Brother PR-600 - Manual (Page 215)

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196
There are loops in
the upper thread.
The thread tension does not
correspond to the amount that
the thread tension knob was
tightened.
If the thread tension cannot be
adjusted, thread wax and dust
may have collected in the
subtension thread tension disc
at the front and back of the
thread tension knob, causing the
thread tension disc to rise. Clean
the thread tension disc.
The thread quality is poor.
Try sewing with different thread.
If the problem no longer occurs
after the thread is changed, the
thread quality is the problem.
Replace the thread with one of
good quality.
The machine is
noisy.
Lint may be wound in the hook. Clean the hook. p.183
The upper thread is not threaded
correctly. Check the thread path, and then
thread the upper thread again.
p.35
The hook is damaged.
Replace the hook.
Consult your nearest authorized
dealer.
Not enough oil was applied. Oil recommended parts. p.186
The needle
threader cannot
be used.
The needle is not at the correct
position.
Touch the key to move the
desired needle bar to be
threaded into embroidering
position.
p.40
Recommended needles are not
used on this machine.
Replace and use recommended
needle.
p.15, 61
The needle is not installed
correctly.
Correctly install the needle. p.15, 61
The hook on the automatic
needle-threading mechanism is
bent.
Consult your nearest authorized
dealer.
p.15, 61
The thread
tension is
incorrect.
The upper thread is not threaded
correctly.
Check the thread path, and then
thread the upper thread again.
p.35
The bobbin thread is not
correctly threaded.
Correctly thread the bobbin
thread.
p.19
The lower thread tension is
incorrect.
Adjust the tension of the bobbin
thread.
p.83
The upper thread
comes out of the
needle when
embroidering
begins.
If a short length of thread
remains after the thread is
trimmed, the needle may
become unthreaded when
embroidering begins again.
Set the remaining length of
thread to “LONG TAIL” on the
second page of the settings
screen.
p.150
The upper thread
does not reach the
bobbin thread
when
embroidering
begins.
There is no more thread in the
bobbin, the thread does not feed
from the bobbin, or the thread
that is fed from the bobbin is too
short.
Correctly thread the lower
thread.
p.19
Although the
thread is not
broken, a broken
thread error
occurs and the
machine stops.
If the thread breakage sensor in
the thread tension disc of the
thread tension knobs cannot
detect that the thread is being
fed, even if the machine is
running, a broken thread error
occurs and the machine is
stopped. If the thread came out
of the thread tension disc, even
though the thread is not broken,
the machine detects that the
thread is not being fed and stops.
Correctly pass the thread
through the thread tension disc.
If the broken thread error occurs
after the machine is rethreaded,
the sensor may be damaged.
Consult your nearest authorized
dealer.
p.37
Symptom Probable Cause Remedy Reference Page
Sapphire.book Page 196 Friday, August 1, 2003 9:12 AM