Brother Unable to Scan XX: Scanner mechanical problem
Also shows as: Scan Unable XX, Scan Unable ##, Unable to Scan
Brother says "Unable to Scan" or "Scan Unable" means the machine has a mechanical problem.
What to try
- If your model has PC-Fax, transfer stored faxes to your PC before turning the machine off.
- Unplug the machine from the power outlet for several minutes.
- Plug it back in and try scanning again.
- On models with 2-sided scanning, the document may be too long: press Cancel and use a suitable paper size.
- If the problem continues, contact Brother Customer Service.
When it needs a technician
If the message continues after unplugging the machine, Brother says to contact Brother Customer Service.
Which models show Unable to Scan XX
Brother documents this code for models including MFC-J491DW, MFC-J497DW, MFC-J690DW, MFC-J895DW, MFC-J995DW, MFC-J6945DW, MFC-T4500DW, MFC-L8900CDW.
Varies by model: On color laser MFCs (for example MFC-L8900CDW) Brother adds that a document too long for 2-sided scanning can trigger "Scan Unable ##".
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 - Unable to Scan / Scan Unable (MFC-J995DW). Codes are model-specific, so your own model's manual is the final word. Reviewed October 2026.
Still showing Unable to Scan XX?
Tell our printer technician your model and what you've tried. You'll find out whether it's fixable at home or worth repairing at all.
Ask about my printer — $1Eric Paul Amora · Printer & Hardware Repair Technician