Brother Unable to Print 4F: Print head problem
Also shows as: Print Unable 4F
In Brother's numbered error chart, code 4F means there is a problem with the print head.
What to try
- Unplug the machine and open the scanner cover.
- Look for paper scraps or foreign objects in the print head area and remove them without touching the encoder strip.
- Close the cover, plug the machine back in and see if the message clears.
- If it returns, contact Brother Customer Service.
When it needs a technician
Brother's chart says to contact Brother Customer Service for code 4F, since it points to the print head.
Which models show Unable to Print 4F
Brother documents this code for models including MFC-490CW, MFC-290C, MFC-5890CN, MFC-6490CW, MFC-790CW, MFC-990CW, DCP-385C, DCP-6690CW.
Varies by model: Brother's numbered code chart comes from inkjet models of roughly 2008-2010. On newer inkjets Brother treats the number as a variable ("Unable to Print XX") and gives the same general fix, so the exact meaning of a number can differ by model.
First steps for any printer error
- Write down the exact code before you do anything else — similar-looking codes often mean completely different things.
- Power the printer off, unplug it for a couple of minutes, then power it back on. A surprising number of transient errors clear here.
- Open the covers and check for paper scraps, packaging material, or anything blocking the carriage.
- Check the cartridges or tanks are genuine, correctly seated, and not empty.
- Confirm the printer is plugged directly into a wall outlet, not a power strip or extension lead.
- Check your model’s own manual — codes are model-specific, and the manual is the authority for your machine.
Source: Brother Support FAQ - The LCD displays an error code (number). What does it mean? (faq00000168_005). Codes are model-specific, so your own model's manual is the final word. Reviewed October 2026.
Still showing Unable to Print 4F?
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Ask about my printer — $1Eric Paul Amora · Printer & Hardware Repair Technician