Brother MFCL3720CDW Mfc-l3720cdw Wireless Digital Color All-in-one Printer With Laser Quality Output, Copy, Scan, Fax, Duplex, Mobile Includes 4 Month Refresh Subscription Trial ¹ Amazon Dash Replenishment Ready

User Manual - Page 465

For MFCL3720CDW.

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Home > Troubleshooting > Error and Maintenance Messages
Error and Maintenance Messages
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/faqs.
>> DCP-L3515CDW/DCP-L3520CDW/DCP-L3520CDWE/DCP-L3527CDW
>> DCP-L3555CDW/DCP-L3560CDW/MFC-L3740CDW/MFC-L3740CDWE/MFC-L3760CDW/MFC-L8340CDW/
MFC-L8390CDW
DCP-L3515CDW/DCP-L3520CDW/DCP-L3520CDWE/DCP-L3527CDW
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.
The 2-sided tray is not installed
completely.
Install the 2-sided tray firmly in the
machine.
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.
Press and hold down to turn
the machine off. Wait a few
seconds, and then turn it on again.
Perform the colour calibration
again using the LCD.
Install a new belt unit.
If the problem continues, contact
Brother customer service or your
local Brother dealer.
Cannot Detect
Your machine cannot detect the toner
cartridge.
Remove the toner cartridge and drum
unit assembly for the colour 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.
See Related Information: Replace the
Toner Cartridge.
Cannot Print ##
The machine has a mechanical
problem.
Press and hold to turn the
machine off, wait a few minutes,
and then turn it on again.
If the problem continues, contact
Brother customer service or your
local Brother dealer.
Cannot Scan ##
The machine has a mechanical
problem.
Press and hold to turn the
machine off, and then turn it on
again.
457
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