Brother codes can differ by model. Choose the complete model and the exact displayed message before using a fix.
Documented Brother entries
2-sided Disabled
Close/reseat the rear cover or duplex tray.
Cannot Detect
Reseat the toner/drum assembly.
Cannot Print ##
Restart; persistent mechanical faults require service.
Cartridge Error
Reseat toner in its drum holder.
Cooling Down
Wait; keep ventilation clear.
Cover is Open
Close the indicated cover.
Drum !
Clean the corona wire.
Drum End Soon
Prepare a replacement drum.
Jam 2-sided
Clear the duplex-path jam.
Jam Inside
Clear the internal jam.
Jam Rear
Clear the rear-path jam.
Jam Tray 1
Clear the tray-one jam.
Manual Feed
Load the selected manual-feed slot.
Media Mismatch
Match job and tray media settings.
No Drum Unit
Reinstall the drum assembly.
No Paper
Reload paper and align guides.
No Toner
Reseat toner; replace if unresolved.
Out of Memory
Cancel/reduce the print job.
Replace Drum
Replace drum, then reset its counter.
Replace Toner
Install the correct new toner.
Toner Ended
Install the correct new toner.
Self-Diagnostic
Restart, wait fifteen minutes; service if persistent.
Size Error DX
Choose a supported duplex paper size.
Size Error
Correct the selected paper size.
Size Mismatch
Match loaded and selected paper sizes.
Toner Low
Continue if acceptable; prepare toner.
TS-01
Wireless is disabled.
TS-02
Access point not detected.
TS-03
Enterprise network details are incorrect.
TS-04
Authentication/encryption is unsupported.
TS-05
SSID or network key is incorrect.
TS-06
Security method or key does not match.
TS-07
A WPS-enabled access point was not detected.
TS-08
Multiple active WPS access points were detected.
Official sources
These links identify the source and its scope. Check the manufacturer page again before changing a printer setting or buying a part.
- Brother — Brother official driver/model support entry Checked 2026-11-01; official full page
Found a mismatch? Request a correction with the public source URL and exact model, without passwords or full serial numbers.