Trouble Shooting - Brother 884-T78 Operation Manual

Trouble Shooting

Before taking your sewing machine in for service, check the following chart. You can solve most problems by yourself. If you need additional help, the Brother
✽
Solutions Center offers the latest FAQs and troubleshooting tips. Visit us at " http://support.brother.com ".
Upper threading is not
Thread
threaded correctly.
Breakage
Re-thread machine
properly.
Bobbin thread is not passing
Bobbin Thread
correctly from bobbin case.
Reinsert bobbin
Breakage
properly.
Needle is not inserted
Skipped
correctly.
Stitches
Reinsert.
Fabric
Threading is incorrect.
Puckers
Re-thread machine.
Fabric Won't Feed
Stitch length is too short.
Properly or Irregular
Adjust stitch length.
Stitches
Upper threading is
Loop in
incorrect.
Re-thread machine
Seam
properly.
Needle is not attached
Needle
correctly.
Breakage
Reattach.
Sewing Machine
The power isn't on.
Doesn't Run
Turn the power on.
The area under the needle
Machine is
plate needs to be cleaned.
Clean feed dog and
Noisy
bobbin case.
Needle is not in the
Automatic Needle
highest position.
Threader Doesn't
Turn handwheel to
Work
raise needle.
Needle is not properly
Thread Cutter
inserted.
Doesn't Work
Reinsert. Set needle to highest
position in chamber.
26
Upper thread tension is
Thread is getting tangled.
too high.
Re-thread machine.
Reduce tension.
Clean bobbin case and under
15 14-16.25
needle plate. Oil the machine.
Thread is getting tangled. Bobbin tension is too high.
Re-thread machine.
Clean bobbin case and Reduce tension.
14
14-16.25
under needle plate.
Needle is bent, or tip is
Wrong needle.
dull.
See chart on p.17 to choose the
needle that best fits your Change needle.
11 17
fabric-thread combination.
Wrong needle for the fabric Upper thread tension is
and thread you are using. too high.
See chart on p.17 to choose the
Reduce tension.
needle that best fits your
14-16 17
fabric-thread combination.
Sewing heavyweight fabric with
Pressure of sewing foot is
feed dog in lightweight fabric
too weak.
position.
Increase foot pressure. Adjust feed dog.
8
9
Upper thread does not run Thread is not passing through
through the take-up spring. bobbin case correctly.
Pass thread through the
15 take-up spring correctly. 15
Wrong needle.
Change to correct needle.
11 11
The foot controller has
Machine's not plugged in.
come unplugged.
Check to make sure the
8 8
machine's plugged in.
Machine is out of oil.
Oil the machine.
25 25
Hook of needle threader doesn't
pass through eye of needle.
Wrong needle for the
thread you're using.
See chart on p.17.
8 17
Wrong needle. Needle is bent, or tip is dull.
See chart on p.17 to choose the
needle that best fits your
11 17
fabric-thread combination.
Improper fabric/needle/
thread combination.
See chart on p.17 for the right
needle to use with your
17
fabric and thread.
Bobbin case may be scratched.
Remove needle plate and
17 check bobbin case.
Area under needle
plate needs to be cleaned.
Clean feed dog and bobbin
11
case. Oil the machine.
Bobbin tension is too high.
Reduce tension.
17
Thread is getting tangled.
Re-thread machine. Clean needle
10
plate and bobbin case.
Improper fabric/needle/
thread combination.
See chart on p.17 for the right
Reset bobbin case. needle to use with your
14
fabric and thread.
Improper fabric/needle/
You're pushing or pulling
thread combination. the fabric.
See chart on p.17 for the right
Do not push or pull fabric.
needle to use with your
17
fabric and thread.
Machine is out of oil.
Clean and oil the
Reattach foot controller.
machine.
8
Using the automatic needle
threader incorrectly.
Check to make sure the hook isn't
bent. Needle may need to be raised Check the use of the auto-
to the highest position. matic needle threader.
Area under needle plate
needs to be cleaned.
Clean feed dog and
Change needle.
11
bobbin case.
Bobbin case may be scratched.
Remove needle plate and
17
check bobbin case.
Machine is not threaded
properly.
Re-thread machine.
25 14-16
You're sewing a lightweight fabric with
feed dog in heavyweight position.
Adjust feed dog.
17 10
14-16.25
17
The safety device has been
activated.
Contact your authorized
Brother dealer.
25
16
Upper threading is
incorrect.
Re-thread machine.
25 15