PR-620/620C/600II/600IIC

FAQs & Troubleshooting

FAQs & Troubleshooting
  • Date: 01/11/2007
  • ID: faqh00000329_000

"Check if thread is broken." message appearing on the LCD.


  1. The upper thread was cut or the thread came out the thread tension disc or a thread guide.
    • The machine is not threaded correctly.
    • Check that the thread is under the upper and middle thread guide and correctly thread the upper thread.
  2. The bobbin thread was broken or ran out.
    • Check that there is thread on the bobbin and that approximately 50mm(2 inches) of thread has been pulled out, and then re-install the bobbin.

    3. If the start/stop button is pressed while the machine is not correctly set up or if an incorrect operation is performed, the machine stops and informs you of the error with a buzzer and an error message.

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If you need further assistance, please contact Brother customer service:

Related Models

PR-620/620C/600II/600IIC

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