Janome Quilt Maker Pro 20 User Manual page 70

User Manual
Tension is Poor
Lint caught under the tension spring in
the bobbin
Hand Wheel Won't Rotate
Thread is entangled and caught in the
hook
There is a thread lock.
Thread Nests Under Quilt
Improper threading
Not enough tension on top thread
Thread Backlash
Bobbin thread tangles within the bobbin
case, tangles and winds onto the hook
spindle, or occasionally forms loops on
the bottom of the quilt
Hard to Guide Machine
Carriage wheels not centered
on track
Thread caught in wheels
Motor Fails to Run
On/Off switch turned off
70
QUILT MAKER PRO 20
Corrective Measure(s)
• If using short staple threads, inexpensive, or industrial threads, or
coated threads, lint and other material will build up under the tension
spring and begin to lift the spring, reducing the spring's ability to
compress against the thread. Insert a pin or the corner of a business
card under the spring and clear out the lint. The bobbin tension will
return fairly close to its preset tension. Test the tension before quilting.
Corrective Measure(s)
• There may be a thread lock. With the machine on, use the on-screen
hand wheel to break the thread lock. Quickly move your finger down
and up several times. If this doesn't solve the problem, turn the
machine off and use the hand wheel at the back of the machine to
resolve the thread lock.
• Carefully rock or turn the hand wheel in direction of motion and then the
other direction until the thread lock breaks free. Once the hand wheel
can be turned freely, remove the thread from the hook and basket. Now
re-oil the hook and make sure the hand wheel turns freely without the
hook hitting the needle. It is possible for a thread lock to cause a timing
problem.
Corrective Measure(s)
• Refer to threading diagram and threading instructions.
• Check that the machine is threaded correctly. Make certain that the
thread is flossed snugly in place between the two tension discs. If
the machine is threaded correctly, tighten top tension by rotating the
tension knob clockwise. (For more information about adjusting tension,
see Bobbin and Bobbin Tension and Easy-Touch Tension™ in the Using
Your Machine section of this manual.)
Corrective Measure(s)
• Make sure the bobbin is in the bobbin case correctly and the thread is
coming out from under the tension spring. The bobbin should rotate
clockwise when the thread is pulled.
Corrective Measure(s)
• Center the carriage wheels on top of the continuous track. Check that
the machine carriage has not jumped the track.
• Remove all thread or debris in wheels. Check that the tracks are free of
lint and threads
Corrective Measure(s)
• Make sure that both power switches are turned on. First turn on the
rear power switch (to the 1 position); then turn on the power button on
the front-left side of the machine.
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