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18. Troubleshooting
Check that the display on the amplifier is as shown below at the beginning of sewing (there is no
thread on this side of the bobbin case).
(The figure given below indicates the state that channel 1 is used.)
❶ , ❶ '
Q1 Stitching failure is sometimes missed (Error is not notified even when a stitching failure
such as double catching, stitch skipping and/or thread breakage has occurred)
A. Check the following two items ① and ② in the written order.
Do you find any problem with respect to the error operation setting you have made on the opera-
①
tion panel?
→ Refer to "12. Setting the functions on the operation panel"
Carry out measurement with the solution viewer. Do you find any problem with respect to the
②
transit time and/or the difference in the quantity of light received?
→ Refer to "11. Solution viewer function"
Transit time,
Difference in the quantity of light received,
❷
❷
❸ ❸ ❹ ❹
❺ ❺
specification value =
120 μs or more
(milliseconds are all acceptable). If the transit time is smaller than
120 μs, the threshold should be increased.
* The threshold can be changed with the "+" and "-" while the solution viewer
mode is placed in ON.
5500 or more.
If it is smaller than 5500, carry out the procedure described in
Turning the sensor" p.14
If the difference in the quantity of light received is still smaller than 5500 even after
you have carried out tuning of the sensor, carry out the procedure described in
Adjusting the sensor position" p.11
The aforementioned specification values are the result of the test using FUJIX
Ltd. for Resilon #60 thread.
It is necessary to increase the specification value (to increase the transit time or
to increase the difference in the quantity of light received) in accordance with the
thread you use.
If you decrease the threshold, the detection sensitivity of the sensor will be in-
creased, thereby decreasing the frequency of missing the stitching failure. In this
case, however, frequency of false detection will increase.
p.18.
specification value =
again.
again.
– 38 –
❶ "1" OFF
❶ ' "1" Right side lights up
❷ "D" Lights up
❸ "DPC" Lights up
❹ "ST" Lights up
❺ "9999"
❺ If the display on the am-
*
plifier is about "9000", the
DPC function will work to
automatically correct the
value to "9999".
p.20.
"9.
"8.
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