Brother Printer 4F Error
What it means
'Unable to Print 4F' is a printhead-related error on Brother inkjet machines (DCP, MFC, and similar models). It generally points to an electrical or temperature fault at the printhead — the head drive voltage dropped abnormally fast — but it can also be triggered by a foreign object or torn paper stuck in the machine jamming the carriage. Typical symptoms: the machine will not print, the carriage may be stuck or unable to move, and the display shows 'Unable to Print 4F'.
Common causes of the 4F error
- A foreign object such as a paper clip or a ripped piece of paper jammed inside the machine
- An electrical or over-temperature fault in the printhead (abnormal drive-voltage drop)
- A failed or shorted carriage ribbon cable feeding the printhead
- A dirty encoder strip or a seized purge/pump unit blocking carriage movement
- A saturated ink absorber (waste ink pad) at end of life
- A rare firmware glitch
How to fix the Brother Printer 4F error
- 1Clear the error temporarily and inspectPress Stop/Exit to clear the message. Safety first: power off and unplug the machine before reaching inside so the carriage cannot move and injure your hand. Open the scanner cover and check the corners and center, then look under the print head and inside the rear Jam Clear Cover for any paper scraps or foreign objects, and remove anything you find.
- 2Do a one-minute power resetUnplug the machine from the power outlet and leave it unplugged for one full minute so the printhead and electronics reset. Plug it back in and let it initialize. This is the fix Brother recommends and it resolves many 4F errors.
- 3Print a test page to verifyIf '4F' is gone after the reset, print a quality-check / test page to confirm the machine is working normally before returning it to regular use.
- 4Try a deeper cleanup if it returnsWith the machine unplugged, gently clean the encoder strip and purge area, reseat the cartridges and the print head ribbon connections, and make sure nothing obstructs the carriage. Then power on and test again via a direct USB connection to rule out network issues.
- 5Apply the latest firmwareDownload and install the newest firmware for your exact Brother model from the official Brother support site, since a rare firmware bug can produce a 4F. Test again after updating.
🧰 When to call a professional
Brother's guidance is direct: if 'Unable to Print 4F' returns after you remove any obstruction and do a one-minute power reset, the machine requires service. This usually means a failed printhead, carriage ribbon, or purge unit. If you have a fax model, transfer any stored faxes out of memory before sending it in, then contact Brother support or an authorized service center.
Brother 4F error — FAQ
What does 'Unable to Print 4F' mean on a Brother printer?
It is a printhead error indicating an electrical or temperature fault at the print head, though it can also be caused by paper or a foreign object jamming the carriage inside the machine.
How do I fix the Brother 4F error myself?
Unplug the machine and remove any stuck paper or foreign objects, then do a one-minute power reset (unplug for a full minute, then plug back in). Print a test page to confirm. If 4F returns, the machine needs service.
Does the 4F error mean my Brother printer is dead?
Not necessarily. If it was caused by a jam, clearing it and resetting fixes it. But if it persists after a reset, it usually means a hardware failure (printhead or carriage) that requires professional repair, which may not be cost-effective on lower-priced models.
Sources
This guide is independently written and not affiliated with Brother. Always unplug appliances before servicing and follow your model's manual. Error codes and steps can vary by model — when in doubt, consult a qualified technician.