MFC-790CW
FAQs & Troubleshooting |
How do I clear the message "Unable to..." or "... Unable" ?
If one of the following messages is displayed on the LCD, the machine may have a mechanical problem, a dirty encoder strip or a foreign object such as a clip or ripped paper inside the machine.
To solve the problem please follow the steps below:
If the following solutions do not solve the problem, your machine require repair. If your machine is out of warranty, please use this link to locate your nearest service centre: https://www.brother.co.uk/service-centre-locator.
A. Checking for debris or paper scraps
NOTE: The images shown below are from a representative product. Your model may look different from the picture.
DO NOT touch the encoder strip. The encoder strip is a clear plastic strip in front of the white vinyl band (surrounded in red shown in the picture below). If the encoder gets markings or debris on its surface, it may cause other problems.
- If the print head is on the right side, go to the steps of "If the print head is on the right side".
[If the print head is on the left side]
The ripped paper may be very small. Using a flashlight will help you to find the ripped paper.
Be careful not to trap your fingers under the scanner cover. Always use the finger holds provided on both sides of the scanner cover when opening and closing it.
If the error message continues, or if no debris was found, the encoder strip will need to be cleaned.
Go to step B to clean the encoder strip.
[If the print head is on the right side (The print head is hidden at the right corner)]
(The picture shown below is an example when the print head is hidden at the right corner.)
Make sure to disconnect the machine. The print head may move and injure your hand.
The ripped paper may be very small. Using a flashlight will help you to find the ripped paper.
Be careful not to trap your fingers under the scanner cover. Always use the finger holds provided on both sides of the scanner cover when opening and closing it.
If the error message continues, or if no debris was found, the encoder strip will need to be cleaned.
Go to step B to clean the encoder strip.
Markings and debris can adhere on the surface of the encoder strip from the reasons listed below
To solve this problem clean the encoder strip following the steps listed below:
DO NOT use flammable substances or any type of spray to clean the inside or outside of the machine.
Doing this may cause a fire or electrical shock.
If the problem still continues, your machine requires repair. If your machine is out of warranty, please use this link to locate your nearest service centre: https://www.brother.co.uk/service-centre-locator.