vi
BH lever switch position ...................................................................................4 - 17
Needle and presser foot front/back position ....................................................4 - 18
Front/back and left/right position of feed dog ...................................................4 - 19
Feed dog height ...............................................................................................4 - 20
Inner rotary hook bracket position ...................................................................4 - 21
Inner rotary hook assy. (lower thread) tension ................................................4 - 22
5. Failure Investigation for Electronic Parts .........................................5 - 1
Error message list ..............................................................................................5 - 2
Error message is displayed ...............................................................................5 - 3
Power does not come on ...................................................................................5 - 7
Pulse motor does not return to initial position ....................................................5 - 8
Pattern cannot be selected ................................................................................5 - 9
Main motor does not rotate ..............................................................................5 - 10
Main motor rotation is not normal ....................................................................5 - 12
Pattern cannot be sewn correctly ....................................................................5 - 13
Button hole cannot be sewn correctly ..............................................................5 - 14
Operation button does not work .......................................................................5 - 15
Does not operate when the foot controller is used ..........................................5 - 16
Bobbin thread cannot be wound on the bobbin ...............................................5 - 17
LED lamp does not light ...................................................................................5 - 18
LCD is not normal ............................................................................................5 - 19
Buzzer does not sound ....................................................................................5 - 20
6. Special Instructions of Wiring ...........................................................6 - 1
Needle bar / Presser module wiring ................................................6 - 2
Power supply unit wiring .................................................................6 - 6
Front cover wiring ...........................................................................6 - 9
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