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TROUBLESHOOTING
If the machine stops operating correctly, check the following possible problems before requesting service.
You can solve most problems by yourself. If you need additional help, the Brother Support website offers
the latest FAQs and troubleshooting tips. Visit us at " https://s.brother/cpdab/ ".
If the problem persists, contact your authorized Brother dealer or the nearest Brother authorized service
center.
Frequent Troubleshooting Topics
Detailed causes and remedies for common troubleshooting topics are described below. Be sure to refer to
this before contacting your authorized Brother dealer.
■ Upper Thread Is Too Tight
■ Tangled Thread on Wrong Side of Fabric
■ Incorrect Thread Tension
■ Fabric Is Caught in the Machine and Cannot be
Removed
■ If the Thread Becomes Tangled Under the Bobbin
Winder Seat
Upper Thread Is Too Tight
■ Symptom
*
The upper thread appears as a single continuous
line.
*
The lower thread is visible from the upper side of the
fabric. (Refer to the illustration below.)
*
The upper thread has tightened up, and comes out
when pulled.
*
The upper thread has tightened up, and wrinkles
appear in the fabric.
*
The upper thread tension is tight, and the results do
not change even after the thread tension is adjusted.
a Lower side of fabric
b Lower thread visible from upper side of fabric
c Upper thread
d Upper side of fabric
e Lower thread
page 181
page 182
page 183
page 184
page 185
■ Cause
Incorrect lower threading
If the lower thread is incorrectly threaded, instead of
the appropriate tension being applied to the lower
thread, it is pulled through the fabric when the
upper thread is pulled up. For this reason, the thread
is visible from the upper side of the fabric.
■ Remedy
Correctly install the lower thread. (page 44)
TROUBLESHOOTING
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