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What is to be tested
What to adjust
Normal condition
Print A-4200
Switch mains supply off
Print S-4200
- Connect up the 4200 supply unit to the
....
sewing light, main motor, connecting
cable to print S-1230 (4-pole green,
control signals), the connecting cable
to print S-1230 (5-pole red, supply).
-
Switch-on supply unit.
- Check display panel
-
Bar graphs can be adjusted. For each
button depressed, the associated LED
illuminates.
- Start service programme (page 17).
-
Step motors rotate back and forth.
Select service test programme 6.
Check LEDs SL and SB flash at the
same frequency as stepping motor
motion.
- Motor switch <on>
- Motor runs
Important:
Directive: If the above tests all function
Print S-1230 must be replaced, and the test repeated if the display panel is not
with the mains device, then the fault can
illuminated, or if step motors do not rotate. Replace print A-1 230 if faults occur on
only be in the L-print. See test A.
the display panel.
-
If the motor doesn't run, exchange the motor.
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