Brother 431C Sewing Machine User Manual


 
8. ELECTRIC MECHANISM
--. Contact failure
The connectors functions are divided into five categories. Some connectors may belong to more than one
group. Be sure to investigate another category if a problem is not found in one category.
For the details of connections, refer to the control circuit block diagram at the end of this manual.
1. Feed mechanism
Problem Connector No. and position
• The feed mechanism operates but the home position is not
detected correctly.
• Error E-A0 is displayed. ([E.A1] KE-436B, 436C)
• The work clamp does not operate.
• Error E-61 is displayed. (solenoid specification only)
*
Not used with pneumatic specifications.
• Forward feed does not operate correctly.
• Error E-A0 is displayed. ([E.A1] KE-436B, 436C)
• Sideways feed does not operate correctly.
• Error E-A0 is displayed. ([E.A1] KE-436B, 436C)
3654
Q
3655
Q
3656
Q
2. Work clamp lifter and thread trimmer mechanisms
Problem Connector No. and position
• The work clamp does not operate.
• The machine does not operate.
• The work clamp does not operate.
• Error E-61 is displayed. (solenoid specification only)
• Thread trimming is not performed.
*
Not used with pneumatic specifications.
• Thread take-up lever does not operate.
3659Q
3658Q
3657Q
KE-430B, 430C series
143