Test Operation (Operating The Treadle) - Brother T-8422C Instruction Manual

3-5. Test operation (Operating the treadle)

Do not touch any of the moving parts or press any objects against the machine while sewing, as this may result in
personal injury or damage to the machine.
CAUTION
<Turning on the power>
2114M
Press the ON power switch (1).
The power indicator (2) will illuminate.
2182B
<Test operation>
2207B
1. Check that the machine sews at low speed when the
treadle (3) is gently pressed to position (B).
NOTE:
If the sewing machine does not operate even when the
treadle (3) is depressed, check the position of the safety
switch. (Refer to "13-1. Safety switch position".)
2. Then check that it sews at high speed when the treadle
(3) is gently pressed to position (C).
3. After pressing the treadle (3) forward, check that the
needle is lowered to the top of the needle plate when the
treadle (3) is returned to the neutral position (A). (when
needle down stopping has been set.)
4. If the treadle (3) is pressed to position (D), (thread
trimming is carried out for models with thread trimmer)
and the needle rises above the needle plate and stops.
5. With the machine head tilted back, depress the treadle (3)
and check that the sewing machine does not operate.
NOTE:
If the sewing machine operates when the treadle (3) is
depressed while the machine head is tilted back, the
safety switch is probably faulty. Contact the place of
purchase.
2117M
T-8421C, 8422C, 8452C, 8722C, 8752C
3. INSTALLATION
16