Test Mode; Test Mode Start - JUKI LK-1900A Series Engineer's Manual

6. Test mode

When the test mode is started, it is possible to carry out maintenance and inspection.

(1) Test mode start

1. When the key is continuously pressed for 3 seconds in the state that the
sewing LED is turn off, the buzzer sounds and test mode start can be selected,
with the user level setting mode of the memory switch kept effective.
(Caution) The test mode cannot be selected unless the
for more than 3 seconds.
2. Change the memory switch No. with the
3. Press the key. The selected test mode is assumed and a display output
test can be started. In regard to the contents of the display output test, refer to
(2) Display output test.
4. Press the key. The display output test is finished and operation moves to
the selection of another test feature.
5. Select the test program No. by the use of the
Test program No.
6. Press the
7. For each program, the test program can be closed when the
The condition of 5. recovered.
However, the continuous operation mode cannot be canceled if it is once as-
sumed. To close this mode, it is necessary to turn off the power supply.
Test program
Input signal check
XY motor / origin sensor check
Continuous operation
Main motor rpm check
Output check
Presser foot and thread trimmer
motor and origin sensor check
Needle thread clamp motor and
origin sensor check
Software version display
key and define the test program number.
key is pressed
, keys to select the test mode.
, keys.
The conditions of switches and sensor inputs
are displayed at the LED.
Inching operation of the X/Y motor, operation
of origin retrieval, and the status of X/Y origin
sensors are displayed.
After the setting of continuous operational con-
ditions, the continuous operation mode is as-
sumed.
The sewing machine is started based on the
preset rpm, and the measured rpm number is
displayed.
Output is maintained for the LK1901A material
drawing magnet.
Inching operation of the presser foot and thread
trimmer motor, operation of origin retrieval,
and the status of presser origin and presser sen-
sors are displayed.
Inching operation of the needle thread clamp motor,
operation of origin retrieval, and the status of
needle thread clamp origin and needle thread
clamp sensors are displayed.
The software versions of the MAIN and SDC
boards are displayed.
key is pressed.
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Descriptions