JUKI SC-921 Instruction Manual page 37

Discrete control box
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⑰ Foot lift function after thread trimming (Function setting No. 55)
This function can automatically lift the presser foot after thread trimming. This function is effective only
when it is used in combination with the AK device.
5 5
⑱ Reverse revolution to lift the needle after thread trimming (Function setting No. 56)
This function is used to make the sewing machine rotate in the reverse direction after thread trimming to
lift the needle bar almost to highest position. Use this function when the needle appears under the presser
foot and it is likely to make scratches on the sewing products of heavy-weight material or the like.
5 6
(Caution) The needle bar is raised, by rotating the machine in the reverse direction, almost to the high-
est dead point. This may result in slip-off of the needle thread. It is therefore necessary to adjust
the length of thread remaining after thread trimming properly.
⑲ Function of holding predetermined upper / lower position of the needle bar (Function setting No. 58)
When the needle bar is in the upper position or in the lower position, this function holds the needle bar by
applying a brake slightly.
5 8
⑳ Change-over function of AUTO / Pedal for sewing speed of the reverse feed stitching at the start
of sewing (Function setting No. 59)
This function selects whether the reverse feed stitching at the start of sewing is performed without a break at
the speed set by the function setting No. 8 or the stitching is performed at the speed by the pedal operation.
5 9
(Caution) 1. The max. sewing speed of the reverse feed stitching at the start of sewing is limited to
the speed set by the function setting No. 8 regardless of the pedal.
2. When "0" is selected, stitches of reverse feed stitching may not match those of normal
feed stitching.
 Function of stop immediately after the reverse feed stitching at the start of sewing (Function setting No. 60)
This function temporarily stops the sewing machine even when keeping depressing the front part of the pedal at the
time of completion of process of reverse feed stitching at the start of sewing.
It is used when sewing a short length by reverse feed stitching at the start of sewing.
6 0
0 : Not provided with the function of temporary stop of
the sewing machine immediately after the reverse
feed stitching at the start of sewing
1 : Provided with the function of temporary stop of the
sewing machine immediately after the reverse feed
stitching at the start of sewing
0 : off
Function of automatically lifting the presser foot is not provided.
1
(Presser foot does not automatically go up after thread trimming.)
1 : on
Function of automatically lifting the presser foot is provided.
(Presser foot automatically goes up after thread trimming.)
0 : off
Function of making the sewing machine rotate in the reverse direc-
0
tion to lift the needle after thread trimming is not provided.
1 : on
Function of making the sewing machine rotate in the reverse direc-
tion to lift the needle after thread trimming is provided.
0 : off
Not provided with the function of holding predetermined upper/low-
0
er position of the needle bar
1 : on
Provided with the function of holding predetermined upper/lower
position of the needle bar (holding force is weak.)
2 : on
Provided with the function of holding predetermined upper/lower
position of the needle bar (holding force is medium.)
3 : on
Provided with the function of holding predetermined upper/lower
position of the needle bar (holding force is strong.)
0 : Manual The speed is indicated by the pedal operation.
1
1 : Auto
Automatic stitching at the specified speed
0
– 35 –
Stop the sewing machine
temporarily to change
direction of sewing products.

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