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12. Setting the functions on the operation panel
Disable
12-1. Messages on the operation panel
When you use this device (SD-29) with your sewing machine, the notification message will be displayed on
the built-in operation panel of the main body of sewing machine if the following phenomena occurs.
1. The notification message is displayed when enable/disable of "U220 Stitch skipping and
double catching detecting function" is set to "1: Enable".
2. Timing and the number of times of displaying the notification message are determined by
the conditions set as described in
3. If both the M640 and M641 errors described in the table below have occurred, the notification
message for the error which has been detected first will be displayed.
Phenomenon
Stitching failure "stitch skipping".
Stitching failure "needle thread break-
age".
Stitching failure "double catching".
The operation plate remains in its lower
position
Bobbin case is not loaded in the hook
Quantity of the sensor light has de-
creased (Note 2.)
Note 1. If the notification message is not normally displayed on the operation panel, firstly check the set value as
described in
"12-2. Set values of memory switches" p.21
solution viewer as described in
Note 2. This phenomenon occurs in the case the sensor light quantity displayed on the amplifier is not "9999" (in the
case
"10. DPC function" p.16
In this case, the bobbin case and/or the sensor head may be stained. Wipe stains such as oil and thread
wastes gathering on their surfaces with a piece of clean waste cloth.
Enable
Message displayed on the operation
M640
Stitch skipping is detected.
M641
Double catching is detected.
M642
Light quantity of the stitch skipping de-
tection sensor has decreased.
"11. Solution viewer function"
fails to work).
If you want to use the SD-29's detect-
ing function, set "S116 Stitch skipping
and double catching detecting func-
tion" to "Enable".
When you have changed the setting
of "U220 Stitch skipping and double
catching detecting function" from the
default value "1: Enable" to "0: Dis-
able", set "S116 Stitch skipping and
double catching detecting function"
to "1: Enable" and turn OFF the power
to the sewing machine.
"12-2. Set values of memory switches"
panel
In the case the set value is correct, check the
p.18.
– 20 –
p.21.
Display condition
In the case stitch skipping is detected in
repetition by the number of stitches set
with the U221 or more
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