toner cartridge is not installed correctly. | Remove the toner cartridge and drum unit assembly for the color that is indicated on the LCD. Take out the toner cartridge, and put it back into the drum unit again. Re-install the toner cartridge and drum unit assembly back in the machine. If the problem continues, contact Brother Customer Service or your local Brother dealer. |
| Condensation | Condensation may have formed inside the machine after a room temperature change. | Leave the machine turned on. Wait for 30 minutes with the top cover in the open position. Then turn off the machine and close the cover. Turn it on again. |
| Cooling Down | The temperature of the inside of the machine is too hot. The machine pauses its current print job and goes into cooling down mode. | Wait until the machine has finished cooling down. Make sure all vents on the machine are clear of obstructions. When the machine has cooled down, it will resume printing. |
| Cover is Open. | The top cover is not completely closed. | Open and then firmly close the top cover of the machine. |
| The fuser cover is not completely closed or paper was jammed in the back of the machine when you turned on the power. | Close the fuser cover located inside the back cover of the machine. Make sure paper is not jammed inside the back of the machine, and then close the fuser cover. |
| The ADF cover is not completely closed. | Close the ADF cover. If the error message remains, press Stop/Exit. |
| Document Jam | The document was not inserted or fed correctly, or the document scanned from the ADF was too long. | Remove the jammed paper from the ADF unit. Clear any debris or scraps of paper from the ADF unit paper path. Press Stop/Exit. |
| Drum ! | The corona wire on the drum unit must be cleaned. | Clean the corona wire on the drum unit.  See Related Information: Clean the Corona Wires. If the problem continues, replace the drum unit with a new one. |
| Drum End Soon | The drum unit is near the end of its life. | Order a new drum unit before you get the Replace Drum message. |
| Drum Stop | It is time to replace the drum unit. | Replace the drum unit. See Related Information: Replace the Drum Unit. |
| Jam 2-sided | The paper is jammed underneath the paper tray or the fuser unit. | Remove the paper tray or open the back cover to gently remove the jammed paper. |
| Jam Inside | The paper is jammed inside the machine. | Open the top cover, remove the toner cartridges and drum unit assembly, and gently remove the jammed paper. Reinstall the toner cartridges and drum unit assemblies into the machine. Close the top cover. |
| Jam Manual Feed | The paper is jammed in the manual feed slot of the machine. | Gently remove the jammed paper from in and around the manual feed slot. Reload the paper into the manual feed slot, and then press Black Start or Color Start. |
| Jam Rear | The paper is jammed in the back of the machine. | Open the fuser cover and gently remove the jammed paper. Close the fuser cover. If the error message remains, press Black Start or Color Start. |
| Jam Tray1 | The paper is jammed in the indicated paper tray. | Pull the paper tray out completely and gently remove all jammed paper. Put the paper tray firmly back in the machine. |
| Limit Exceeded | The print limit set in Secure Function Lock 3.0 was reached. | Ask your administrator to check your Secure Function Lock Settings. |
| Manual Feed | Manual was selected as the paper source in the printer driver, but there is no paper in the manual feed slot. | Place paper in the manual feed slot. |
| Media Mismatch | The media type specified in the printer driver differs from the paper type specified in the machine's menu. | Load the correct type of paper in the tray, and then select the correct media type in the Paper Type setting on the machine. |
| No Belt Unit | The belt unit is not installed or not installed correctly. | Reinstall the belt unit. |
| No Drum Unit | The drum unit is not installed correctly. | Reinstall the toner cartridge and drum unit assembly for the color indicated on the LCD. |
| No Paper T1 | The machine is out of paper, or paper is not loaded correctly in the paper tray. |
|
| No Toner | The toner cartridge or the toner cartridge and drum unit assembly is not installed correctly. | Remove the toner cartridge and drum unit assembly. Remove the toner cartridge from the drum unit, and reinstall the toner cartridge back into the drum unit. Reinstall the toner cartridge and drum unit assembly back in the machine. If the problem continues, replace the toner cartridge. |
| No Tray T1 | The paper tray is not installed or not installed correctly. | Reinstall the paper tray indicated on the LCD. |
| No Waste Toner | The waste toner box is not installed or not installed correctly. | Reinstall the waste toner box. |
| Out of Memory | The machine's memory is full. | If a copy operation is in progress, do one of the following:
If a print operation is in progress, press Stop/Exit, and then reduce the print resolution. |
| Print Data Full | The machine’s memory is full. | Press Stop/Exit and delete the previously stored secure print data. |
| Print Unable ## | The machine has a mechanical problem. |
|
| Registration | Registration failed. |
|
| Replace Belt | It is time to replace the belt unit. | Replace the belt unit with a new one. See Related Information: Replace the Belt Unit. |
| Replace Drum | It is time to replace the drum unit. | Replace the drum unit for the color indicated on the LCD. |
| If this message is displayed even after replacing the drum unit with new one, the drum unit counter was not reset. | Reset the drum unit counter. See Related Information: Replace the Drum Unit. |
| Replace Toner | The toner cartridge is at the end of its life. The machine stops all print operations. | Replace the toner cartridge for the color indicated on the LCD. See Related Information: Replace the Toner Cartridge. |
| Replace WT Box | It is time to replace the waste toner box. | Replace the waste toner box with a new one. See Related Information: Replace the Waste Toner Box. |
| Scan Unable ## | The machine has a mechanical problem. |
|
| Self-Diagnostic | The temperature of the fuser unit does not rise to a specified temperature within the specified time. |
|
| The fuser unit is too hot. |
| Short paper | The length of the paper in the tray is too short for the machine to deliver it to the Face down output tray. | Open the back cover (Face up output tray) to let the printed page exit onto the Face up output tray. Remove the printed pages, and then press Black Start or Color Start. |
| Size Error | The paper size defined in the printer driver is not supported by the defined tray. | Choose a paper size supported by the defined tray. |
| Size Error DX | The paper size specified in the machine's paper size setting is not available for automatic 2-sided printing. | Press Stop/Exit (if required). Load the correct size of paper in the tray and set the tray for that paper size. Choose a paper size supported by 2-sided printing. Paper sizes available for automatic 2-sided printing are Letter, Legal, Mexico Legal, India Legal and Folio. |
| The paper in the tray is not the correct size and is not available for automatic 2-sided printing. |
| Size Mismatch | The paper in the tray is not the correct size. | Load the correct size of paper in the tray and set the size of paper for the tray. |
| Toner Error | One or more toner cartridges are not installed or not installed correctly. | Pull out the drum units. Remove all of the toner cartridges, and then put them back into the drum units. |
| Toner Low | If the LCD displays this message, you can still print. The toner cartridge is near the end of its life. | Order a new toner cartridge before the LCD displays Replace Toner. |
| WT Box End Soon | The waste toner box is almost full. | Order a new waste toner box before the LCD displays Replace WT Box. |
MFC-L3710CW/MFC-L3750CDW/MFC-L3770CDW
| Error Message | Cause | Action |
|---|
| 2-sided Disabled | The back cover of the machine is not closed completely. | Close the back cover of the machine until it locks in the closed position. |
| Access Denied | The function you want to use is restricted by Secure Function Lock 3.0. | Ask your administrator to check your Secure Function Lock Settings. |
| Calibration | Calibration failed. |
|
| Cartridge Error | The toner cartridge is not installed correctly. | Remove the toner cartridge and drum unit assembly for the color that is indicated on the LCD. Take out the toner cartridge, and put it back into the drum unit again. Re-install the toner cartridge and drum unit assembly back in the machine. If the problem continues, contact Brother Customer Service or your local Brother dealer. |
| Comm.Error | Poor telephone line quality caused a communication error. | Send the fax again or connect the machine to another telephone line. If the problem continues, contact the telephone company and ask them to check your telephone line. |
| Condensation | Condensation may have formed inside the machine after a room temperature change. | Leave the machine turned on. Wait for 30 minutes with the top cover in the open position. Then turn off the machine and close the cover. Turn it on again. |
| Cooling Down | The temperature of the inside of the machine is too hot. The machine pauses its current print job and goes into cooling down mode. | Wait until the machine has finished cooling down. Make sure all vents on the machine are clear of obstructions. When the machine has cooled down, it will resume printing. |
| Cover is Open | The top cover is not completely closed. | Open and then firmly close the top cover of the machine. |
| Cover is Open. | The fuser cover is not completely closed or paper was jammed in the back of the machine when you turned on the power. | Close the fuser cover located inside the back cover of the machine. Make sure paper is not jammed inside the back of the machine, and then close the fuser cover. |
| Cover is Open. | The ADF cover is not completely closed. | Close the ADF cover. If the error message remains, press |
| Disconnected | The other person or other person's fax machine stopped the call. | Try to send or receive again. If calls are stopped repeatedly and you are using a VoIP (Voice over IP) system, try changing the Compatibility to Basic (for VoIP). |
| Document Jam | The document was not inserted or fed correctly, or the document scanned from the ADF was too long. | Remove the jammed paper from the ADF unit. Clear any debris or scraps of paper from the ADF unit paper path. Press |
| DR Mode in Use | The machine is set to Distinctive Ring mode. You cannot change the Receive Mode from Manual to another mode. | Set Distinctive Ring to Off. |
| Supplies Drum End Soon | The drum unit is near the end of its life. | Order a new drum unit before the LCD displays Replace Drum. |
| Drum ! | The corona wires on the drum unit must be cleaned. | Clean the corona wires on the drum unit. See Related Information: Clean the Corona Wires. If the problem continues, replace the drum unit with a new one. |
| Drum Stop | It is time to replace the drum unit. | Replace the drum unit. See Related Information: Replace the Drum Unit. |
| Jam 2-sided | The paper is jammed underneath the paper tray or the fuser unit. | Remove the paper tray or open the back cover to gently remove the jammed paper. |
| Jam Inside | The paper is jammed inside the machine. | Open the top cover, remove the toner cartridges and drum unit assembly, and gently remove the jammed paper. Reinstall the toner cartridges and drum unit assemblies into the machine. Close the top cover. |
| Jam Manual Feed | The paper is jammed in the manual feed slot of the machine. | Gently remove the jammed paper from in and around the manual feed slot. Reload the paper into the manual feed slot, and then press Start. |
| Jam MP Tray | The paper is jammed in the MP tray. | Gently remove the jammed paper from in and around the MP tray. Press Retry. |
| Jam Rear | The paper is jammed in the back of the machine. | Open the fuser cover and gently remove the jammed paper. Close the fuser cover. If the error message remains, press Retry. |
| Jam Tray 1 | The paper is jammed in the indicated paper tray. | Pull out the paper tray and remove all jammed paper as shown in the animation on the LCD. |
| Limit Exceeded | The print limit set in Secure Function Lock 3.0 was reached. | Ask your administrator to check your Secure Function Lock Settings. |
| Manual Feed | Manual was selected as the paper source in the printer driver, but there is no paper in the manual feed slot. | Place paper in the manual feed slot. |
| Media Type Mismatch | The media type specified in the printer driver differs from the paper type specified in the machine's menu. | Load the correct type of paper in the tray, and then select the correct media type in the Paper Type setting on the machine. |
| No Belt Unit | The belt unit is not installed or not installed correctly. | Reinstall the belt unit. |
| No HUB Support | A USB hub device is connected to the USB direct interface. | Disconnect the USB hub device from the USB direct interface. |
| No Drum Unit | The drum unit is not installed correctly. | Reinstall the toner cartridge and drum unit assembly for the color indicated on the LCD. |
| No Paper | The machine is out of paper, or paper is not loaded correctly in the paper tray. |
|
| No Paper MP | The MP tray is out of paper, or paper is not loaded correctly in the MP tray. | Do one of the following:
|
| No Paper T1 | The paper tray is out of paper, or paper is not loaded correctly in the paper tray. | Do one of the following:
|
| No Toner | The toner cartridge or the toner cartridge and drum unit assembly is not installed correctly. | Remove the toner cartridge and drum unit assembly. Remove the toner cartridge from the drum unit, and reinstall the toner cartridge back into the drum unit. Reinstall the toner cartridge and drum unit assembly back in the machine. If the problem continues, replace the toner cartridge. |
| No Tray T1 | The paper tray is not installed or not installed correctly. | Reinstall the paper tray indicated on the LCD. |
| No Waste Toner | The waste toner box is not installed or not installed correctly. | Reinstall the waste toner box. |
| Out of Fax Memory | The machine's fax memory is full. | If you are using the Fax Preview function, delete unwanted received fax data. If you are using the Memory Receive function and are not using the Fax Preview function, print received fax data. See Related Information: Print a Fax Stored in the Machine's Memory. |
| Out of Memory | The machine's memory is full. | If a fax-sending or copy operation is in progress, do one of the following:
If a print operation is in progress, press |
| Print Data Full | The machine’s memory is full. | Press |
| Print Unable ## | The machine has a mechanical problem. |
|
| Registration | Registration failed. |
|
| Supplies Replace Drum | It is time to replace the drum unit. | Replace the drum unit for the color indicated on the LCD. |
| If this message is displayed even after replacing the drum unit with new one, the drum unit counter was not reset. | Reset the drum unit counter. See Related Information: Replace the Drum Unit. |
| Replace Toner | The toner cartridge is at the end of its life. The machine stops all print operations. While memory is available, faxes are stored in the memory. | Replace the toner cartridge for the color indicated on the LCD. See Related Information: Replace the Toner Cartridge. |
| Replace WT Box | It is time to replace the waste toner box. | Replace the waste toner box with a new one. See Related Information: Replace the Waste Toner Box. |
| Scan Unable | The document is too long for 2‑sided scanning. | Press Length: 5.8 to 14.0 in. (147.3 to 355.6 mm) Width: 4.1 in. to 8.5 in. (105 mm to 215.9 mm) |
| Scan Unable ## | The machine has a mechanical problem. |
|
| Self-Diagnostic | The temperature of the fuser unit does not rise to a specified temperature within the specified time. | Press and hold |
| The fuser unit is too hot. |
| Short paper | The length of the paper in the tray is too short for the machine to deliver it to the Face down output tray. | Open the back cover (Face up output tray) to let the printed page exit onto the Face up output tray. Remove the printed pages, and then press Retry. |
| Size Error | The paper size defined in the printer driver is not supported by the defined tray. | Choose a paper size supported by the defined tray. |
| Size Error 2-sided | The paper size specified in the machine's paper size setting is not available for automatic 2-sided printing. | Press Load the correct size of paper in the tray and set the tray for that paper size. Choose a paper size supported by 2-sided printing. Paper sizes available for automatic 2-sided printing are Letter, Legal, Mexico Legal, India Legal and Folio. |
| The paper in the tray is not the correct size and is not available for automatic 2-sided printing. |
| Size Mismatch | The paper in the tray is not the correct size. | Load the correct size of paper in the tray and set the size of paper for the tray. |
| Supplies Belt End Soon | The belt unit is near the end of its life. | Order a new belt unit before the LCD displays Replace Belt. |
| Supplies Replace Belt | It is time to replace the belt unit. | Replace the belt unit with a new one. See Related Information: Replace the Belt Unit. |
| Supplies Toner Low: X (X indicates the toner cartridge or drum unit color that is near the end of its life. BK=Black, C=Cyan, M=Magenta, Y=Yellow.) | If the LCD displays this message, you can still print. The toner cartridge is near the end of its life. | Order a new toner cartridge before the LCD displays Replace Toner. |
| Supplies WT Box End Soon | The waste toner box is almost full. | Order a new waste toner box before the LCD displays Replace WT Box. |
| Toner Error | One or more toner cartridges are not installed or not installed correctly. | Pull out the drum units. Remove all of the toner cartridges, and then put them back into the drum units. |
| Touchscreen Initialization Failed | The touchscreen was pressed before the power on initialization was completed. | Make sure nothing is touching the touchscreen. |
| Debris may be stuck between the lower part of the touchscreen and its frame. | Insert a piece of stiff paper between the lower part of the touchscreen and its frame and slide it back and forth to push out any debris. |
| Unusable Device | A USB device or USB flash drive that is encrypted or not supported has been connected to the USB direct interface. | Unplug the device from the USB direct interface. |
| Unusable Device Remove the Device. Turn the power off and back on again. | A defective USB device or a high power consumption USB device has been connected to the USB direct interface. |
|
| Wrong Paper Size MP Wrong Paper Size T1 | The specified tray ran out of paper during copying and the machine could not feed the same size paper from the next priority tray. | Refill the paper in the paper tray. |
