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DIAGNOSIS CHART
Note:
1. This diagnosis device is provided for the purpose of checking the circuit boards A and K and the
functions of this sewing machine.
2. The power switch must be turned off when replacing parts.
3. The language on the LCD is English only.
Preparation
1. Remove the machine base.
2. Remove the belt cover.
3. Shift the bobbin winder knob to the right.
4. Slide the drop feed lever to the left to raise the feed dog.
5. Slide the speed adjusting lever to the left.
6. Remove the presser foot and raise the presser bar lifter.
7. Set the needle bar at the highest position.
Before u
sing the diagnosis device,
Check or replace the following part(s) if nothing happens when the power switch is turned on:
1. the connectors are connected properly (refer to page 10).
2. replace the circuit board A or fuse on it (refer to page 7).
3. replace the power supply cord.
4. replace the machine socket.
5. replace the transformer.
When the sewing lamp does not turn on,
1. replace the sewing lamp.
2. replace the circuit
board A.
To activate the diagnosis device
1. While pressing the needle up/down and lock
stitch buttons, turn the power switch on. Then
press the stitch 01 button within 3 seconds.
2. The
Step 1 screen appears.
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