Diagnosis Chart (No.1) - Janome Memory Craft 3000 Service Manual

MEMORY CRAFT 3000 Diagnosis Chart
[CHECK OPERATION]
If nothing happens on the machine when turned on the power switch is, turn off the power
switch and do following:
1. Check all wire connections and recheck.
2. Replace the machine socket and recheck.
3. Replace Board A and recheck.
4. Replace Board D and recheck.
5. Replace the transformer unit and recheck.
If lamp bulb does not light when the power switch is turned on, turn off the power switch and do
following:
1. Replace the lamp bulb and recheck.
2. Replace Board A and recheck.
If LCD (LIQUID CRYSTAL DISPLAY) shows nothing when power switch is turned on,
1. Replace LCD unit and recheck.
2. Replace Board K and recheck.
3. Replace Board A and recheck.
NOTE: When checking operation the machine may suddenly start running. For your safety,
turn off the power switch when replacing any parts. Always recheck after replacing
defective parts.
[CHECK OPERATION 2] - Use diagnosis chart
Preparation:
1. Turn off the power switch.
2. Push the bobbin winder spindle to the left.
3. Detach the presser foot and raise the presser foot lever.
4. Raise needle bar all the way up.
5. Connect the foot controller.
NOTE: If a defect was found in step 01, do not proceed to further steps.
Turn off the power switch and do following:
1. Replace LCD unit and recheck.
2. Replace Board K and recheck.
3. Replace Board A and recheck.
If a defect is found in step 02, you can not proceed further.
Turn off the power switch and do following:
1. Replace Board F and recheck.
2. Replace Board K and recheck.
3. Replace Board A and recheck.
NOTE: During diagnosis, press the MEMORY key when the correct result is obtained and
press the CLEAR key if the result is incorrect to proceed to the next step.
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