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(3) Knee switch
❶
(4) Hand switch
This switch is used as the start switch or the preset cancel switch.
(Refer to the aforementioned "Knee switch".)
(5) Workpiece detector switch
❶
(6) Preset adjusting knob
❷
❶
– 27 –
The height of the switch can be adjusted in the
three stages. (It has been factory-adjusted to the
middle stage at the time of delivery.) Loosen two
screws ❶ in the reverse side of the knee switch,
and fix the switch at a height where you can oper-
ate it with ease.
The switch is used as the start switch under the A
mode, and is used as the preset cancel switch un-
der the B mode.
Whether the knee switch or the hand switch is used
as the start switch can be selected with the memory
switch data
.
(For the setting procedure of the selection of the
start switch under A mode/B mode, refer to
1. Changing procedure of memory switch data"
p.110
.)
Be careful not to drop the knee switch
when removing the screw.
This switch prevents a malfunction when there is no
workpiece set on the machine.
If either one of two detector switches ❶ detects a
workpiece, the machine is actuated.
Take care not to place anything other than the sew-
ing products or hands on detector switches ❶ .
If using a piece of light absorbing black material, the
detector sensor may be inoperative. In this case,
the detecting function can be inoperative by select-
ing the memory switch No
(Refer to
"II-3-1. Changing procedure of memory
switch data"
p.110.)
Use this knob to adjust the seam allowance.
Insert preset adjusting knob ❶ which is supplied in
the tool box into the hole, and turn the knob to set
the seam allowance to the value indicated by scale
marker ❷ . (Refer to
"I-4-3. Adjusting the seam
allowance"
p.37.)
After the adjustment, return knob ❶ to the tool box
to prevent it from being lost.
"II-3-
.
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