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Self diagnosis
1. Turn the power switch on while pressing the
auto-lock key and needle up/down key to
enter the factory setting mode.
2. Press the numeral key “1” to select the “Self
check” mode.
* The step 1 screen appears.
NOTE:
1. The power switch must be turned off when replacing parts.
2. The language on the LCD is English only.
Preparation:
1.Shift the bobbin winder stopper to the right.
2. Slide the drop feed lever to the left to raise the feed dog.
3. Slide the speed control slider to the left.
4. Raise the presser foot lifter and remove the presser foot.
5. Bring the needle bar at the highest position.
Before using the diagnosis device:
1. Check or replace the following part(s) if nothing happens when the power switch is turned on:
(1) The connectors are connected properly.
(2) Replace the circuit board A.
(3) Replace the power supply cord.
(4) Replace the switching power supply
2. When the Sewing light does not turn on:
(1) Replace the LED.
(2) Replace the printed circuit board A.
Auto-lock key
Needle up/down key
(Numeral key)
(Factory setting mode)
(Check LED LCD)
